Canon EOS R Mirrorless Camera System with RF Mount Lens System

ziggy53ziggy53 Still learnin'still lovinPosts: 20,385Super Moderators moderator
edited September 5, 2018 in Cameras

(From: Canon USA Announcement page)
The EOS R system is built for imagemakers who demand high-performance capture, a full-frame sensor and excellent ergonomics. A 54mm diameter lens mount enables RF lenses to have large rear elements, while a mirrorless design brings them closer to the sensor for bright, sharp and compact lens designs. A 12 pin electronic connection delivers fast communication between the camera and the lens, facilitating a versatile and powerful system. Plus, with a variety of mount adapter options, it’s easy to incorporate your EOS R system into an EOS system and expand your creative opportunities.


30.3 MP Full-frame CMOS Sensor


DIGIC 8 Image Processor


The EOS R camera features a 35mm full-frame CMOS sensor with approx. 30.3 effective megapixels for stunning results with incredible detail and clarity, even in low-light situations. It’s powered by the DIGIC 8 Image Processor, which enables an expansive ISO range, enhances Image Stabilization and turbocharges operations across the board for outstanding image quality and impressive performance.

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  • ziggy53ziggy53 Still learnin'still lovin Posts: 20,385Super Moderators moderator
    edited September 5, 2018

    The Canon RF Lenses
    (From: Canon USA RF Lenses page)

    Designed to take advantage of everything the RF mount has to offer, RF lenses represent a new frontier in lens design for mirrorless cameras. With a large 54mm lens mount, large diameter elements to match and placement closer to the image plane, RF lenses provide brilliant image quality edge-to-edge with minimal light fallout, enabling new possibilities for enhanced optics and compact designs. A supercharged 12 pin communication system optimizes data transfer between camera and lens for sharp, stable and responsive performance in a wide variety of applications. Delivering features and performance engineered to astound, RF optics herald a new day in Canon’s legacy of optical brilliance.

    ziggy53
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  • ziggy53ziggy53 Still learnin'still lovin Posts: 20,385Super Moderators moderator

    RF 28–70mm F2 L USM


    The RF 28–70mm F2 L USM features a maximum aperture of f/2, offering unparalleled performance throughout its zoom range. With L series optics, it offers the flexibility and performance of a handful of fixed focal length lenses, delivering superlative performance from 28–70mm.

    Ziggy note: I'll be honest, this is the particular part of the Canon mirrorless system that peaks my interest, an f2 standard zoom lens. Compared to the initial "Z" offering from Nikon, the f4, 24-70mm, the Canon lens collects 4-times as much light. With the claimed AF sensitivity in low light in as little as EV-6 using f1.2 lenses, that might translate into an EV-5-ish sensitivity for f2 lenses, like the RF 28–70mm F2 L USM.

    ziggy53
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  • ziggy53ziggy53 Still learnin'still lovin Posts: 20,385Super Moderators moderator
    edited September 5, 2018

    Other Announcements:

    DPReview: Canon full-frame mirrorless system debuts with announcement of EOS R

    ... Canon has joined the full-frame mirrorless club with its new RF-mount system, with the first camera being the EOS R.

    The EOS R features a 30.3 effective Megapixel CMOS sensor and a DIGIC 8 processor. It uses RF-mount lenses - four of which will be available at launch - with support for both EF and EF-S lenses via one of three optional adapters. Dual Pixel AF is onboard, with a whopping 5,655 selectable points with 88% vertical and 100% horizontal coverage, plus the ability to focus down to -6EV.

    The camera has a native ISO range of 100-40,000 that expands to 50-102,400. The EOS R supports both Canon's 14-bit CRW Raw format as well as the relatively new C-Raw, which offers much smaller file sizes. The fastest shutter speed available is 1/8000 sec, with an X-sync speed of 1/200 sec. There's a 'Silent LV Shooting mode' that takes advantage of the camera's electronic shutter.

    Design-wise, the EOS R is an SLR-style camera with a weather-sealed magnesium alloy body. It offers an electronic viewfinder with a resolution of 3.69 million dots, a magnification of 0.76x and a 23mm eyepoint. Its fully articulating 3.2" LCD is touch-enabled and has 2.1 million dots. A customizable touchpad to the right of the viewfinder allows for quickly changing ISO, white balance, movie shooting and more. Canon users will be able to commiserate with Nikon owners as, like that company's new Z-series cameras, the EOS R offers just one memory card slot, which supports UHS-II media. The camera has HDMI, USB-C, wired remote, headphone and microphone sockets. Wi-Fi and Bluetooth are built-in.

    Performance-wise, the EOS R can shoot continuously at 8 fps in AF-S and 5 fps in AF-C 'shooting speed priority' mode. If you want to use 'tracking priority' mode in AF-C the frame rate drops to just 3 fps. The buffer is quite healthy, though, with the ability to save 47 Raw, 78 C-Raw or 100 JPEGs when shooting at full speed with a UHS-II card. It uses the familiar LP-E6N battery pack which allows for 370 shots per charge using the LCD (per CIPA standard) or 350 with the EVF. (Power save modes boost those numbers to 450 and 430, respectively.) The optional BG-E22 grip fills the battery slot but has room for two batteries: this gives you twice the battery life.

    The EOS R will be available in October for $2299 body only or $3399 with the 24-105mm F4L lens.


    Imaging Resource: Canon announces the new full-frame EOS R mirrorless camera

    Canon has announced their first full frame mirrorless camera, the EOS R. Canon has also announced several new lenses to go along with the launch, calling this the launch of a "system" rather than just the launch of a new camera. As such, Canon is launching the EOS R with three new RF-mount lenses: 24-70mm f/2 L, 35mm f/1.8 Macro STM, 50mm f/1.2 L and the 24-105mm f/4 L.

    Additionally, Canon has announced three different lens adapters (regular lens adapter, the addition of a control ring, and and adapter with drop-in filter functionality) to make the new EOS R compatible with all current EF lenses with, what Canon promises, no loss in performance but in some cases increases in performance.

    Some notes:

    30.3 megapixel full frame sensor. This is the same sensor as the 5D Mark IV, repurposed for this camera.
    DIGIC 8 Processor
    New RF lens mount
    Dual Pixel CMOS AF with 5,655 AF points (manually selectable)
    ISO range: 100 - 40,000 expandable to 50 - 102,400
    Offers Eye AF, but it only works in single shot mode and must refocus between shots.
    Up to 8fps continuous shooting rate; 5fps with Servo AF
    4K UHD video at up to 30fps at 480Mbps
    As is the case with the 5D Mark IV, 4K video has a 1.7x crop factor.
    Clean HDMI out for 4K 4:2:2 10-bit, internal 4:2:0 8-bit
    Canon LOG pre-installed
    HD video: 1080p60 & 720p120
    OLED EVF with 0.76x magnification
    Single SD card slot with UHS-II compatibility
    Uses LP-E6N battery pack (same as 5D Mark IV)
    CIPA-rated for 350 shots with EVF or 370 with LCD, higher in power saving modes
    Optional BG-E22 battery grip
    Flash sync speed 1/200 sec
    Three mount adapters for EF and EF-S lenses (excluding EF-M)
    When the camera is switched off, the shutter closes and shields the sensor from dust if/when you change lenses.
    The Canon EOS R will retail for $2299 body only, and $3399 with the 24-105mm f/4 kit.

    ziggy53
    Moderator of the Cameras and Accessories forums
  • ziggy53ziggy53 Still learnin'still lovin Posts: 20,385Super Moderators moderator
    edited September 5, 2018

    Videos:

    Discovering Canon’s New EOS R System

    Canon EOS R System: Introducing the EOS R Camera

    Lots of explanations here.

    Canon EOS R System: At the Heart of the EOS R System – Optics

    Canon EOS R System: Electronic Viewfinder and Autofocus

    Canon EOS R System: Video Controls and Operation

    ziggy53
    Moderator of the Cameras and Accessories forums
  • pathfinderpathfinder Drive By Digital Shooter western IndianaPosts: 14,351Super Moderators moderator
    edited September 5, 2018

    Lots to like, especially for owners of Canon glass. An EOS 100-400 f4.5-6.3 + 2X TC - will autofocus quite nicely apparently - that is really cool... The AF system works to f11 - think on that a minute

    The lack of IBIS may put a lot of folks off - that would really be an asset with low light AF capability and for hand held videography

    The build quality and weather sealing seem typical Canon which is pretty good with their pro level bodies and lenses

    One memory card slot will offend some

    Uses the same battery that the 5D Mk IV and the 7D MK II uses = that is nice, but does not offer near as many shots er battery with all that video display

    Does it allow the use of Canon radio controlled flash system, inquiring minds want to know??

    Apparently the R body is only the first of three or four new bodies with varying directions - one wonders if one will have IBIS and more card slots.

    In one of the videos, they said the R body, with the 50 1.2 lens, can aAutoFocus in light so minimal, that the exposure at f1.4, is 4 seconds - you can't see in light that dark

    Still wish it had IBIS

    Pathfinder - www.pathfinder.smugmug.com

    Moderator of the Technique Forum and Finishing School on Dgrin
  • ziggy53ziggy53 Still learnin'still lovin Posts: 20,385Super Moderators moderator
    edited September 5, 2018

    @pathfinder said:
    Lots to like, especially for owners of Canon glass. An EOS 100-400 f4.5-6.3 + 2X TC - will autofocus quite nicely apparently - that is really cool... The AF system works to f11 - think on that a minute

    I agree, that the AF specifications sound truly awesome. I'm pretty sure there will be more information coming about usage scenarios and caveats.

    @pathfinder said:
    The build quality and weather sealing seem typical Canon which is pretty good with their pro level bodies and lenses

    Rudy netioned similarities to the 5D Mark IV, and user reports of that camera's seals and weather resistance tend to be good.

    @pathfinder said:
    One memory card slot will offend some

    I probably would not recommend this Canon EOS R Mirrorless for wedding/event paying work, unless it was coupled with a second body to use as a backup, just in case. Luck favors those who are prepared.

    @pathfinder said:
    Uses the same battery that the 5D Mk IV and the 7D MK II uses = that is nice, but does not offer near as many shots er battery with all that video display

    Fortunately, Canon will offer a vertical grip which houses 2 - batteries to yield twice the number of shots, as well as a second shutter button with control wheel too. As long as it allows changing the batteries while your rig is attached to a tripod, it should be a popular option.

    @pathfinder said:
    Does it allow the use of Canon radio controlled flash system, inquiring minds want to know??

    Have not found either written or video information that is conclusive about the flash interface capabilities.

    @pathfinder said:
    In one of the videos, they said the R body, with the 50 1.2 lens, can aAutoFocus in light so minimal, that the exposure at f1.4, is 4 seconds - you can't see in light that dark

    Seeing-eye camera. I like it!

    @pathfinder said:
    Apparently the R body is only the first of three or four new bodies with varying directions - one wonders if one will have IBIS and more card slots.

    @pathfinder said:
    The lack of IBIS may put a lot of folks off - that would really be an asset with low light AF capability and for hand held videography

    @pathfinder said:
    Still wish it had IBIS

    I suspect that IBIS is coming for the "professional" body. This first body (Advanced Enthusiast/Prosumer) does have its own motion sensors to help with lens IS, so part of the system is already there!

    ziggy53
    Moderator of the Cameras and Accessories forums
  • pathfinderpathfinder Drive By Digital Shooter western IndianaPosts: 14,351Super Moderators moderator
    edited September 5, 2018

    "I suspect that IBIS is coming for the "professional" body. This first body (Advanced Enthusiast/Prosumer) does have its own motion sensors to help with lens IS, so part of the system is already there!"

    That is encouraging, I agree.

    I wonder how hard it would be for Canon to design a second memory card into the external battery grip - That way no increase in the size of the camera body, but those who want/need the safety of two cards, could have them. I wonder if there was any thought given to that.

    It is strange, SD cards really don't take that much room. Or they could have added a Micro- SD slot - they REALLY don't require much room. But if you drop one, you might inhale it.

    I looked for the diameter of the lens mount on the Nikon Z 7 but can't seem to turn it up very quickly - Is it smaller, larger or the same size as the 54 mm Canon R mount?

    Pathfinder - www.pathfinder.smugmug.com

    Moderator of the Technique Forum and Finishing School on Dgrin
  • ziggy53ziggy53 Still learnin'still lovin Posts: 20,385Super Moderators moderator
    edited September 6, 2018

    @pathfinder said:
    ...
    I wonder how hard it would be for Canon to design a second memory card into the external battery grip - That way no increase in the size of the camera body, but those who want/need the safety of two cards, could have them. I wonder if there was any thought given to that.

    It is strange, SD cards really don't take that much room. Or they could have added a Micro- SD slot - they REALLY don't require much room. But if you drop one, you might inhale it.

    I looked for the diameter of the lens mount on the Nikon Z 7 but can't seem to turn it up very quickly - Is it smaller, larger or the same size as the 54 mm Canon R mount?

    I don't think that anyone has used a tethered cable/cord to a remote card location, but I doubt that it's practical. Card writing and reading generally requires a metal compartment which is both shielded and grounded in order to prevent the high-frequencies from affecting other circuits in the camera. Indeed, with CF cards, if a grounding pin were damaged the card turns into a transmitter and can affect the subsequent file writing.

    With SD cards, they use contact strips for reading/writing. and if the plastic barriers between the contacts of the card are damaged the card can in turn damage the contact strips physically and/or cause a short-circuit which can damage the card electrically or even damage the read/write circuits in the camera.

    Either way, if you want to add a second card to a single card system you have to either:

    1) Add a second controller for the second card, and the controller would need to be specifically designed with an arbitration circuit to handle the needs of each card separately before turning control back to the image processor.

    ... or ...

    2) Add a special circuit which uses a single controller but 2 - write cycles per image, alternating between cards, before returning control back to the image processor. This retains a bit simpler mechanism, but at least doubles the time for writing.

    Again, you need to add this extra capability during the design of the camera. The electronics required can't be just slapped in there and expect it to work. Signal timings and file delivery are a very carefully orchestrated series of events.


    The Canon EF camera mount specifies 54mm inner diameter on the camera, and that dates back to 1987. Remember that Canon also had an EF 50mm, f1.0L USM in the past. 54mm seems not to be a limitation.

    From https://global.canon/en/c-museum/product/ef283.html

    EF50mm f/1.0L USM

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    Moderator of the Cameras and Accessories forums
  • pathfinderpathfinder Drive By Digital Shooter western IndianaPosts: 14,351Super Moderators moderator

    Great answer, Ziggy.

    Now what is the diameter of the new Nikon Z7 lens mount? Same as the Canon, or bigger or smaller?

    Pathfinder - www.pathfinder.smugmug.com

    Moderator of the Technique Forum and Finishing School on Dgrin
  • ziggy53ziggy53 Still learnin'still lovin Posts: 20,385Super Moderators moderator

    @pathfinder said:
    Great answer, Ziggy.

    Now what is the diameter of the new Nikon Z7 lens mount? Same as the Canon, or bigger or smaller?

    Rats, you already asked that and I forgot to include the Nikon "Z" mount diameter, 55mm, in my haste.

    To recap for the sake of comparison, the 30-year-old Canon "EF" mount diameter of 54mm is bested by the Nikon "Z" mount diameter of 55mm.

    ziggy53
    Moderator of the Cameras and Accessories forums
  • pathfinderpathfinder Drive By Digital Shooter western IndianaPosts: 14,351Super Moderators moderator

    OK I wondered which was larger, but 54mm matches the older EF mount and has been adequate for a long time I guess, and allows compatibility with the olde EF lenses.

    Thanks Ziggy

    Pathfinder - www.pathfinder.smugmug.com

    Moderator of the Technique Forum and Finishing School on Dgrin
  • ziggy53ziggy53 Still learnin'still lovin Posts: 20,385Super Moderators moderator
    edited September 7, 2018

    More Videos

    DPReview: Canon EOS R First Impressions with Chris & Rishi

    PhotoRec TV: Canon EOS R Mirrorless- Hands-on // Early Impressions

    Kai W: Canon EOS R Full Frame Mirrorless! Hands-on First Look

    Gordon Laing: Canon EOS R review first looks

    ProAV TV: Canon EOS R - Hands on Q & A

    ziggy53
    Moderator of the Cameras and Accessories forums
  • ziggy53ziggy53 Still learnin'still lovin Posts: 20,385Super Moderators moderator
    edited September 7, 2018

    @pathfinder said:
    Does it allow the use of Canon radio controlled flash system, inquiring minds want to know??

    OK, this looks encouraging. On the Canon page, "What's New : Control Ring on Canon RF Lenses", under the section "Using the Control Ring", about 80 percent down on the page, it states:

    E-TTL flash shooting
    Remember, the EOS R is fully compatible with Canon’s EX-series Speedlites, and E-TTL II flash. ...

    Since the Canon Speedlite 600EX-RT is an EX speedlite, and the Speedlite Transmitter ST-E3-RT is the supporting trigger for the radio wireless flash system, I am hopeful that the new Canon EOS R system cameras fully support both of the radio wireless flash system components. The hot-shoe atop the EOS R body also looks complete; another good sign.

    ziggy53
    Moderator of the Cameras and Accessories forums
  • ziggy53ziggy53 Still learnin'still lovin Posts: 20,385Super Moderators moderator
    edited September 7, 2018

    The EOS R System - White Paper is out and available, for viewing or download.

    Significantly, it includes both a background of the Canon EOS system and reasoning behind the new mirrorless FF "R" system. There are also MTF charts for the new lenses, as well as comparative MTFs of current comparable EOS "EF" lenses.

    ziggy53
    Moderator of the Cameras and Accessories forums
  • ziggy53ziggy53 Still learnin'still lovin Posts: 20,385Super Moderators moderator
    edited September 7, 2018

    Bryan Carnathan has set of links available, comparing existing Canon EF based product information/specifications against the new R products' information/specifications.

    Canon EOS R / RF Lenses Available in the Site's Specs Comparison Tools

    Here's an abbreviated example screen grab of one of the comparisons:

    ziggy53
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  • JusticeiroJusticeiro E clunibus tractum Posts: 1,167Registered Users Major grins

    If they are planning on doing more bodies that go in different directions, then it would be nice if they would let us know. I'm still using my 5d Mark II because, frankly, Canon hasn't offered me anything 3500 euros better than it is (the 5Ds almost, but not quite). So what I am waiting for is a mirrorles 5Ds mkii, or something. I'm not really content to wait another 4 years for it, either.

    Cave ab homine unius libri
  • ziggy53ziggy53 Still learnin'still lovin Posts: 20,385Super Moderators moderator

    @Justiceiro said:
    If they are planning on doing more bodies that go in different directions, then it would be nice if they would let us know. I'm still using my 5d Mark II because, frankly, Canon hasn't offered me anything 3500 euros better than it is (the 5Ds almost, but not quite). So what I am waiting for is a mirrorles 5Ds mkii, or something. I'm not really content to wait another 4 years for it, either.

    I still have my Canon 5D Mark II, but I admit that it's a backup body to the 5D Mark III, with its much improved autofocus. Still, the 5D Mark II has a sharper image out-of-camera than the 5D Mark III, due to a weaker AA/Low-pass filter. This makes the Mark II better for scenics, landscapes/cityscapes and architectural photography.

    ziggy53
    Moderator of the Cameras and Accessories forums
  • ziggy53ziggy53 Still learnin'still lovin Posts: 20,385Super Moderators moderator

    I added a couple of additional video reviews above to include:

    Gordon Laing: Canon EOS R review first looks
    Gordon is a professional who doesn't click-bait or embellish his videos. If you want a straightforward review with a professional's perspective, this is the video to watch. (I always seek his reviews personally.)

    ProAV TV: Canon EOS R - Hands on Q & A
    This review has more of a video-centric tilt, but very professional in presentation. More detail regarding the 3-different EF lens adapters and their usage.

    ziggy53
    Moderator of the Cameras and Accessories forums
  • ziggy53ziggy53 Still learnin'still lovin Posts: 20,385Super Moderators moderator

    Jared Polin posted some Canon EOS R RAW image files on his site, converted from CR3 to DNG so that they will open in many current RAW processing and editing applications.

    https://froknowsphoto.com/canon-eos-r-raw-files/

    ziggy53
    Moderator of the Cameras and Accessories forums
  • puzzledpaulpuzzledpaul low down bum Posts: 1,620Registered Users Major grins

    @pathfinder said:
    Lots to like, especially for owners of Canon glass. An EOS 100-400 f4.5-6.3 + 2X TC - will autofocus quite nicely apparently - that is really cool... The AF system works to f11 - think on that a minute

    Think you got a 'Friday' job there, Jim ... I'd return it and ask for a proper one - like mine :)

    pp

  • ziggy53ziggy53 Still learnin'still lovin Posts: 20,385Super Moderators moderator

    The Canon EOS R – Hits and Misses - Luminous Landscape

    ziggy53
    Moderator of the Cameras and Accessories forums
  • ziggy53ziggy53 Still learnin'still lovin Posts: 20,385Super Moderators moderator

    How Canon see the EOS R System - IBC 2018 - ProAV TV

    ziggy53
    Moderator of the Cameras and Accessories forums
  • ziggy53ziggy53 Still learnin'still lovin Posts: 20,385Super Moderators moderator

    This is someone committing to the Canon EOS R system as an addition to Canon 5D Mark IV bodies.

    Canon EOS R - Why We Switched - Full Video Review!

    ziggy53
    Moderator of the Cameras and Accessories forums
  • ziggy53ziggy53 Still learnin'still lovin Posts: 20,385Super Moderators moderator
    edited September 21, 2018

    This video is the most compelling evidence for the new Canon EOS "R" system yet.

    Canon EOS R: Putting It To The Test - Joel Grimes - Canon Explorers of Light

    ziggy53
    Moderator of the Cameras and Accessories forums
  • ziggy53ziggy53 Still learnin'still lovin Posts: 20,385Super Moderators moderator

    CANON EOS R REVIEW - I'm Switching - Peter McKinnon

    ziggy53
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  • pathfinderpathfinder Drive By Digital Shooter western IndianaPosts: 14,351Super Moderators moderator

    @puzzledpaul said:

    @pathfinder said:
    Lots to like, especially for owners of Canon glass. An EOS 100-400 f4.5-6.3 + 2X TC - will autofocus quite nicely apparently - that is really cool... The AF system works to f11 - think on that a minute

    Think you got a 'Friday' job there, Jim ... I'd return it and ask for a proper one - like mine :)

    pp

    Yeah, I see that the Canon 100-400 is f4.5 ->5.6 - I wrote that post as I was finishing my final packing for Greenland, so I was a bit distracted. If that's the only mistake I made, I think I did pretty good. :p

    Pathfinder - www.pathfinder.smugmug.com

    Moderator of the Technique Forum and Finishing School on Dgrin
  • puzzledpaulpuzzledpaul low down bum Posts: 1,620Registered Users Major grins

    @pathfinder said:
    Yeah, I see that the Canon 100-400 is f4.5 ->5.6 - I wrote that post as I was finishing my final packing for Greenland, so I was a bit distracted. If that's the only mistake I made, I think I did pretty good. :p

    I'd say better than 'pretty' is more accurate ... aren't the long Tamron / Sigma zooms 6.3 at the 'top' end?
    I think I was trying to head off some bright spark querying how one gets to AF @ f11 with a 2x @ 6.3

    pp

  • pathfinderpathfinder Drive By Digital Shooter western IndianaPosts: 14,351Super Moderators moderator

    If the Canon R body will AF quickly with the EOS 100-400 + a 2X TC, that is pretty amazing, and potentially a very useful trick. But the high frame rate and buffer may limit its real world usefulness. I am interested to see the next shoe drop. Maybe this winter, hopefully. I think of this camera kind of like the 10D, a first step.
    Yes, the Tamron 150-600 is f6.3 at the long end, and it will be interesting to see how it performs with a 2X TC also. We’ll have to wait for someone besides Canon for that information though.

    Pathfinder - www.pathfinder.smugmug.com

    Moderator of the Technique Forum and Finishing School on Dgrin
  • ziggy53ziggy53 Still learnin'still lovin Posts: 20,385Super Moderators moderator

    EOS R Documentary: Walking The Rift

    CanonUSA
    Published on Oct 2, 2018

    Join Cinematographer Hiro Matsuzaki as he documents his experience using Canon’s new EOS R system while venturing out on foot in Lake Natron, to capture the rift valley’s environmental beauty.

    ziggy53
    Moderator of the Cameras and Accessories forums
  • Brett1000Brett1000 Major grins https://www.flickr.com/photos/photoscw/Posts: 813Registered Users Major grins
    edited October 5, 2018

    @pathfinder said:
    If the Canon R body will AF quickly with the EOS 100-400 + a 2X TC, that is pretty amazing, and potentially a very useful trick. But the high frame rate and buffer may limit its real world usefulness. I am interested to see the next shoe drop. Maybe this winter, hopefully. I think of this camera kind of like the 10D, a first step.
    Yes, the Tamron 150-600 is f6.3 at the long end, and it will be interesting to see how it performs with a 2X TC also. We’ll have to wait for someone besides Canon for that information though.

    Canon lenses AF quickly with the Canon mirrorless M5 and M50, no reason why the EOS R won't be the same
    Sigma and Tamron lenses almost as good

    www.flickr.com/photos/mmirrorless

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