Where would we be without you mate...that looks deep. Going back in to read ........................................................................................................................12 times
I know how to crop a shot down in PS but is that what they mean when they say...
" Great lens particularly when at a 1.6 crop factor "
ta gus
it's a magnified field of view, becuase the sensor in most dslrs is smaller than an actual 35mm negative.
on canon, the rebel, 10d, 20d all have a 1.6 "crop factor" the 1D Mark II has a 1.3x crop factor and the 1Ds Mark II has no crop factor, the sensor is the same size as a 35mm film negative.
on nikon, they are 1.5x crop factors.
on 4/3s systems like olympus, they are 2x.
so, on a nikon, a 50mm lens has an equivalent field of view to a 75mm lens on a 35mm film camera. it makes your lenses appear longer, but it also makes the wide end more challenging. that's why canon just came out with the 10-22mm, so when that lens is on a 20d, it's equiv to a traditional 16-35mm
I know how to crop a shot down in PS but is that what they mean when they say...
" Great lens particularly when at a 1.6 crop factor "
ta gus
The real significance of the crop factor is that a lens that is kind of soft in the corners of a 35mm negative, may be sharp in the corners of the smaller APS sized sensor of a 10D for instance.
I have an older Tamron 28-105 f2.8 mm lens for a Nikon AF mount from about 1980. It was never thought of very highly because it was soft in the corners in 35 mm, but with the smaller image circle of the APS sized sensor it is a pretty decent piece of glass.
You know how, when you zoom in, you narrow your field of view?
The smaller sensor in digital cameras has the same effect as zooming in.
Andy's jazzed about his full frame sensor, because it doesn't "zoom in". His wide angle lenses are as wide as they're supposed to be. Put the same wide angle lens on a camera with a smaller sensor, and it looks "zoomed in" - it doesn't shoot as wide a pic as it would on a camera with a larger sensor.
If I set myself a budget of €2,000 over two years to buy lens I can get:
Canon 100-400 L €2,000
...
For the €2,000 you can fly to the states spend a long weekend touring some place inexpensive like Boston (ask me about cheap places to stay and eat) and have Adorama ship the lens to you the first dat you are here. NOTE: All of my "regular" UPS shipments from Adorama have actually arrived next day.
Charles Richmond IT & Security Consultant
Operating System Design, Drivers, Software
Villa Del Rio II, Talamban, Pit-os, Cebu, Ph
You know how, when you zoom in, you narrow your field of view?
The smaller sensor in digital cameras has the same effect as zooming in.
Andy's jazzed about his full frame sensor, because it doesn't "zoom in". His wide angle lenses are as wide as they're supposed to be. Put the same wide angle lens on a camera with a smaller sensor, and it looks "zoomed in" - it doesn't shoot as wide a pic as it would on a camera with a larger sensor.
But it is a lot more complicated in some interesting ways. DoF is pretty much as it would be with the original stated as opposed to the factored focal length and diffraction distorton is marginally greater for lenses design for the crop factor like the EF-S lenses when they stop down, but there is one very positve aspect and that is that the image being used is from the sweet spot of the lens since the greater distortions on the edges and corners are cropped out. Still I would rather have a full frame image and do my own cropping.
Charles Richmond IT & Security Consultant
Operating System Design, Drivers, Software
Villa Del Rio II, Talamban, Pit-os, Cebu, Ph
'gus i know your short attention span...
just know that when you buy your dslr, you'll need to think about a really wide lens... like the 10-22 efs ($725 usd) on the canon system (20d or rebel only) or 16-35L ($1100 usd), any canon dslr... nikon has similar lenses and prices. olympus even makes a zuiko 11mm i think now, too. what these lenses will do is give you the wide you are used to on your oly, if not even a bit wider (much wider if you have the 10-22mm from canon say...). again, the crop factor has the effect of making your lenses "more tele" if you catch my drift.
you won't have any issues with "crop factor" on the tele end of things, in fact your teles you buy will actually seem to be a bit longer
With the crop factor, does the image you see in the viewfinder the exact image of what the picture will look like in terms of cropping? If that didn't make sense, say you are taking a picture of a square and the edges of the square fit perfectly in the frame of the viewfinder. Will the picture be the exact same as what you see in the viewfinder, or will it be cropped a bit?
With the crop factor, does the image you see in the viewfinder the exact image of what the picture will look like in terms of cropping? If that didn't make sense, say you are taking a picture of a square and the edges of the square fit perfectly in the frame of the viewfinder. Will the picture be the exact same as what you see in the viewfinder, or will it be cropped a bit?
Depends on the camera, but I don't the crop factor has anything to do with it. Different cameras show you different percentages of the actual image, in the viewfinder. The more you pay for your camera, the more likely you are to see the full image in your viewfinder.
Comments
It has to do with the fact that an APS sized sensor is smaller than a 35mm film ( 24x36 mm) SLR's image size. A good explanation is here http://luminous-landscape.com/tutorials/understanding-series/dslr-mag.shtml
Moderator of the Technique Forum and Finishing School on Dgrin
it's a magnified field of view, becuase the sensor in most dslrs is smaller than an actual 35mm negative.
on canon, the rebel, 10d, 20d all have a 1.6 "crop factor" the 1D Mark II has a 1.3x crop factor and the 1Ds Mark II has no crop factor, the sensor is the same size as a 35mm film negative.
on nikon, they are 1.5x crop factors.
on 4/3s systems like olympus, they are 2x.
so, on a nikon, a 50mm lens has an equivalent field of view to a 75mm lens on a 35mm film camera. it makes your lenses appear longer, but it also makes the wide end more challenging. that's why canon just came out with the 10-22mm, so when that lens is on a 20d, it's equiv to a traditional 16-35mm
confused? don't worry too much about it.
Portfolio • Workshops • Facebook • Twitter
Might have to get a kava brew going :slosh i need to hear that tree fall in the forest.
The real significance of the crop factor is that a lens that is kind of soft in the corners of a 35mm negative, may be sharp in the corners of the smaller APS sized sensor of a 10D for instance.
I have an older Tamron 28-105 f2.8 mm lens for a Nikon AF mount from about 1980. It was never thought of very highly because it was soft in the corners in 35 mm, but with the smaller image circle of the APS sized sensor it is a pretty decent piece of glass.
Moderator of the Technique Forum and Finishing School on Dgrin
Canon 100-400 L €2,000
Canon 24-70 L €1,600
Canon 16-35 L €1,800
Canon 17-40 + Canon 70-200 F4 €1,900
Canon 17-40 + Sigma 70-200 F2.8 + 2x extender € 2,100
Sigma 70-200 2.8 + Sigma 17-35 2.8 +
Sigma 24-70 2.8 + 2x extender €2,000
Sigma 50-500 + Canon 17-40 €2,000
Sigma 50-500 +
(Sigma 17-35 or Sigma 24-70) €1,730
Motorbike holiday to Norway, 3 weeks, go to Artic cirle
see midnight sun & take loads of "postcard" photos of fjords,
loads of beer
Guess which option I'm going to pick
The smaller sensor in digital cameras has the same effect as zooming in.
Andy's jazzed about his full frame sensor, because it doesn't "zoom in". His wide angle lenses are as wide as they're supposed to be. Put the same wide angle lens on a camera with a smaller sensor, and it looks "zoomed in" - it doesn't shoot as wide a pic as it would on a camera with a larger sensor.
Catapultam habeo. Nisi pecuniam omnem mihi dabis, ad caput tuum saxum immane mittam
http://www.mcneel.com/users/jb/foghorn/ill_shut_up.au
Operating System Design, Drivers, Software
Villa Del Rio II, Talamban, Pit-os, Cebu, Ph
Operating System Design, Drivers, Software
Villa Del Rio II, Talamban, Pit-os, Cebu, Ph
just know that when you buy your dslr, you'll need to think about a really wide lens... like the 10-22 efs ($725 usd) on the canon system (20d or rebel only) or 16-35L ($1100 usd), any canon dslr... nikon has similar lenses and prices. olympus even makes a zuiko 11mm i think now, too. what these lenses will do is give you the wide you are used to on your oly, if not even a bit wider (much wider if you have the 10-22mm from canon say...). again, the crop factor has the effect of making your lenses "more tele" if you catch my drift.
you won't have any issues with "crop factor" on the tele end of things, in fact your teles you buy will actually seem to be a bit longer
Portfolio • Workshops • Facebook • Twitter
http://redbull.smugmug.com
"Money can't buy happiness...But it can buy expensive posessions that make other people envious, and that feels just as good.":D
Canon 20D, Canon 50 1.8 II, Canon 70-200 f/4L, Canon 17-40 f/4 L, Canon 100mm 2.8 Macro, Canon 430ex.
Catapultam habeo. Nisi pecuniam omnem mihi dabis, ad caput tuum saxum immane mittam
http://www.mcneel.com/users/jb/foghorn/ill_shut_up.au
http://redbull.smugmug.com
"Money can't buy happiness...But it can buy expensive posessions that make other people envious, and that feels just as good.":D
Canon 20D, Canon 50 1.8 II, Canon 70-200 f/4L, Canon 17-40 f/4 L, Canon 100mm 2.8 Macro, Canon 430ex.
Viewfinder
• Pentamirror
• 95% frame coverage
• Magnification: 0.88x (-1 diopter with 50 mm lens at infinity)
• Eyepoint: 20 mm
• Dioptric adjustment: -3.0 to +1.0 diopter
• Fixed laser matte screen
Catapultam habeo. Nisi pecuniam omnem mihi dabis, ad caput tuum saxum immane mittam
http://www.mcneel.com/users/jb/foghorn/ill_shut_up.au
there's a certain bloke from oz who's head might explode with all that info
Portfolio • Workshops • Facebook • Twitter