Sigma 18-35mm F1.8 DC HSM Art
The Sigma 18-35mm F1.8 DC HSM Art is being billed as the "... first wide-angle to standard zoom lens to achieve a large aperture of 1.8. [... for APS-C sensors.]"
http://www.sigmaphoto.com/product/18-35mm-f18-dc-hsm-art
27-52.5mm FF equivalence on an APS-C body.
(From the link:)
SPECIFICATIONS
Lens Construction 17 Elements in 12 Groups
Angle of View (SD1) 76.5º-44.2º
Number of Diaphragm Blades 9
Mininum Aperture f16
Minimum Focusing Distance 8 cm/ 11.0 in
Filter Size (mm) 72mm
Maximum Magnifications 1:4.3
Dimensions
(Diameter x Length) 78mm x 121.0mm/3.1in. x 4.8in.
Weight 28.6oz
Corresponding Mounts
Sigma HSM DC
Nikon HSM DC
Canon HSM DC
HSM -Hyper-Sonic Motor
DC - DC for Digital
* The appearance, specifications, and the like of the product are subject to change for improvement without notice.
http://www.sigmaphoto.com/product/18-35mm-f18-dc-hsm-art
27-52.5mm FF equivalence on an APS-C body.
(From the link:)
SPECIFICATIONS
Lens Construction 17 Elements in 12 Groups
Angle of View (SD1) 76.5º-44.2º
Number of Diaphragm Blades 9
Mininum Aperture f16
Minimum Focusing Distance 8 cm/ 11.0 in
Filter Size (mm) 72mm
Maximum Magnifications 1:4.3
Dimensions
(Diameter x Length) 78mm x 121.0mm/3.1in. x 4.8in.
Weight 28.6oz
Corresponding Mounts
Sigma HSM DC
Nikon HSM DC
Canon HSM DC
HSM -Hyper-Sonic Motor
DC - DC for Digital
* The appearance, specifications, and the like of the product are subject to change for improvement without notice.
0
Comments
Moderator of the Cameras and Accessories forums
www.zblackwood.com
=Matt=
My SmugMug Portfolio • My Astro-Landscape Photo Blog • Dgrin Weddings Forum
I wished Sigma updated their beautiful 300 2.8 prime one day, so it would also perform with TC's.
― Edward Weston
Are you wishing it would perform better with TC's because it does perform with TC's.
For the 18-35 1.8 I am very interested in this lens. With the performance manufactures are getting out of cropped sensors, I am finding I get less and less interested in new full frame bodies and more with upcoming cropped bodies.
Sigmas 300mm prime falls apart with 2x TCs. Also the Sigma 120-300mm f/2.8 outperforms it's sister prime.
I would prefer a 24-70 2.8 on fullframe over a crop camera with a 18-35 f/1.8. Why?
Because I am shooting FF mostly for thin DOF, and f/1.8 on a crop body gives the same
DOF as a f/2.5 lens on fullframe. And while the f/1.8 lens allows for faster shutter speeds,
a FF camera allows for higher ISO, which nullifies the advantages of an f/1.8 zoom on a
crop camera for me.
― Edward Weston
... Which is an even thinner DOF for the Sigma 18-35mm F1.8 DC HSM, is it not?
(Actually, for a Canon crop 1.6x body I think that the f1.8 translates closer to f2.8 DOF on a FF body with equivalent AOV/FOV. I can check further on that tomorrow, if you wish.)
... Or it means the same shutter speed at a lower ISO, allowing a more similar noise signature.
Moderator of the Cameras and Accessories forums
I think they (Sigma) mean 28cm / 11", not 8 cm.
This looks interesting...
http://petapixel.com/2013/04/18/sigma-drops-bombshell-announces-a-18-35mm-f1-8-lens/#hX5sw99xCiuBBboB.99
edit: oops didn't realize that this was an old thread, my bad.
Hi Ziggy, all of what you said is correct and thus the lens makes great sense for crop shooters.
What I meant to say is, that on FF one gets the same effect with an f/2.8 lens and higher ISO.
Therefore it brings nothing new to the table (for me). The Sigma is a DC lens, meaning it can't
be used on FF without heavy vignetting, unfortunately.
― Edward Weston
http://lcap.tistory.com/entry/Sigma-ART-18-35mm-f18-Preview
http://www.facebook.com/home.php#/pages/Cr8ingWaves-Photography/119946782908?ref=ts
Definitely! A handful of us here at DGrin have had a chance to test the lens, and I believe that a few people now own it too. I've done a full review here, if you're interested:
http://www.slrlounge.com/sigma-18-35mm-f1-8-ex-dc-field-review
Bottom line, the lens is flawlessly sharp, and built like a Zeiss. It's incredible.
=Matt=
My SmugMug Portfolio • My Astro-Landscape Photo Blog • Dgrin Weddings Forum
Alicia
http://www.facebook.com/home.php#/pages/Cr8ingWaves-Photography/119946782908?ref=ts
Did you test in on the D700?
plenty of comparison pics and reviews here
http://photography-on-the.net/forum/showthread.php?t=1315965&highlight=sigma+18&page=16
(all Canon crop models )
Yes. Are you hoping that it offers some sort of extra focal range that can get you to a wider crop factor than 1.5x? In my experience, not really. If you're just recording timelapses at 1080p you might be able to squeeze a 24mm FOV or so out of it, but that would still require shooting at 18mm or 20mm and cropping in.
=Matt=
My SmugMug Portfolio • My Astro-Landscape Photo Blog • Dgrin Weddings Forum
I'm more hoping to have a more utilitarian lens that I can possibly use in the 24-35 mm range on FX without too much vignetting as well. I'm not looking for a wider range.
Yes, that's what I'm trying to say. You could achieve the EQUIVALENT of 24-35mm on full-frame, but you might have to do it by zooming the lens a little wider than 24mm and cropping in post. This won't be a problem on the likes of a D800 for still photography, but on something like a D700 it might be only worthwhile for lower-res stuff like timelapses.
Honestly though, I'm fully expecting Sigma to release a fast wide angle full-frame lens within the next ~6 months though. If you're already solidly in the full-frame camp and not interested in things like the crop mdoe on the D800, then I'd hold out.
=Matt=
My SmugMug Portfolio • My Astro-Landscape Photo Blog • Dgrin Weddings Forum