Canon FF lens choice
Posted 15 January 2005 - 02:05 AM
Ideally - and I realise this is not going to happen - I would like to see all the shots done at the same time, with housed cameras, on swimming pool tiles.
Posted 15 January 2005 - 02:33 PM
shot at 17mm, f4, 1/4s, iso 100, tripod mount, mirror lock up, cable release, JPEG.
Sounds like you did everything right I hope you didn't take my comments the wrong way. :oops: I'll join you in being underwhelmed by the performance of this lens. Lots of viginetting and blurry corners. I've never ytied this test but I hope the 12-24mm on a dx sensor looks better than that.
I agree with Alex. Would need to be done under the same conditions to be meaningful.
UWPhotoNewbie: Not such a newbie to diving and UW photography.
Nikon D70: 60 mm, 11-16mm, 105mm, 15mm, 10.5mm
Ikelite iTTL Housing, dual Ikelite DS125
Nikon D600 topside 14-24, 28-300, 70-200, 35,50,85
Posted 21 January 2005 - 05:12 PM
I'm posting in this thread with the results for the Sigma 12-24 HSM
I shot it on the 1DmkII today, which is a 1.25 crop camera. Sorry, but I don't have a FF canon to test it on.
Here is f4.5 (minimum f-stop) at 12mm:
Very little barrel distortion. Pretty good compared to the Canon.
Crops from lower corners:
Sharpness in the corners could be better, but is at least as good as the shots I've seen from Canon lenses.
Here's the same shots and crops at f8 @ 12mm:
Looks very good at f8
I like this lens because I can use it on any Canon body. It's big, but not much bigger than my Nikon 17-35 used to be. The front element sticks out FAR and it's quite round so I'm worried about flare and I will need to be more careful about using hoods, etc. Although I don't think it should be too much of a problem underwater with a dome and dome hood.
Anyhow, thought you all would like to see this. I'm keeping the lens.
Dual Ikelite Strobes
Photo site - www.reefpix.org
Posted 22 January 2005 - 12:37 AM
I've housed the lens with an appropriate extension ring matching the lens's optics. I hope AF performs well on the dome's virtual image which is close :-) I will know in two weeks.
I have experienced Corner performance on full frame is naturally poor wide open. But pretty acceptable stopped down taking into account the lens delivers rectilinear 122° FOV. Except the controversial Voigtländer 12mm 5.6 Heliar it's the only 35mm lens doing 122° (and the only SLR lens).
I see the lens as a decent performer on a cropped sensor. On full frame there are some natural drawbacks but on the other hand you get an incomparable Guinness FOV.
If considering an upgrade in the future beyond 1.6 crop the lens is a very nice, solid built and reasonably priced alternative solution to the Canon 10-22mm.
So When my 1Ds arrives (not tomorrow ) I can/will continue using this lens LOL
Posted 06 June 2012 - 05:58 PM
I've been thinking about this a lot myself, a doing due diligence. I think it is fair to say you buy Nikkors for the wideangles and Canon for the exotic tele-primes... Others will have their own opinions I'm sure.
I would use the new 100mm 2.8 IS L (Image Stabilized) version!
Edited by haring, 06 June 2012 - 05:59 PM.