p.1 #2 · What makes my Tokina 11-16 incompatible with a 5d?
It has a smaller image circle. It will physically mount to a 5D just fine, but you will get heavy vignetting. It's the same basic design as the Tokina 12-24, another lens designed for crop only cameras. However, some full frame users still use it as it stops vignetting at 17mm. Since the range is so short on the 11-16 don't expect it to be usable in any part of it's range.
If someone has tried it, you may want to chime in to prove my point, or say I'm wrong.
p.1 #3 · What makes my Tokina 11-16 incompatible with a 5d?
in theory lenses like this should fill stop vignetting at the equiv focal lenght of the crop camera eg 12-24 12*1.6 =19.2 so it should be ok from about 19 (or a bit less)
the 11-16 doesn't go long enough to do this so will probably vignett all the way or maybe could be used at the long end.
however it should fit the 5d ok as its an ef mount not an efs which would foul the mirror.
p.1 #7 · What makes my Tokina 11-16 incompatible with a 5d?
The "vignetting" is caused by the permanent lens hood. It's possible, though a royal pain to remove it, as it has to be cut off.
The image circle IS smaller than a 35mm sensor, but then a wide fisheye is supposed to be. On the Sigma 8mm, for example, the image is completely circular.
p.1 #8 · What makes my Tokina 11-16 incompatible with a 5d?
ericvgill wrote:
The "vignetting" is caused by the permanent lens hood. It's possible, though a royal pain to remove it, as it has to be cut off.
The image circle IS smaller than a 35mm sensor, but then a wide fisheye is supposed to be. On the Sigma 8mm, for example, the image is completely circular.
p.1 #9 · What makes my Tokina 11-16 incompatible with a 5d?
Just for an alternative for the 5d - the Sigma 12-24 does full frame ... and keeps straight lines straight, too. Fisheye is extreme barrel distortion. This lens has none. - actually I think it is the widest non fish FF lens made...
p.1 #10 · What makes my Tokina 11-16 incompatible with a 5d?
I just tried the 11-16 on my 1D3 last night(1.3 crop), and while it wasn't usable at 11mm, 12 and up seemed quite good. Great lens(I actually bought for my 30d).
p.1 #11 · What makes my Tokina 11-16 incompatible with a 5d?
Yes, I have the 'Tokie' 11-16 that I purchased originally to use on my 10D but it is usable @ 16mm on my 5D. The corners are a bit soft even stopped down but if you crop in just a little bit it is just as good on FF @ 16mm as it is on a crop @ 11mm. Basically I used it as an 11mm prime on a 1.6 crop and a 16mm prime on FF. If I had the $$, I would just get the the Canon 14mmL but the 'Tokie' serves my needs for the time being.
p.1 #14 · What makes my Tokina 11-16 incompatible with a 5d?
The 11-16 is a wonderful lens IMO, on a 1.6 crop body. The pic I did with the lens on my 1Ds did not look all that good, quality wise. On the 40d, the pics are great. To be honest though, I did not set images taken with both cameras side by side. I also noticed a similar thing when I tried the Tokina 12-24 on my 1DmkIIn.
I may be all wet here, and may be proven wrong, but that was the way it appeared to me by just glancing at the images.
I will say, the image produced at 14mm on the 40D with the 11-16 is about equal in quality as the 14L mkII, which I also have (for FF).
p.1 #16 · What makes my Tokina 11-16 incompatible with a 5d?
Yes, that is a good sharp and colorful image, but that seems to be a lot more distortion then I get with the 1.6 crop bodies. The lack of distortion is really a very good attribute of the 11-16, on a 1.6 crop.
p.1 #19 · What makes my Tokina 11-16 incompatible with a 5d?
I stand corrected, bad use of words, keystoning it is. Ok, can understand the keystoning it if you had a 45 degree on he camera, any wide will do it then.
