Going W I D E R with the 1D MKII

I've got the EF 17-40 f/4L but I want to go W I D E R with my (non EF-S) 1D MKII

As I see it there's not alot to choose:

EF 16-35 f/2.8L (ancient & expensive, got the 17-40 remember?)
EF 15 f/2.8L (fisheye)

Which excludes Canon, what about:

Sigma 12-24 f/4-5.6 (or Tamron/Tokina)

Are there anyone out there who has tested this combo, some samples would be great!!!?

16-35mm is not ancient by the way.. it's pretty new. It replaced an ancient lens ...

But,. wityh the 17-40mm.. it's not going to help you get wider really.

The widest EF lens is the 14mm prime,. I don't see that in your list.

Then there's the Sigma 12-24mm
I'm not sure the Tokina and Tamron are full frame?

Have it and love it... let me check my pbase account for some pics.

I have the sigma BTW and at least one of the tamaron/tokina is only good on 1.6, not sure about which one or if either will work on the 1.3...

Pixel peepers seem to take issue with the 12-24mm Sigma HSM near the edges, I'm not sure any lens would appear great being a zoom at 12mm, but the shot's I've seen look good enough. I'd give it a try if you can swing the price, looks to be a great lens to pair with a 24-xx zoom for travel if you ask me.

If I ever go FF one day the 17-40L and 12-24mm are the two lenses I have in mind as a replacements for my 10-22mm if needed. I find the range of the 12-24mm so much more appealing tough...

ok, here are a few shots:

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Yeah, I got my 12~24 when I had a 1.6 crop, and I still love it on my 1.3 crop. If I were to go FF again, I would have to see how sharp it is. I don't need a true 12mm lens so I could get away with a 16~35 or 17~40 just fine on FF if my 12~24 was not sharp on FF, but I love it on my old 10D and now the 1DmII...

Sigma 12-24 is the only current superwide that works with anything but 1.6 cameras. Sigma also makes a 15-30mm lens that gets good reviews as well, at 15mm on a 1.3 crop you'll get pretty much the same FOV as a 12mm lens on a 1.6 camera.

Thanx for sharing Jacobsen, care to share some camerasettings? AV? TV? ISO?

Looks like Sigma 12-24 is on my list now... Anyone tested the Sigma 14 EX f/2.8 on a 1.3x?

I have both the 15mm and the 16-35 and uses it on the 1dmk2. However I love the 16-35(being rectanlinear). Though the best is still the 16-35 on a full frame.

I honestly don't use much of the 15 fisheye. After correcting the fisheye to rectanlinear, you end up being in the range of a 22mm FOV.

erm...here's where I look like a noob - its not like other w/a lenses then?

I had heard that it was more on the order of a 12.5 mm lens, not considering the "crop" thing. I can't tell for certain, but I do know that if I de-fish my 15 mm fisheye, it still presents a considerably wider field of view than my 16-35.

Here's the 16-35 at 16, the de-fished fisheye, and the native fisheye on the 1D Mk II:

http://www.pbase.com …m/image/4126784​0/original

Shot w/ table:
Tv( Shutter Speed )
1.6
Av( Aperture Value )
16
ISO Speed
200
Shot with TV Cat and Couch:
Tv( Shutter Speed )
3.2
Av( Aperture Value )
16
ISO Speed
200

Both were on my tripod. You can see more in the first 2 galleries here:
http://www.pbase.com/b​enjacobsen/home_sweet_​home

a copy of text written in photo.net

"Using the above information we can calculate, for example, the field of view of a full frame fisheye lens designed for 35mm use when used on an APS-C camera. Lets take the example of a 15mm fisheye lens. Let's assume it uses equisolid angle projection, so the FOV is given by 4 * arcsin (frame size/(focal length * 4)).

For a 24 x36mm frame this gives a horizontal FOV of 147.5degrees, a vertical FOV of 94.3 degrees and a diagonal FOV of 185 degrees. Canon give numbers of 142, 92 and 180 for their 15/2.8 fisheye lens, so the mapping isn't exactly equisolid angle, but it's a typical full frame fisheye with approximately 180 degrees diagonal coverage

For a 22.7 x 15.1mm sensor (APS-C) the numbers become: Horizontal FOV = 88.9 degrees, Vertical FOV = 58.3 degrees, diagonal FOV = 108.1degrees. If you "defish" a fisheye image, i.e. convert the image to rectilinear mapping, you keep the horizontal and vertical FOV, stretch the edges of the image and reduce the diagonal FOV. So if you "defished" the image you'd get an image with approximately and 88 degree horizontal FOV and a 58 degree vertical FOV. This corresponds to the horizontal FOV of a 19mm lens and the vertical FOV of a 22mm lens. How is this possible? Well the 1:1.5 ratio of vertical to horizontal if the APS-C sensor is changed when the image is "defished" and becomes closer to 1:1.7"

http://www.photo.net/l​earn/fov/

mbze430 wrote:
For a 22.7 x 15.1mm sensor (APS-C) the numbers become: Horizontal FOV = 88.9 degrees, Vertical FOV = 58.3 degrees, diagonal FOV = 108.1degrees. If you "defish" a fisheye image, i.e. convert the image to rectilinear mapping, you keep the horizontal and vertical FOV, stretch the edges of the image and reduce the diagonal FOV. So if you "defished" the image you'd get an image with approximately and 88 degree horizontal FOV and a 58 degree vertical FOV. This corresponds to the horizontal FOV of a 19mm lens and the vertical FOV of a 22mm lens. How is this possible? Well the 1:1.5 ratio of vertical to horizontal if the APS-C sensor is changed when the image is "defished" and becomes closer to 1:1.7"

http://www.photo.net/l​earn/fov/

Good link. Note that in this paragraph, he's stating the FOV with the understanding that he's describing the effect on an APS-C sensor, which will result in a FOV approximately 1.6X smaller than full-frame. Therefore, the 22mm vertical statement should be compared to the equivalent field of view of other lenses when the "crop" factor (I hope that can of worms stays sealed) is considered. In the case of the 16-35, the FOV on a 1.6X camera is comparable to that of an approximately 26-56 mm lens on full-frame.

Ever thought about mounting the EF-S 10-22 onto your body? Possible by using a Cosina macro extender ring blabla (pfff, what's that in English...) .

See pics on www.fotodavid.nl/weblo​g and click on "Fotografenhumor" in the menu on the left. Text Dutch-only there, but you'll get the idea. Terrific way to go really wide....and to get a 10mm macro lens

David