jacobsen1 Offline Upload & Sell: On
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gman1339 wrote:
jacobsen1 wrote:
this distortion could be a huge issue. For you guys saying it's an easy fix in post, yeah it is, but try doing that to every single image you shoot? Also, when you do that you loose a good bit of the width. The 14-24mm had distortion issues which is why I sold it and moved to the 16-35VR. I haven't tested anything myself yet, but I'm a bit scared right now seeing these other test shots. As mentioned, the sigma 12-24mm is pretty good distortion wise, I might have to switch back to that. Ugh.
You are confusing lens distortion with perspective. Barrel distortion correction does not cause a large loss of image width. You are thinking of perspective correction. You are going to have to perform perspective correction for all wide angle lenses when shooting close subjects (unless you are using a PC lens to adjust for the perspective corection).
no, I'm not confusing the two, I know both quite well in fact. Barrel distortion is when straight lines CURVE. Perspective is when they LEAN. I've owned every canon TS-E lens until the 17, 17-40s three times, a 16-35, 16-35II, three 12-24s (two canon one nikon), rented a 17-35, owned the 14-24mm, and now I have the 16-35mm. I know them all pretty well and I know for a fact the 14-24mm had BARREL distortion.
Straight lines at the edge of the frame taken with a camera that was level curve with a 14-24mm at 14mm. You have to go into the distortion adjustments in PS to fix this and you get little crescents taken out of the sides of all your images. Once you crop the image back to a rectangle you get a smaller images similar to what you would have gotten with a less wide lens.
Now if you don't, or can't level your camera, then yes, you'll ALSO see perspective distortion and yes, that does take even more out of the width of the lens. But that's an error in shooting, barrel distortion is an error with the design of the lens and you really can't do anything about it except find another lens or fix it in post. But if it's a big issue it means the lens won't be all that wide effectively once fixed in post.
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