Originally posted by zdwagner What about using a fisheye and then correcting it in post? Does anyone here do this? I'm an idiot when it comes to knowing much about that particular thing, so does it, in the end, afford you a greater expanse of view after correction, or effectively the same? For instance, would a corrected 10mm fisheye shot give you more of a view than a 10mm rectilinear?
Originally posted by lytrytyr My other machine is under the weather right now with all of my images - needs a new graphics card. I did want to add a couple of items into the defishing discussion, that I came across from the school of hard knocks. For the most part, you shoot an image with a fisheye, then wind up defishing - usually things go all right. The key is to understand what the defishing process does - and the results that you wind up with. The fisheye lens is usually so wide that usually there is more than enough for cropping. That said, if your intent is to defish, then I would suggest that you shoot with an eye towards 1) framing and 2) perspective. I went searching for some examples and came across this....
Its not exactly using the 10-17, but that is not the point. The point is that when you shoot with a fisheye with the intent of defishing, you want to pretty much center the main object with sufficient framing so that when you defish you can crop accordingly. The Photozone example is excellent and is a wonderful illustration (in particular how defishing affects perspective). However, it was shot with a lot of boarder around it, so that it could be cropped. I once took a shot (one of my best ones) while out at sea. I needed the entire 10mm to capture what I wanted. Quite a while later I decided to see what it looked like defished. I did not like it, primary because I did not have enough boarder around the initial subject (since I needed edge to edge).
Also, scroll down to the bottom of the above link. Take a look at the guy's shoe. Objects out on the edge look just fine when shot. When defished, they sometimes do not look so fine. Defishing concentrates on getting the center looking "right", while expecting that the stuff out on the edges probably will be cropped off.
So, the bottom line is that when using a fisheye for an ultra-wide is wonderful. The lenses have a lot going for them, however they are a specialty lens. When you defish, you are going to loose a reasonable amount of that extra width - in terms of Angle of View.
Also, between the car and the interior shots. Curved surfaces are treated pretty kindly by the fisheye. Straight lines and "square" items - intersecting lines, right angles do suffer. The observers eye knows that the lines are straight and thus becomes very noticeable. Curved surfaces, tree branches, natural items with natural shapes are treated much more gently, because the eye can not predict what it should be seeing.