Originally posted by Hambino Reason #938556523 why I love this forum: that helped out TREMENDOUSLY! Looking at the photos, focal length wise, there's a much bigger difference between 40 and 50 (much more than I was expecting) BUT there's a much smaller difference between the 35 (which I already have) and 40. I think this seals the deal for the DA 15!!! Thank you so much!!!
Here are some examples of the 50, 21 and the 40. The inside shots where I controlled the distance and aperture using all 3 lenses give you the best perspective.
These are not cropped, are heavily compressed and just snapshots so do not judge the lens quality by what you see here. The parking lot shot was from a seated parked position. The deck and kitchen shots are tripod fixed position shots.
Let's start with a distant parking lot shot using the 40 and the 21 from almost the same position:
Here is the 40 and the 21 from a fixed Tripod position where the focus point is at the same spot on the center tree. An approximate distance can be measured.
The best comparison is the kitchen shots. Fixed tripod, controlled aperture and 19' 6" from the camera to the mixing bowl. The Windex bottle, the focus point was a few inches less.
According to a member here, RioRico who I trust the 6MM between 21 and the 15 are significant and you would gain an even wider field of view. But make sure you can live with the bending and bowing of vertical lines at the edges of the photos.
Edit: The wife just walked in and saw the images of the dirty kitchen so if I turn up missing you will know why.