n1as wrote in post #17755064
I love the look of the 300 f/2.8 but it is not in my budget. Period.
Will the 200 f/2.8L or 135L give a similar look provided you're closer to your subject?
The DoF calculator I checked said the depth of field was the same for these 3 configurations:
1. 300 f/2.8 at 30 yds
2. 200 f/2.8 at 20 yds
3. 135 f/2.8 at 13.5 yds.
Which suggests to me that all 3 lenses at f/2.8 with the subject the same size in the frame would give similar images (not exact of course).
Yes? No?
If you currently have lenses that have a variety of focal lengths (either primes or zooms), you can do the test yourself. You may need to be at f/4 or f/5.6 rather than f/2.8, but it will show you how the background varies depending on your focal length and distance from the subject. The biggest difference is the amount of background in the photo. A 100mm lens will show a much wider background than a 300mm lens. Because of that, the background of the wider lens just looks messier.
If you want the "look" of the 300 2.8, you might want to give the 300 f/4 a try. It will give exactly the same composition as the 300 2.8, and you lose just one stop of DOF.