Forum: Pentax SLR Lens Discussion
12-12-2010, 09:22 AM
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Interesting that you consider f/2.8 to be fast. I tend to think of fast as being below f/2. The new 35mm/2.4 was criticised by some for not being fast.
My feeling is that f/2.8 is very useful, and when going faster than f/2 you get diminishing returns. The depth of field gets so thin it is harder to focus. Obviously some people like and use it, and when you ask online you'll find such people, but it's less important now than it was five years ago.
For example, I recently bought the DA 35mm Ltd macro, and it didn't bother me at all it was only f/2.8. There are faster lenses around at or near that focal length, but the benefits of a DA Ltd outweigh the benefits of speed, in my opinion.
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