
Originally Posted by
DanK
It's hard to see at this resolution, but these look very sharp where the image is within the DOF.
Back in the day, I had f/1.4 lenses for my first two film DSLRs. However, I didn't get them for narrow DOF. I got them because in those days, the ASA rating of film limited low-light photography, and I wanted the fastest lens I could afford. I usually shot Tri-X, and my very distant recollection is that Tri-X was ASA 400 if developed as intended and up to 800 if you pushed it and didn't mind the effects. And, of course, there was no mixing and matching: the entire roll had to be processed for one speed, so unless you carried a changing bag and additional film--which I sometimes did--you were stuck with one speed.
In my current photography, I rarely need faster than f/4, which is helpful in terms of weight and cost. In the case of my OM-1, however, I bought an f/2.8 walk around lens, which offsets the greater DOF created by the smaller sensor.