Hi,
I've recently picked up some manual primes to play with on my K200D, as newer AF versions are either too expensive or very hard to find.
I have a question regarding the aperture settings close to wide open. All of the lenses' aperture rings generally click at full & half stops, ie 4, 4.5, 5.6 etc, although there is only one full stop between the smallest & second-smallest, ie the 50mm goes straight from F16 to F22.
My questions is regarding the apertures close to wide open though: for example the 50mm is F1.7, then 2 clicks to 2.8. I am sort of assuming that it makes sense for the one in between to be F2, but it could just as easily be 2.4, as they are both on the way to 2.8. Similarly, the 28mm F2.8 has two stops in between 2.8 & 5.6: are these 3.5 & 4 or 4 & 4.5? The 135 F3.5 has one stop between 3.5 & 5.6: is it 4 or 4.5?
I haven't been able to find this info on the web, so any help would be appreciated. As long as the photos turn out well I'm happy, but if someone asks what aperture one was taken at, I'd like to be able to tell them