That old lens problem page 1
Cunt 3rd February 2012, 01:02 AM So I bought an old lens. Specifically, it is a manual focus f1.2 50mm.
It has an interesting problem now that camera technology has advanced. I will see if I can explain it adequately without resorting to linking references...
The DoF available with an f1.2 is fucking unreal (lets say, 1cm at 1m, just to make up numbers to use). The viewfinder on my Pentax (and all dSLR's today) can 'see' down to about f1.9 or so...maybe f2.8 (lets say, 4cm at 1m) What this means is that I have to 'bracket' my focus point to be sure I have what I want in focus. (it also means that I can see through those super-zooms, so I understand Pentax and others making the compromise)
Now, about bracketing. The military used to use the method for dropping artillery on stuff. By the fourth or fifth shot, you were ranged and going to get dead. Nowadays, they get you in two (sometimes one). What I am hoping is that there is some math trick that allowed ...