I put this in the film forum because anyone in the crop crowd will be clueless since almost anything works on those. I have a Pentax A35-105 F3.5 that I use for film stuff with a yellow filter and occasionally for color with a standard haze filter. I want a hood for this lens but anything I can find that fits the 67mm filter size causes vignetting at 35mm focal length in full frame even without a filter, though I do have a collapsible one that works good on the DSLR.
I haven't wanted to waste film experimenting too much after I found the vignetting on the wide end pics so I don't know if its too narrow on the filter end of the hood (too slow of a taper) or on the outer end (not enough taper overall). I know the screw on rubber genuine Pentax hood for my A24-50 tapers almost flat at first before curving out so I am suspecting my current hood wouldn't work even if I hack the outer edges off to shorten it.
I see Pentax has an impossible to find RH-B 70mm rubber press on hood for this lens which should work fine for it, but I am curious how filters work with that hood since I am only used to screw on hoods.
As a more general question are Pentax hoods normally designed to work with at least a single filter and no vignetting? Does the hood normally go on first and then the filter in the hood's external threads or can I put the filter on first if the filter has external threads.
BTW if anyone has an RH-B 70mm Pentax hood I would like to buy it.
Last edited by PPPPPP42; 09-09-2013 at 10:32 AM.