Hi Pentax users,
a few months ago I bought Pentax 645 and 35, 75 and 150mm lenses from ebay and KEH, so
my old dream came essentially true. This X-mas-New Year vacation week I spent in Big
Bend National Park, Texas, USA, testing my gear in the field. It was pretty sudden
decision, so I was not 100% prepared. In the last minute I bought 77 mm rubber
wide-angle no-brand-name hood and 77 mm Tiffen
81A warming filter for my 35/3.5 lens to accompany my B+W 58mm 81A for the other two
lenses. I got some corner vignetting on some of my wide-angle shots. I suppose that it
probably happened when both the filter and hood were used. Probably focusing distance
also
might influense a degree of the vignetting. Can you recommend me filter+hood
combination for P645 35 mm lens, which would allow to avoid vignetting?
I have learned that Pentax make its own 77 mm wide-angle rubber hood, probably for the
35/3.5 lens. Any info about it? Maybe I have to use a step-up ring to 82mm and use
bigger hood or even bigger filter? The Tiffen filter has pretty thick (or wide?)
mount. It is thicker than the 58mm B+W SE (or ES) filter I have. I also have 58mm
Pentax skylight filter which has the slimmest mount of all of them. I do not know
however if the mount thickness varies with the diameter? Are Heliopan filters thinner
than those of Pentax?
I would appreciate your advice,
Gleb Baida.
P.S. I am quite satisfied with Pentax filters as judged by apparent quality, slim
mount and lower level of light reflected from them. But Pentax makes only 81A filters
and I do not know how identical or different are their from other 81As "by their
color" and if I could complement Pentax's 81A with 81B from Heliopan or elsewhere. So
I might have to chose one brand for the system.
___________________________________________________
GO.com Mail
Get Your Free, Private E-mail at http://mail.go.com
