On Mon., Jun. 28, 2021, 4:19 p.m. Mark C, <[email protected]> wrote:
> On 6/28/2021 1:49 AM, David Mann wrote: > > On Jun 28, 2021, at 5:22 PM, jtainter <[email protected]> wrote: > > > >> Bill wrote: > >> > >> "Does anyone know if the above mentioned lens needs a filter in the > filter drawer to achieve it's maximum magic? > >> "Thanks" > >> > >> Bill, the F* and FA* 600 F4 lenses do require a filter as part of the > optical system. I would therefore suspect that the A* 600 does also. > > I just had a look at the optical diagrams on the K-Mount Page. The F / > FA optical diagram shows the filter as part of the optics but the A* > 600/5.6 doesn't. I certainly wouldn't take that as gospel as I don't know > where those diagrams come from. I'd tend to assume that any lens with a > filter drawer would need the filter. Clear as mud :D > > > > Cheers, > > Dave > > -- > > Interesting note about the optical diagram. I've had the question > about filters on the A* 400 f2.8 and its optical diagram does show a > filter in place. never thought to check that. I always used a UV filter > with that lens but wondered if it was really needed. > > Mark > -- > My A* 600/5.6 (I like being able to say that) came with a huge Tamron clear filter. Probably a UV. It was a sharpness killer. I took it off and the lens is a lot better. I suppose I should toss a filter into the drawer and see what happens. Bill > -- %(real_name)s Pentax-Discuss Mail List To unsubscribe send an email to [email protected] to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
