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
--
%(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.
