On 27 Apr 2002 at 21:22, Jonathan Donald wrote: > #1)I was inspired to save up and hold out (look > harder?) for a Pentax K18/3.5 until I learned its true > focal length of 19mm. That seems so close to 20mm, > that I might as well just get the A20/2.8 which is > [somewhat] cheaper, easier to find, and faster (but > not as wide as I wanted). Does anybody know if the > A20/2.8 is ~truly~ 20mm,... or is it 21mm or 22mmish? > Can it take the Cokin P system without vignetting?
Well the measured FL of the FA20f2.8 at the photodo site is 20mm if this is of any help? > #2)How does one "bodge" a gelatin filter to the rear > of a K or A 15mm/3.5? Has anyone ever tried to have > the built in filters changed out at a repair shop? Thought about changing the filter sets in my 15f3.5, 16f2.8 and 28f3.5shift but decided that the money would be better spent one the new digital SLR :-) > #4)Speaking of f22, does anyone know how the A20/2.8 > does at this aperture? Stan's lens comment site > indicates the K18/3.5 is poor in this respect. > Elsewhere I remember reading that the K/A 15mm/3.5 is > a bit soft wide open but sharp as hell down to minimum > aperture. Does this reflect the experiences of the > lucky PDMLers who own these lenses? Never use the A20f2.8 at f22 as the DOF is pretty broad unless you're at the minimum focus distance. The A15f3.5 is pretty sharp at f5.6. > As you can probably tell, I'm leaning toward aquiring > a 15mm ~and~ a 20mm to cover the ultra-wide range. I > don't really want to do this, but it seems I have > little choice. There dosen't seem to be a decent > quality "in between" lens that can take the place of > both. The combo of the A20f2.8 (at around US$375) and A15f3.5 (At around US$750) would be quite costly compared to the 18f3.5 (at around US$450). I haven't used the 18mm, from all that I have read it seems to please most of it's owners performance wise but it won't allow you to do what the two lens combo will at any rate. The AOV difference between 15 and 18mm is quite large. The 20mm is nice light compact lens whereas the 18mm is getting bulky. All depends on how much you are wishing to spend I guess, you could acquire all three? Cheers, Rob Studdert HURSTVILLE AUSTRALIA Tel +61-2-9554-4110 UTC(GMT) +10 Hours [EMAIL PROTECTED] http://members.ozemail.com.au/~distudio/publications.html - This message is from the Pentax-Discuss Mail List. To unsubscribe, go to http://www.pdml.net and follow the directions. Don't forget to visit the Pentax Users' Gallery at http://pug.komkon.org .
