Search results for 'back focus' - page 665
the insult of it!
Have you noticed the number of Pentax lens to Canon Body adaptors that frequently appear on ebay, do we see Pentax to Nikon or any other combination? I think only rarely. Spider much as I would dearly love to use this as an excuse to dig at Canon, the reason is that the EOS line has a shorter back...
Posted by Mongoose on 09/03/2007 - 18:44
Info needed regarding Pentax A smc 55mm 1.2 lens
Pete, that lens would be an excellent choice. As it's A series (with electronic contacts), it will enable full program exposure and multi-pattern metering. The only thing you lose is AF because it's a manual focus lens. As stated above, this was the cheapest of the 50mm lenses because it had the...
Posted by Kimbo on 11/03/2007 - 17:16
Info needed regarding Pentax A smc 55mm 1.2 lens
Pete, you have another PM. In answer to you question, In the manual focus catagory look for either an SMC- F f1:1.4 or f1:1.7 within you budget. In the Auto focus range and Pentax-F or Pentax-FA f1:1.4 or f1:1.7 will do, there ain a lot of difference except cost. Now, read your PM quickly.
Posted by McBrian on 11/03/2007 - 21:03
Info needed regarding Pentax A smc 55mm 1.2 lens
Pete, you have another PM. In answer to you question, In the manual focus catagory look for either an SMC- F f1:1.4 or f1:1.7 Now, read your PM quickly. I assume you meant to say SMC-A? SMC-F is early autofocus. My recommendation would be the A series 50mm F1.7 for MF or F/FA (doesn't matte...
Posted by Mongoose on 11/03/2007 - 21:23
Info needed regarding Pentax A smc 55mm 1.2 lens
I've no idea why Pete still claims to be confused, surely we've covered everything between us! In a nutshell, Pete get one of these: either SMC Pentax-A 1:1.7 (manual-focus) or SMC Pentax-F or FA (optically the same) 1:1.7 (auto-focus)
Posted by Kimbo on 11/03/2007 - 22:02
Price for a Pentax SMC - F 50mm 1:1.7 ???
Sorry Pete, I haven't got any images... I've only used the f1.4 on the K10D. (The f1.7 is on the *ist-D at the moment). I only have images taken with the *ist-D. Believe me, it's a sharp lens. Do be aware, though, that you have the opportunity of VERY shallow depth of fields. If you shoot wider t...
Posted by MattMatic on 13/03/2007 - 09:23
Price for a Pentax SMC - F 50mm 1:1.7 ???
Pete, I'm a little disappointed that you asked for some idea of prices, after I went to the trouble of including the following in one of your earlier threads - re: the A series F2 ..... this was the cheapest of the 50mm lenses because it had the smallest maximum aperture but is still a very good ...
Posted by Kimbo on 14/03/2007 - 04:01
Price for a Pentax SMC - F 50mm 1:1.7 ???
The M series lens has no A setting on the aperture ring and also no electrical contacts. The A lens will be fully compatible with the DSLRs, but only manual focus of course.
Posted by johnriley on 05/04/2007 - 10:50
Price for a Pentax SMC - F 50mm 1:1.7 ???
You need a SMC Pentax-F, SMC Pentax-FA, SMC Pentax-DA, SMC Pentax-D-FA lens if you need auto-focus.
Posted by Mannesty on 05/04/2007 - 11:09
coating coming off lens
The lens itself is not scratched, I've taken the pic in a way to emphasise how that coating has come off. It definitely appears that someone has been over zealous with the cleaning. My guess is some type of solvent has been used. I have tried a dab of petrol (knowing that that won't affect glass) bu...
Posted by philmerrin on 21/03/2007 - 22:44
SMC PENTAX-FA 3.8-5.6 28-200
I wrote a review of the FA28-200 a few years back and you can see it here
Posted by niblue on 30/05/2007 - 10:33
SMC PENTAX-FA 3.8-5.6 28-200
I wrote a review of the FA28-200 a few years back and you can see it here I think your review is fair, now that I've had the lens for a couple of months. I haven't experienced the flare problems, nor found the viewfinder image particularly dim, despite using it as a MF lens quite a bit. I pa...
Posted by ChrisA on 30/05/2007 - 11:20
SMC PENTAX-FA 3.8-5.6 28-200
I wrote a review of the FA28-200 a few years back and you can see it here I think your review is fair, now that I've had the lens for a couple of months. I haven't experienced the flare problems, nor found the viewfinder image particularly dim, despite using it as a MF lens quite a bit. At the ...
Posted by niblue on 30/05/2007 - 11:32
SMC PENTAX-FA 3.8-5.6 28-200
What I mean was that when you're focusing on something close you can see it getting larger & smaller in the viewfinder (for example if you changed from a focus point nearby to one far away) so it did appear as if the focal length changed as the various lens elements moved about. It wasn't a big ...
Posted by ChrisA on 30/05/2007 - 11:38
SMC PENTAX-FA 3.8-5.6 28-200
What I mean was that when you're focusing on something close you can see it getting larger & smaller in the viewfinder (for example if you changed from a focus point nearby to one far away) so it did appear as if the focal length changed as the various lens elements moved about. It wasn't a big ...
Posted by Mongoose on 30/05/2007 - 12:14
SMC PENTAX-FA 3.8-5.6 28-200
"just to be clear, this happens with all lenses, more noticeably the closer the focus is, are you saying this lens does it more than most?" It's not something that I notice particularily when using other zoom lenses, however this particular lens probably focuses closer than any of the o...
Posted by niblue on 30/05/2007 - 13:50
SMC PENTAX-FA 3.8-5.6 28-200
it becomes a lot more noticable as you get in to really close focus (which lets face it half a meter at 200mm is pretty close!), it's possible you've just never noticed it with more "normal" focusing zooms. Actually it happens with primes as well. This effect is the reason why you shoul...
Posted by Mongoose on 30/05/2007 - 13:57
KA mount wierdness (ist DS and various KA mounts)
Hi, and welcome to the forum.. :D does the zeiss have a rear element that protrudes out from the back of the lens.. or more precisely, a metal ring with around a third of it's circumference raised? This is seen on some third party 70-210s (especially macro lenses) for some reason. I have a S...
Posted by LiamD on 17/03/2007 - 13:36
KA mount wierdness (ist DS and various KA mounts)
YES!!! thank-you Don! it was one of the flanges bent slightly in, just barely visible, i bent it back and the lens fit on, with a little wiggling. will bend it a tiny bit more to avoid the wiggling next time
Posted by thomastherhymer on 17/03/2007 - 19:45
The return of the prodigal lens?????
I just saw a new lens on the Pentax Web site, a P-FA 200mm f/4 Macro. Specs are the same, the barrel looks the same, and perhaps Pentax realized that if they made the lens again, people would buy it. I'm sorry to burst the bubble Arthur, but according to Pentax UK this lens will never be made again...
Posted by McBrian on 18/03/2007 - 09:11
