Search results for 'back focus' - page 1232
55mm 1.4 SDM failure --> use with MF or send back? help
Alternatively buy a 50-135 and convert to screwdrive. It's an unbelievably good lens! The f/2.8 aperture isn't a big limiting factor for portait shots, and it has wonderful rendering.
Posted by HarisF1 on 29/04/2026 - 15:13
55mm 1.4 SDM failure --> use with MF or send back? help
Not meaning to take this off topic but the alternative portrait length Pentax lens for APS-C is the DA 70mm Limited. It's an excellent lens and doesn't have SDM to fail, it uses the old screw-drive AF method.
Posted by Jonathan-Mac on 30/04/2026 - 10:40
55mm 1.4 SDM failure --> use with MF or send back? help
Not meaning to take this off topic but the alternative portrait length Pentax lens for APS-C is the DA 70mm Limited. Or the FA 77mm f1.8. Steve
Posted by Lubbyman on 30/04/2026 - 12:04
55mm 1.4 SDM failure --> use with MF or send back? help
I've heard AF is slow but have never tried it. Given that the AF on a working one is likely to fail before long, is getting one a good idea at all? I have had a copy of this lens for years - AF response is good and the image quality is superb. While other SDM lenses I have owned, particularly the 5...
Posted by SSF1957 on 01/05/2026 - 07:14
55mm 1.4 SDM failure --> use with MF or send back? help
Would a DA 35/2.4 be fast enough/good enough?
Posted by smc on 01/05/2026 - 17:53
55mm 1.4 SDM failure --> use with MF or send back? help
Is the DA*55 able to be coverted to screw-drive like the 16-50 and 50-135? Or is it like the 17-70 which is SDM only? I nearly bought a 17-70 years ago (when my DA*16-50 was being fixed for the first time), new from Jessops in Richmond - and it did not work. If there are no means to convert the ...
Posted by Pwynnej on 14/05/2026 - 14:18
55mm 1.4 SDM failure --> use with MF or send back? help
It cannot be converted unfortunately as it has no screwdrive built-in.
Posted by HarisF1 on 14/05/2026 - 17:08
55mm 1.4 SDM failure --> use with MF or send back? help
Then I would suggest OP returns the lens.
Posted by Pwynnej on 18/05/2026 - 10:03
2 Manual focus Pentax lenses available for sale
1 - SMC Pentax-A (green star) 85mm f1.4 manual focus lens , boxed, looks like new. no fungus or dust, apertures smooth. tried on my K70 and K3iii. works perfectly. 2 - SMC Pentax-A 20mm f2.8 manual lens - boxed, excellent condition, no fungus/dust, aperture smooth, tried on my K70 & K3iii works p...
Posted by JudgeTed on 17/06/2026 - 13:44
2 Manual focus Pentax lenses available for sale
Photos added Photos attached of lenses and boxes
Posted by JudgeTed on 17/06/2026 - 14:12
2 Manual focus Pentax lenses available for sale
I've owned both these models and enjoyed them very much - I recently re-purchased an A* 85mm f1.4 and it really is one of the best quality lenses I've ever had, they don't come along too often and very rarely in this condition! If you don't get some offers on these I'd be amazed!
Posted by LennyBloke on 17/06/2026 - 16:47
2 Manual focus Pentax lenses available for sale
Both top class lenses. I only sold my 85 as I'm not a huge MF shooter, but it's an eye-opener in terms of quality.
Posted by HarisF1 on 17/06/2026 - 17:57
What's my SMC Pentax-A* 135mm F1.8 lens worth?
The Legendary A* 135mm f1.8 has been a very sought after lens over the years and the prices it demanded rocketed a few years back - the picture today is less clear, very few have been on the market recently and when the Samyang 135mm f2 was introduced there were discussions over the newer lens being...
Posted by LennyBloke on 06/07/2026 - 21:36
What's my SMC Pentax-A* 135mm F1.8 lens worth?
Thanks guys. I do seem to remember it going for around £1800 some years back but now it does appear to generally be going for a few hundred quid lower.
Posted by davidxgreen on 07/07/2026 - 14:20
What's my SMC Pentax-A* 135mm F1.8 lens worth?
I believe COVID era collecting boosted the price of everything and prices are coming back to “normality”. There still seems to be an appreciation of Pentax glass, especially TAKUMAR lenses and especially from cinematographers as well as the mirrorless crowd.
Posted by smc on 09/07/2026 - 08:45
Trying out the Pentax M 50mm f1.7 on my K 70
The classic 50mm f1.7 MF lens is a cracking lens and so easy to focus with.
Posted by WiltshireBorn on 26/07/2026 - 13:48
Sigma 600mm Mirror Lens
I wish I could afford a super telephoto lens for birding but I can't, so I bought this old Sigma 600mm mirror lens and gave it a try yesterday. I thought I had nailed the focus in my shots and was disappointed to find that not the case when I looked at them on my PC. However, Topaz Photo AI came to ...
Posted by WiltshireBorn on 28/08/2026 - 11:31
Sigma 600mm Mirror Lens
Yes, there are artifacts, the birds look to be rather over-sharpened to my eyes. However, a good first attempt. As a long focal length, manual focus lens with small aperture, focusing the Sigma 600mm is inevitably going to be tricky. In that situation, there is something to be said for taking severa...
Posted by Lubbyman on 28/08/2026 - 12:13
Sigma 600mm Mirror Lens
Sorry but the AI artifacts are rather too visible for my tastes. Yes I know they are pretty bad but if you saw the original out of focus images, you probably would have binned them :)
Posted by WiltshireBorn on 28/08/2026 - 15:25
Sigma 600mm Mirror Lens
Sorry but the AI artifacts are rather too visible for my tastes. Yes I know they are pretty bad but if you saw the original out of focus images, you probably would have binned them :)Yes, there are artifacts, the birds look to be rather over-sharpened to my eyes. However, a good first attempt. As a ...
Posted by WiltshireBorn on 28/08/2026 - 15:28
