Search results for 'back focus' - page 1208
Revamped FA 35mm f/2 rumor
The K-1's screen is one of it's best features. For low tripod use it has saved my back on many occasions.
Posted by pschlute on 02/02/2019 - 17:57
Revamped FA 35mm f/2 rumor
Another point is that a criticism generally of the K1 and K1 mk2 is the small number of new lenses available, and that the older lenses do not compare well with newer offerings; upgrading is a relatively quick and easy way to address these criticisms. I never understand this criticism of lack of len...
Posted by Jonathan-Mac on 03/02/2019 - 18:18
Revamped FA 35mm f/2 rumor
Compared to other systems there are very few modern lenses for Pentax FF, I think that's the complaint, and they're right. Re-vamping the FA limiteds with in-lens focus motors would be an even smarter move. Complaint about lack of modern primes is valid. To claim "very few" modern lenses i...
Posted by pschlute on 03/02/2019 - 18:51
Revamped FA 35mm f/2 rumor
Compared to other systems there are very few modern lenses for Pentax FF, I think that's the complaint, and they're right. Re-vamping the FA limiteds with in-lens focus motors would be an even smarter move. Complaint about lack of modern primes is valid. To claim "very few" modern lenses i...
Posted by Jonathan-Mac on 04/02/2019 - 08:55
DA35 Macro problems
Hi all. Just got a second hand DA35 Limited and am trying to figure out if it is mechanically faulty. As I turn the focusing ring it 'skips' having area that are really loose and others that are really tight. When using autofocus the camera sounds like it is struggling to turn it. For comparison ...
Posted by Tyr on 30/01/2019 - 10:45
DA35 Macro problems
Just checked mine. Smooth action throughout the manual focus range. Usual whirr when AF. Seems you have a dud I'm afraid.
Posted by JohnX on 30/01/2019 - 11:21
DA35 Macro problems
Thought as much. Just got in touch with the shop, sending it back. They've offered to see if a service/repair will fix it. I'm happy to try that first. Failing that a refund or a different 35 Macro (they have a second one to compare it with).
Posted by Tyr on 30/01/2019 - 11:32
DA35 Macro problems
It sounds like it's got a fault but it also sounds like something that could be fixed. The focusing in my DA 40mm seized up completely a while back and a €45 service fixed it.
Posted by Jonathan-Mac on 30/01/2019 - 12:31
DA35 Macro problems
Lens is back from repair. It is still slightly stiffer than other lenses I have and have used but importantly it has no 'wobble', the camera does not struggle to turn it and it all seems to be working correctly. Pleased with the result. Sadly I'm not keeping it as it is a gift for someone else :( .
Posted by Tyr on 24/02/2019 - 16:02
DA35 Macro problems
I've had this issue before and it's a tough one. Sometimes the AF guide helicoid (if I can call it take) comes loose and causes issues as it rotates along with the focus ring/screwdrive. It's a pain in the backside to adjust.
Posted by HarisF1 on 24/02/2019 - 21:17
20-40 or 18-35
I have both. They are both good quality lenses. Many people have experienced focus issues with the Sigma, particularly when using multi-point AF. I generally use centre point AF and have not had any problems. Other than that the main difference is size and weight. The Sigma is huge next to the Penta...
Posted by smudge on 31/01/2019 - 21:15
20-40 or 18-35
The obvious choice would be the newer Sigma model, which is 17-50mm. I remember buying an 18-50mm as my first "good" lens for my K200D and took it back the next day as it was very soft wide open. I changed for a Tamron which was much better optically, though with poorer build quality. More re...
Posted by Jonathan-Mac on 01/02/2019 - 09:15
55-300mm lens
Yes, it is very compact in your bag, very quiet, doesn't hunt for focus, very quick locking AF. I use mine on my K3II and K3 before that. Love it. See loads on my gallery on here. Cons: No focus scale for manual and only F5.6 to around 250mm then loses third of a stop due to retracting constructi...
Posted by wvbarnes on 09/02/2019 - 12:50
55-300mm lens
So when was this launched? I had the previous version which was slow and noisy to focus but produced good results.
Posted by RobL on 11/02/2019 - 07:22
Irix 150mm Macro
With all the excitement about the new Pentax lenses, has anyone noticed the new Irix 150mm macro? I’ve acquired one because of niggling limitations of my film-era Sigma 105mm macro: not WR, fairly short working distance at 1:1 magnification and big extension when focussing. Buying a newly release...
Posted by Lubbyman on 15/02/2019 - 11:29
Irix 150mm Macro
Due to focus breathing this lens doesn't give you any more working distance than the Pentax 100mm WA when you put a hood on. Also check the point about f/16 resolution in this post.... https://www.dpreview.com/forums/thread/4366642 --
Posted by Algernon on 15/02/2019 - 15:29
Irix 150mm Macro
Due to focus breathing this lens doesn't give you any more working distance than the Pentax 100mm WA when you put a hood on. So all in all a bit pointless then :?: I didn't look into it that much but presumed it had an aperture ring as it is missing the contacts to do it in body.
Posted by Mike-P on 15/02/2019 - 15:49
Irix 150mm Macro
I don't use a hood as I have my own built into my ring flash diffuser. I'd like to see a sample shot with irix at min focus distance and with the 100mm at min focus distance. At any aperture. Of same subject. I have never used the distance scale on any lens, so no loss or gain for me. Still do...
Posted by derek897 on 15/02/2019 - 19:19
Irix 150mm Macro
As promised, here's a graph of magnification vs working distance for the Irix 150 and Sigma 105. Strictly speaking, it's magnification relative to size at minimum focus distance. I've assumed for each lenses that magnification at its minimum focus distance is 1:1 as manufacturers claim. All done usi...
Posted by Lubbyman on 18/02/2019 - 10:18
Irix 150mm Macro
This one for Barry E. Here are a few non-macro pictures, focus ranging from about 20 yards to about 3/4 mile. Done while walking the dog, K3 held by one hand, other hand holding dog on lead and focussing with a couple of fingers, so challenging to say the least! SR on. Aperture and ISO chosen to giv...
Posted by Lubbyman on 19/02/2019 - 23:44
