Search results for 'back focus' - page 1167
Sigma 18-35mm f1.8 DC HSM Lens
When a reputable camera magazine reviewed some of the very wide, very fast lenses they commented that camera manufacturers would not offer them. The reason was that focusing them is a challenge for the body and only the very best pro bodies had enough accurate AF points to do so (even on full-fat pr...
Posted by johnha on 22/10/2015 - 01:23
Sigma 18-35mm f1.8 DC HSM Lens
Thanks for the feed back all. I have not seen any issues with focusing on the video reviews. However I will dig into the issue and see if I can find out more. Regards Ian Hi Ian, I'm also looking at this lens amongst others, and I think the reason that the focusing issues don't come up at all in ...
Posted by derek897 on 29/11/2015 - 02:19
Sigma 18-35mm f1.8 DC HSM Lens
Thanks for the feed back all. I have not seen any issues with focusing on the video reviews. However I will dig into the issue and see if I can find out more. Regards Ian Hi Ian, I'm also looking at this lens amongst others, and I think the reason that the focusing issues don't come up at all in ...
Posted by philstaff on 07/04/2016 - 14:37
Pentax DFA 150-450 + DA1.4x Combination
Thanks Barrie, you are very fortunate with the birdlife you get! It's just that I took two pics of a wagtail recently, one with a 100mm macro which happened to be on the camera, and a 55-300mm at 300mm. Zooming in on the back of the camera so the bird looked the same size the 100mm version looked sh...
Posted by RobL on 22/10/2015 - 13:27
Is Moving from an FA50 1.7 to FA 43 Ltd an upgrade?
I only have the FA 50/1.7 of these two and it's very good, though focusing is not the most reliable, when it does focus properly it's very sharp indeed with good colour and contrast.. Build quality is quite low and nowhere near as good as my DA limiteds (which I assume are similar in build to the F...
Posted by Jonathan-Mac on 23/10/2015 - 08:18
Is Moving from an FA50 1.7 to FA 43 Ltd an upgrade?
Thanks for the comments everyone. I am keen on the build quality of the 43 (having just picked up a DA15 and loving the all metal construction with AF), but have to say I don't find the build of the FA50 that bad, my copy is certainly solid with a nice tight focus ring. Interesting to note th...
Posted by lostboy on 23/10/2015 - 11:13
My Pentax 21mm f3.2 Ltd
It's a good lens. Once you've worked out why you need a faster lens at that length, let me know. Others say it's for low light and some say for shallow DOF at minimum focus distances. I'm happy with my copy. Best regards
Posted by K10D on 30/10/2015 - 06:50
My Pentax 21mm f3.2 Ltd
you're right, i really don't think the idea of this type of lens is to take super close ups. Also, the DOF automatically decreases by a large amount when getting close. Even at f 3.2 or around this value. My previous used prime wide angle lens is the SMC-A 24mm f2.8. I never used it at this...
Posted by LawrenceKH on 06/11/2015 - 11:29
What to buy? New HD PENTAX-D FA 150-450mm or a Pentax-FA* 400mm F5.6 ED [IF]
See my portfolio ; I have been on a bit of a sojourn with the 150-450; don't use my 300DA * much anymore. There's a good mix of subjects in my Portfolio where I have pushed the lens to the absolute limit, even a landscape. Also see the dragon fly portrait I entered in the "wings competition" so...
Posted by Daronl on 13/11/2015 - 05:07
Lenses for using with bellows.
Recently whilst browsing eBay I managed to get a genuine set of "Pentax Auto Bellows M' cheaper than expected so took the plunge and bought them on the spot. Must say that they are an absolutely fantastic piece of kit! Now the question is, what lens to put on it? Unfortunately all of our lenses (...
Posted by Unlocker on 14/11/2015 - 10:53
Lenses for using with bellows.
I tend to use an M42 Russian, Jupiter 11A, 135mm with a preset diaphragm (any 135 will do the job but you can watch the DoF change in real time with a preset). A 135mm provides huge versatility in use from as much as two - three feet distant to right on top of the subject. You can make the magnifica...
Posted by davidwozhere on 15/11/2015 - 00:58
Some great Black Friday deals- any method to get delivered to Europe cost effectively?
Following your link there are some incredible prices - i.e. Pentax 17-17 at Adorama for the equivalent of £190/euro271. Great if you or someone you know is in NY. I used to have two friends in the US but they're both back home for good now. :( There's some lovely lenses, which I don't need b...
Posted by dinneenp on 19/11/2015 - 13:18
Pentax SMC 17-70 mm f/4.0 f/s with crumbs inside.,....
I wouldn't have thought that it would make any difference (if the crumb is that white thing at about 10 o'clock on the back of the front element). If you are worried about flare you could always mark the lens front with a black felt tip marker over the crumb. I'd keep an eye out for fungus though, w...
Posted by kh1234567890 on 19/11/2015 - 16:01
Pentax 55-300mm HD & 100mm WR early 'Black Friday' PU forum exclusive promotion!
Great service from SRS. I've had my eyes on the 100mm macro for a while and when I saw the price being offered on this thread, I jumped at it immediately, placing the order last Saturday. However, there was a problem. I was on holiday and didn't want the lens to arrive before I got back. So in m...
Posted by IanReigate on 28/11/2015 - 18:41
Pentax DA17-70... a little gem
My poor old DA*16-50 needs another hospital visit (third time I think :( )... and I saw that SRS had a bunch of DA17-70 second hand lenses in good condition for around the £200 mark, and thought about a lens a tide me over. (I had the DA17-70 originally when it came out, and used it for years - look...
Posted by MattMatic on 23/11/2015 - 13:55
Pentax DA17-70... a little gem
I have the same problem Matt, I love my 16-50 but It is just too unreliable to be the mainstay even after a recent visit to the repair shop. I was on the verge of getting a DA17-70 again but I plumbed for a the HDA16-85 when SRS had it on offer, pretty happy with it, maybe the DA17-70 has a slig...
Posted by McBrian on 24/11/2015 - 15:52
Pentax DA17-70... a little gem
Thanks for the tips Brian ;) Mine seems to have a clutch/SDM fault. When it gets stuck, moving the focus ring doesn't move the focus - or it moves a bit then stops - almost as though the clutch is always slipping. I did look at screw drive on the 16-50 (possible and quick with son's K7), but it'...
Posted by MattMatic on 24/11/2015 - 17:24
The Dreaded Fungas
Well the lens arrived back yesterday from Alan Marlow and all is well, and cheaper than a couple of hours with Sigma which included return postage:D
Posted by fatspider on 09/01/2016 - 11:13
Samyang 85 on a hike
https://lawrencehelm.smugmug.com/RiverPhotography/Dec-2015/ Why doesn't Pentax have an 85mm in their lens lineup? The thought occurred to me that perhaps Samyang under three names produced an 85mm so good, cheap and easy to use that Pentax didn't want to try to compete. I decided to pick one up...
Posted by LawrenceKH on 04/12/2015 - 02:03
Samyang 85 on a hike
Samyang lenses can be excellent, but manual focus only. Pentax do make an 85mm lens, in a way. The equivalent for APS-C format is the 55mm f/1.4. They also make a 70-200mm f/2.8, which is the 50-135mm f/2.8. I've noticed quite a few photographers think in 35mm format terms when asking for foca...
Posted by johnriley on 04/12/2015 - 08:50
