Search results for 'back focus' - page 807
help: dropped a lens, what can i do
If you are a magazine subscriber you get a discount. I was surprised that the repair to my 50-135mm was only 78 quid after the discount (new front barrel and new motor) but the repair took ages and I haven't had a chance to test it yet as it is back in the UK and I am not.
Posted by womble on 06/09/2009 - 08:01
Sigma 75-200 f2.8-3.5 PKA mount
Thanks for the suggestion. Unfortunately as far as I can see there are zero Sigma manual focus lenses listed at Photodo.
Posted by thoughton on 01/09/2009 - 08:47
Sigma 75-200 f2.8-3.5 PKA mount
Hi Tim Interesting story. I started with my Dad's 60s S3 which I still have. In 1983 I purchased a Super A from Hong Kong which I got rid off a little while ago. Stunning camera. The only lens I kept from that I had purchased circa 1984 .. Again Hong Kong. Rarely do you have a shop assistan...
Posted by pgamble on 01/01/2014 - 20:55
prime lenses
Offertonhatter - From my experience the 35 f2 is simply superb in every respect - quality, colour, sharp, size which is modest but not tiny, weight. I can't praise it enough on my K10D. I was lucky to pay £235 new from SRS some time ago. I also have he Sigma 30 1.4 which is a fine lens but on my ...
Posted by mikew on 04/09/2009 - 07:27
Pentax 135mm Lens
I have the A 2.8 version, and don't really recommend it. You have to work hard to get good results - it can be lacking contrast in particular. I found it to be a reasonably good lens for stage events, where you can't get physically quite close enough to the action, and where the background is dark...
Posted by El Dingo on 07/09/2009 - 21:30
Pentax 135mm Lens
I bought the K-version from ebay a while back at - err - a members recommendation and like it a great deal. It doesn't get used as much as it might, however, as (a) it is heavy and (b) I have run out of room in my camera bag and have to leave something behind! I was thinking of buying the A versio...
Posted by womble on 08/09/2009 - 20:56
Who knows old pentax smc-F 100 2.8 macro?
You can find out everything you'll need to know about these lenses . Lens construction is identical. The FA is 10 grammes heavier and has a focus clamp to stop the lens barrel creeping. That's about it.
Posted by Mannesty on 06/09/2009 - 09:37
Who knows old pentax smc-F 100 2.8 macro?
The FA lens will have enhanced communication with the camera body, in common with FA lenses in general Erm, John I think you'll find it's the same with the SMC-F ;) I have the SMC-F 100/2.8 macro. A very, very fine lens indeed. As Peter says, there's no barrel clamp, but it has the same formula ...
Posted by MattMatic on 07/09/2009 - 08:53
Tamron 18-250, how's yours?
Often use mine (Tamron flavour). At the wider end it should be at least as sharp as the kit 18-55 lens if not better (more barrel distortion though). Things get a little softer at the tele end but the centre always remains reasonable, even wide open at 250mm. Have you tried it on a tripod, just...
Posted by JonSchick on 07/09/2009 - 11:00
Tamron 18-250, how's yours?
Had the Pentax version and it seemed good till I got the DFA 100mm macro and I sold it to finance the DA*50-135 since I hardly use that lens. The DA18-250 I had preformed good on my K10D, no focus problems or sharpness issues. I did had CAS though wide open and using it on the long or wide ends. ...
Posted by Anvh on 07/09/2009 - 15:51
Tamron 18-250, how's yours?
Compared to the Sigma it lacks performance, which it shouldn't, it should be better according to the reviews I've read.8) I have a Pentax 18-250mm. Just focus at 250mm and zoom out to the desired focal length, while locking focus. In this way my pictures are very sharp indeed.
Posted by Hythloday on 07/09/2009 - 19:17
Tamron 18-250, how's yours?
UPDATE I've returned the lens to Jessops who're going to send it back to Tamron. Now all I can do is wait....:(
Posted by Hardgravity on 08/09/2009 - 16:52
Tamron 18-250, how's yours?
Good luck - hope it comes back (or is replaced) in much better condition...
Posted by JonSchick on 08/09/2009 - 22:49
Macro different mm
I'll trot out my stock reply to a question like this. I was advised the Vivitar 100mm f3.5 macro was good and cheap costing em £40. I felt that was a sensible amount to see how useful a macro lens would be. It doesn't do 1:1 unless you get the additional lens which I didn't but I have never really w...
Posted by mikew on 08/09/2009 - 20:51
Macro different mm
Don't know about the 35mm Sigma 50mm min focus distance is 0.188m Sigma 105mm " " " " 0.313m
Posted by bforbes on 08/09/2009 - 21:10
Macro different mm
I thought 1:1 meant for 100mm it was 100mm away? 1:1 only refers to the magnification ratio. In lame terms: A 1:1 macro lens is capable of reproducing a object life size. for instance: a coin with a diameter of 2 cm will be reproduced exactly the same size. This all goes back to the film days, b...
Posted by Malo1961 on 08/09/2009 - 21:45
Macro different mm
Aiki, Macro lenses will of course give a similar picture to an ordinary lens of the same focal length, but there are other characteristics that make a macro lens better for close-up work. 1 They focus VERY close. 2 They are always very sharp. 3 They will usually have a flat plane of focus...
Posted by George Lazarette on 09/09/2009 - 07:45
Macro different mm
Just a little comparison My SMC A50mm 10p Piece at minimum focus distance of 45cm SMC A50mm @f5.6 My Tamron 70-300mm at 300mm minimum focus distance of 95cm Tamron 70-300mm @300mm f5.6 (forgive camera shake) My Nikkor 55mm macro with AI-PK Adapter (optics removed) min distance 10cm Ni...
Posted by ManixZero on 09/09/2009 - 10:42
Macro different mm
With macro lenses you might find that a manual focus one will be fine. It will for static subjects such as plants. Maybe not for butterflies and insects in general, AF can be handy there. For static subjects a sturdy tripod is essential to avoid camera shake and to ensure accurate focusing.
Posted by johnriley on 09/09/2009 - 10:48
Macro different mm
When I first wanted to get a Macro lens, I looked into all the different possibilities available, and realised that, because the difference between a 50mm regular and a 50mm Macro is so little (IMHO), and the FA50 can already focus a very close distances, I should have bought a longer lens. (BTW L...
Posted by nathanever82 on 09/09/2009 - 11:41
