Search results for 'back focus' - page 1074
Sigma EX DG Macro 24-70mm f/2.8 Lens
I have one, had it for about 10 years. After much use it needs a full on service, as currently it is back focusing badly, and I have to use the manual focus ring. Quoted £85 to have a service, which is not bad considering the use and age of it. Apart from that, it is a big heavy brute but with won...
Posted by Offertonhatter on 23/01/2013 - 22:56
Sigma EX DG Macro 24-70mm f/2.8 Lens
I have one I bought one used over Christmas. I want to try a reasonable quality fast zoom as an alternative to primes for low-light portraits. I'd read a lot of love for the Tamron 17-50/2.8 over on the American forum but that struck me as too short for my purpose and 24-70/2.8 seemed the better ch...
Posted by elfer on 24/01/2013 - 10:49
Sigma EX DG Macro 24-70mm f/2.8 Lens
I've got the non-macro version and really like it. It's sharp, and the colours and rendering aren't bad (a bit cooler than Pentax lenses and bokeh is good for a zoom). I find it works really well as an outdoor walk-around lens. My copy has been well used, but the AF is spot on on my K-5 Good...
Posted by sorted78 on 25/01/2013 - 07:51
Alright, who bought it!
I had a look in the Manchester branch of LCE, and lo and behold, the only secondhand Pentax lens in the window was the FA 43mm F1.9 Limited in Silver. I was VERY VERY tempted but I had to resist for one big reason, I need a new washing machine :cry: However, just got back from the theatre, and c...
Posted by Offertonhatter on 23/01/2013 - 22:32
FA 31 Limited - why is it so good?
If I had paid in excess of £1000 for a 31mm lens - not only would I expect it to contain pixie dust - I would expect it to go out by itself and bring me back some stunning images. Think I shall be sticking to the 35Ltd until they legalise selling children on ebay :D:D Carl
Posted by fritzthedog on 25/01/2013 - 10:04
FA 31 Limited - why is it so good?
I absolutely agree Chris - we all have differing taste. However it was your comment that ".... higher colour contrast makes them much more 3D than the German lenses" that I would dispute. I've seen wonderful 3D rendering from many lenses, including Zeiss, e.g the ZE/F II 100/2, to name but one, is s...
Posted by screwdriver on 26/01/2013 - 15:21
FA 31 Limited - why is it so good?
Those early lpmm tests were marred in various ways, but of course the contrastier shot can be read as sharper. That's why everyone was so pleased when MTF lens testing was introduced, apart from few people understanding the mysterious graphs! I don't think everyone was pleased :lol: The staff on...
Posted by Algernon on 26/01/2013 - 15:44
FA 31 Limited - why is it so good?
I absolutely agree Chris - we all have differing taste. However it was your comment that ".... higher colour contrast makes them much more 3D than the German lenses" that I would dispute. I've seen wonderful 3D rendering from many lenses, including Zeiss, e.g the ZE/F II 100/2, to name but one, is s...
Posted by Frogfish on 26/01/2013 - 16:49
FA 31 Limited - why is it so good?
Jun Hirakawa designed the FA43 and FA77 (though not the FA31) so that they fully correct the astigmatic difference in both meridional and sagittal subject planes, while allowing small amounts of field curvature to remain. This means that sharpness is not as absolutely perfect as would otherwise be p...
Posted by rparmar on 31/01/2013 - 02:09
FA 31 Limited - why is it so good?
Nonetheless some lenses perform better than others in a technical sense, but it all depends on what the desired effect is as to whether a lens is "better". If you want soft focus, look for an old rubbish lens that's full of flare. If you want to reproduce documents, look for a macro lens. This is...
Posted by johnriley on 24/02/2013 - 10:48
FA 31 Limited - why is it so good?
I was wondering what it is about the Pentax-M 50mm F1.4 that you don't like John? I have this lens and find that although it's not as sharp as say a F1.7, it renders colours beautifully and produces very pleasing results. Harking back to the earlier posts in this thread, a few people have mentio...
Posted by davidstorm on 24/02/2013 - 11:03
Anybody used Harrow Technical for repair?
I have a Pentax-A 35mm 2.8 lens... The glass is nice and clean... No fungus... Aperture is snappy... But it won't focus... At all... Feels like the focus ring is un-connected... Loose.. Slack... Not right... Thinking Harrow Technical are my best bet... Hopefully won't cost more than £50 to repai...
Posted by DaveHolmes on 25/01/2013 - 00:12
Anybody used Harrow Technical for repair?
+1 for Alan he has just recalibrated my FA50 that ceased to lock focus at infinity, came back and is like a new lens £18, bargain of the year so far.
Posted by redbusa99 on 23/02/2013 - 11:08
new 55-300mm a bit sluggish
It winds the lens in from infinity... So set it beyond your subject before you press focus and it shouldn't have too far to move. If it misses it winds down to minimum focus and then back out again.
Posted by Algernon on 26/01/2013 - 11:51
new 55-300mm a bit sluggish
It winds the lens in from infinity... So set it beyond your subject before you press focus and it shouldn't have too far to move. If it misses it winds down to minimum focus and then back out again. That really does work well.
Posted by darkskies on 29/01/2013 - 16:43
new 55-300mm a bit sluggish
It winds the lens in from infinity... So set it beyond your subject before you press focus and it shouldn't have too far to move. If it misses it winds down to minimum focus and then back out again. That really does work well. Defo!
Posted by AndrewA on 29/01/2013 - 18:03
Close Up Lenses - Pentax S40
Here are some test shots that show close up lenses can be useful as simple devices for macro photography. Pentax 100mm D-FA Macro at f/16 shows good sharpness across the frame: At f/2.8 not so suitable for flat subjects: Add the CU lens and at f/16 we still get good sharpness across the ...
Posted by johnriley on 27/01/2013 - 12:32
Sigma Zoom Master
I bought a box of old MF lenses recently for a few £ - mainly just to get the adaptall II mount off one of them. 2 of the 3 lenses are excellent door stops but the 3rd one is in very nice condition in the original Sigma hard case. It is a manual focus Sigma zoom master f2.8-4 35-70mm MC. I ...
Posted by fritzthedog on 31/01/2013 - 12:29
Sigma Zoom Master
Thanks Brian - yes that's the one. Sounds as if it is well regarded and the sample images on that link look very good indeed. May have to have a little play with this one. It's been a while sine I used a manual focus lens - will do me good! Cheers Carl
Posted by fritzthedog on 31/01/2013 - 13:43
Old Lenses - Better Images?
I agree to some extent Dave, but also the quality of the glass must play a massive role in how the images turn out? As for ease of use, the lens that took the photo above is an absolute joy to focus, even in very dim light and I fid that I can get results as accurate, or more accurate than AF by us...
Posted by davidstorm on 31/01/2013 - 23:21
