Search results for 'back focus' - page 1048
Sigma 105mm F2.8 DG EX Macro - Any Opinions?
Hi David, very nice lens. I think all the insect shots in my gallery are taken with this along with one or two of the flower shots. Very sharp as per most macro lenses. Dof can be tiny so composition is crucial. Will compliment your 50 very well. The screw in hood can be annoying but for th...
Posted by carmagw on 30/05/2012 - 21:39
Sigma 105mm F2.8 DG EX Macro - Any Opinions?
I've just got one in the last weekish. I have the 50mm version also. I'm finding it to be a focus noisey hunter, the 50 can be also. The working distance is usefull but its taking some getting used to!! I find myself moving meself back n forwards as mentioned elsewhere in the thread. Iq is not in qu...
Posted by bettyswolloks on 01/06/2012 - 10:05
Sigma 105mm F2.8 DG EX Macro - Any Opinions?
I've just got one in the last weekish. I have the 50mm version also. I'm finding it to be a focus noisey hunter, the 50 can be also. The working distance is usefull but its taking some getting used to!! I find myself moving meself back n forwards as mentioned elsewhere in the thread. Iq is not in qu...
Posted by davidstorm on 01/06/2012 - 21:26
doubts about Tamron 17-50 F2.8 on K-5
Any other suggestions? Go back to a Pentax lens. Any early SDM issues should be OK by now. The 18-135mm is a superb alternative general purpose lens, using an almost silent DC motor.
Posted by johnriley on 01/06/2012 - 09:13
doubts about Tamron 17-50 F2.8 on K-5
I trust you have tried focus adjustment? My Tamron is as sharp as anything else I have, including primes. It is much sharper and faster than the 18-135; apples and oranges.
Posted by Pentaxophile on 01/06/2012 - 09:50
doubts about Tamron 17-50 F2.8 on K-5
I can't say my Tamron 17-50 has been entirely without issues, but sharpness sure ain't one of them. The sharpness really shouldn't be an issue. Most of the reviews on the internet concur that this is one of the sharpest zooms around, and absolutely stellar for its price point. If you think it's p...
Posted by MarkTaylor on 06/06/2012 - 19:42
A question on edge sharpness of lenses
Telecentric first. Especially with wide angle lenses, the light exiting from the rear element can be quite diverged, so the rays hit the film at an oblique angle. This is fine for film but digital sensors have each pixel sunk slightly in a pit. It is much better if the light rays are parallel and fa...
Posted by johnriley on 03/06/2012 - 14:26
ist ds wide angle lens
lets get some terminology correct, the 52mm you refer to is the size of filter that fits the lens and nothing at all to do with the lens being wide or a telephoto. 18mm to 55mm is a wide angle zoom and the 75 to 300 is a telephoto zoom lens, I would have thought that a range of 18mm to 300mm wou...
Posted by gartmore on 04/06/2012 - 14:08
Is DA* 60-250mm any good for sport ?
Yes there right nest to the rocking horse poo.:D I sold mine a while back and there was one on Ebay a week ago so they do come up. Saying that for what I got for mine I managed to buy a brand new Canon 50D and the same lens in Canon mount. Madness, but shows how sought after it is in Pentax mount...
Posted by Mike-P on 04/06/2012 - 21:14
Pentax DAL 55-300 new part needed
I am glad they could help. I have found Johnsons Photopia very helpful in the past. They are good at replying promptly to emails and they do ring you back when they say they will.
Posted by helios on 06/06/2012 - 16:02
50-200 - An Underrated Lens?
same thoughts also in my opinion quicker to focus than 55-300 (AF that is ) and MUCH better for burst shots of moving things like kids sledging, cars etc (in terms of AF accuracy) I regret selling my metal mount version :( oh and so small!
Posted by DanielH on 05/06/2012 - 21:33
50-200 - An Underrated Lens?
I have the Samsung version, and if the others had to go I would happily got back to using it with the 18-55 kit lens only. These to are fantastic quality and very light travel companions with a great range, the 50-200 was my favorite of the two.
Posted by Dodge69 on 11/06/2012 - 23:59
Are these M42 lenses worth bringing back?
Hi all, I am in the process of clearing my fathers house in Australia. There are a number of interesting M42 lenses I have found and I wanted to see if anyone here knew if they are worth bringing back to the UK for use or sale. I cannot mount them at the moment. A couple of them are ones i have neve...
Posted by ambient housewife on 21/06/2012 - 08:14
Are these M42 lenses worth bringing back?
Hi, If you intend to use them, bring them back and sell off those you would not be using over there, Regards Oso
Posted by Oso on 21/06/2012 - 08:47
Are these M42 lenses worth bringing back?
Going from my limited experience and research I'd say the 2 Helios lenses are probably worth bringing back to use or sell.
Posted by Garnett on 21/06/2012 - 13:21
Are these M42 lenses worth bringing back?
The Hanimar is a budget version of a budget lens range...the ones that were better were marked Hanimex. I should imagine quite poor on digital, but for portraits who knows, could be great. The Helios lenses are crude but effective and might be worth trying out. The Duo-Tamron looks interesting...
Posted by johnriley on 21/06/2012 - 13:51
Are these M42 lenses worth bringing back?
I had a Hanimex 135mm f2.8 in K-mount... It was truly awful... I didn't even try to sell it on, just binned it to save you all from wasting your pennies on it...
Posted by DaveHolmes on 21/06/2012 - 14:49
Are these M42 lenses worth bringing back?
Thanks guys, that has helped a bit, I think I know which ones I would like to try out now. Luggage capacity is becoming the deciding factor, so I think the Petri is staying here. I will bring back the more interesting ones and try them out I think.
Posted by ambient housewife on 21/06/2012 - 22:39
Are these M42 lenses worth bringing back?
If luggage capacity is becoming a factor you could always send some of your clothes back by post to make room for important stuff :)
Posted by petrochemist on 21/06/2012 - 23:12
Are these M42 lenses worth bringing back?
Actually I was thinking about just dumping the clothes, except that I need them as packing :roll: . Postage is expensive here now as well.
Posted by ambient housewife on 22/06/2012 - 21:59
