Search results for 'back focus' - page 984
Lens For Sale - Sold - Bought Again
Last year I sold my PK Vivitar Komine 28mm f2.8 Close Focus, and also a PKA Vivitar Cosina 28mm f2.8, and missed them both, so earlier this year when I spotted a PKA Vivitar Komine 28/2.8 CF for a good price I snapped it up. I also kind of regret selling my Tamron 500mm as it was so small (compar...
Posted by thoughton on 12/07/2011 - 13:50
Lens For Sale - Sold - Bought Again
Interesting thought John... Tokina ATX 24-200: I partially regret selling this. It was a lovely performer on film, but never quite up to expectations on digital. In the end I sold it - and it went for a song on eBay :( But since Pentax improved the microlenses to adjust for edge effects and poor ...
Posted by MattMatic on 12/07/2011 - 14:03
Lens For Sale - Sold - Bought Again
I can't see me selling a lens I like, what would the point be? Buy some decent glass and keep it. Then again I do not buy extremely expensive lenses. So far the most I have ever spend on a lens is 420£ for a 12-24 Nikkor and that will be only superseded by the 50-135 when SRS bring them back in stoc...
Posted by vrapan on 12/07/2011 - 16:17
Close up filter
Has anyone ever successfully used one? I bought a 49mm +3 one from the Intro2020 eBay store and been trying it on the 50-200 WR lens, but I cannot get it to focus as all (AF or MF) - went up to f32 to get a wide dof as possible If I hand hold it in front of the sigma 10-20 it sort of works. ...
Posted by DaveN on 13/07/2011 - 15:25
Close up filter
You will have to get quite close. A set of CU filters usually is a +1, +2 and +4, in combination they can provide any value up to +7. A +3 on its own should work, maybe you are just not getting close enough. I would set the camera on MKF, selct the closest point of focus and then just move inw...
Posted by johnriley on 13/07/2011 - 15:56
Close up filter
I use a Raynox DCR 250 clip on macro lens- I usually use it on my SMC A 70-210- often at the longer end. Manual focus is essential- working distance approx. 4- 6ins, moving the camera rather than the focus ring. Quite a few of my macro shots in my portfolio are taken using this set up. Cheers, Gar...
Posted by Gary Hickin on 13/07/2011 - 16:03
Close up filter
the minimum focusing distance of the 50-200 is 1.1 m, so surely it won't focus closer than that? EDIT: it works! Moving the camera instead of fiddling with focus! Thanks guys
Posted by DaveN on 13/07/2011 - 16:05
Close up filter
the minimum focusing distance of the 50-200 is 1.1 m, so surely it won't focus closer than that? That's the whole point of a close up lens. It enables you to move closer. With the CU lens in position though you won't be able to focus very far away.
Posted by johnriley on 13/07/2011 - 16:31
Close up filter
+Dioptre closeup lenses / adapters change the focus distance of a camera lens. The host lens' focal length determines the amount of magnification. Cheap meniscus closeup lenses are not corrected for aberrations; corrected lenses like Raynox provide better images, but the cheap ones are fun, and usef...
Posted by RioRico on 14/07/2011 - 05:21
Sigma 150-500 F5.6-6.3 Confusion
From what I understand SRS have/had a few of the previous model remaining, these were the cheaper ones. I'm not sure what Sigma changed but the previous generation is absolutely fine, although I found that it struggled to lock focus at the 500mm end when I borrowed one a while ago. TBH for motor...
Posted by Dangermouse on 14/07/2011 - 15:28
Sigma 150-500 F5.6-6.3 Confusion
Thanks for all the replies and clarification chaps, the deed is done and I have got one arriving in the next couple of days for £599 :) Yes Matt, it's not particularly fast for motorsport, although I tend to shoot at quite low shutter speeds (1/60 to 1/125) and often manual focus too, so not too ...
Posted by Crossed-up on 14/07/2011 - 19:22
70mm Limited or DA* 50-135
The only downer with the 50-135 is the SDM IMO. OK, it's quiet, but it's far too slow, even on the K-5 Don't know if you can blame the SDM because the DA850-135 has quite a massive focus throw, around 240 degrees i believe, never measured it but you can manual focus the lens really well.
Posted by Anvh on 15/07/2011 - 17:52
70mm Limited or DA* 50-135
The only downer with the 50-135 is the SDM IMO. OK, it's quiet, but it's far too slow, even on the K-5 Don't know if you can blame the SDM because the DA850-135 has quite a massive focus throw, around 240 degrees i believe, never measured it but you can manual focus the lens really well. Is it reall...
Posted by vrapan on 15/07/2011 - 18:50
70mm Limited or DA* 50-135
I've seriously played with the DA*200 and the DA*300 and they were decent, certainly the DA*200 and the DA*16-50 is indeed quite fast and so is the DA40 and the kit lens but overall speaking pentax just don't make fast AF lenses but all of their lenses are quite good to manual focus though. I did m...
Posted by Anvh on 15/07/2011 - 20:04
70mm Limited or DA* 50-135
interesting read.....well even if DA*50-135 isn't most fast lens to focus, it still managed to get everything in focus quickly enough so i didn't lost any shot. to first query - i got DA*50-135 first but now ordered DA70 as discreet street lens. Haven't got it yet, but if I was able to choose only...
Posted by kingfisher on 15/07/2011 - 20:13
70mm Limited or DA* 50-135
The only downer with the 50-135 is the SDM IMO. OK, it's quiet, but it's far too slow, even on the K-5 Don't know if you can blame the SDM because the DA850-135 has quite a massive focus throw, around 240 degrees i believe, never measured it but you can manual focus the lens really well. I just had ...
Posted by Smeggypants on 15/07/2011 - 20:34
70mm Limited or DA* 50-135
I just had a look and the focal rotation on the 50-135 is about 120 degrees. I stand corrected then, but still like to use the manual focus of the lens though.
Posted by Anvh on 16/07/2011 - 18:17
70mm Limited or DA* 50-135
And the did is done. I got a 50-135 from SRS today, no time to play with it though (battery went dead as I was trying it in the store) and the weather is dreadful so it will have to wait for a little while! Feels very nice though and much lighter than the 50-150 just as I remembered when I Tried ...
Posted by vrapan on 20/07/2011 - 18:26
70mm Limited or DA* 50-135
Feels very nice though and much lighter than the 50-150 just as I remembered when I Tried it a few weeks back. I was interested enough by that comment (I must really be bored) to get both lenses out and weigh them. The Pentax is actually only 50 grams lighter than the Sigma and size wise there is ...
Posted by Mike-P on 20/07/2011 - 18:42
70mm Limited or DA* 50-135
Yes the Pentax hood is a lot more solid and heavier. Yeap D7k went on TP a couple weeks back, sold the 50-150 just yesterday is getting shipped tomorrow. I only have a D40 with a 35mm and a 17-50 Tamron. These are staying :)
Posted by vrapan on 20/07/2011 - 19:12
