Search results for 'back focus' - page 983
Is my 40mm backfocusing
The reason we have lens calibration is down to the manufacturing tolerances used in the lens mount, both on the camera side and lens side. The tolerances are very fine but slight variations cause a shift in focus point with different lens/camera combinations. I had a link to an article somewhere I'l...
Posted by johnwhit on 11/07/2011 - 07:07
Lenses up to 300mm
Tamron AF 70-300mm VC USD would be the ideal lens if they ever produced it in Pentax fitting, good review here: http://www.photozone.de/canon-eos/592-tamron70300f456vceosapsc Other than that DA*300/4 or DA*60-250/4 but they're a little on the heavy side IMHO I started a poll here with limit...
Posted by johnwhit on 11/07/2011 - 14:03
Lenses up to 300mm
It works better on the K-5 than on previous DSLRs such as the K20D. There is far less hunting. Also the DA version has Quick Shift, which does help to fine tune the AF when required. My impression, watching others focus with other makes of similarly priced lenses, is that it's the best option wit...
Posted by johnriley on 11/07/2011 - 14:28
Lenses up to 300mm
It works better on the K-5 than on previous DSLRs such as the K20D. There is far less hunting. Also the DA version has Quick Shift, which does help to fine tune the AF when required. My impression, watching others focus with other makes of similarly priced lenses, is that it's the best option wit...
Posted by RobE17 on 11/07/2011 - 14:39
Lenses up to 300mm
Sorry, no offence meant, I'm sure the Sigma DG IS HSM 150 - 500mm is a great lens and more than up to the job. It's just that I believe Rob was looking for the same kind of lens I am: Reliable silent AF Full time manual focus Up to 300mm reach Not too big and heavy, for the times you don't wa...
Posted by johnwhit on 11/07/2011 - 21:22
Lenses up to 300mm
It's just that I believe Rob was looking for the same kind of lens I am: Reliable silent AF Full time manual focus Up to 300mm reach Not too big and heavy, for the times you don't want or can't accomodate the extra burden. How about the new Tamron AF 70-300mm VC USD ?
Posted by Mike-P on 11/07/2011 - 21:26
Lenses up to 300mm
Sorry, no offence meant ... None taken. When it comes to choosing, I guess a compromise is inevitable if IQ and weight are given equal consideration. My choice is always IQ first. If it's too heavy, get somebody else to carry it :lol: Not forgetting reliability..... 10 minutes after taking the 60...
Posted by Pwynnej on 11/07/2011 - 21:49
Lenses up to 300mm
my colleague sent a text: "I need a bigger suitcase!" after picking up the 100-300 :D I don't see that there's a light and effective way to get past 300. The Tokina 80-400 is OK with focus speed, as is the tammy 18-250 (and I'll compare again a siggy 100-300, Tamron 18-250 and 70-200 and original 5...
Posted by bretti_kivi on 11/07/2011 - 21:59
Lenses up to 300mm
This appears to be a good thread to ask the following. At the moment I have the K5 18-55, FA28/2.8 AL, DA55/1.4, and recently a Tamron 90mm macro. I would like a 12-24 or 10-20, but this can wait, what I feel the need for is something upto 300mm. Would I be completely off track buying a Zeiss 300...
Posted by trickletreat on 14/07/2011 - 11:35
Lenses up to 300mm
Think I've settled on wanting the DA* 300mm. Going to try and give one a go at SRS within the next week. And now I'm thinking of not getting a telephoto lens of that length and getting the 77mm F1.8 Limited instead. Can't make my bloody mind up:D Sold the K7 today and almost bought the 77 on a whim ...
Posted by Frogfish on 14/07/2011 - 13:58
Lenses up to 300mm
[quote:3496ace15f="richardhurst"]Think I've settled on wanting the DA* 300mm. Going to try and give one a go at SRS within the next week. And now I'm thinking of not getting a telephoto lens of that length and getting the 77mm F1.8 Limited instead. Can't make my bloody mind up:D Sold the K7 today an...
Posted by richardhurst on 14/07/2011 - 13:59
Lenses up to 300mm
[quote:3496ace15f="richardhurst"][quote:3496ace15f="richardhurst"]Think I've settled on wanting the DA* 300mm. Going to try and give one a go at SRS within the next week. And now I'm thinking of not getting a telephoto lens of that length and getting the 77mm F1.8 Limited instead. Can't make my bloo...
Posted by Frogfish on 14/07/2011 - 14:00
Lenses up to 300mm
[quote:3496ace15f="Frogfish"][quote:3496ace15f="richardhurst"][quote:3496ace15f="richardhurst"]Think I've settled on wanting the DA* 300mm. Going to try and give one a go at SRS within the next week. And now I'm thinking of not getting a telephoto lens of that length and getting the 77mm F1.8 Limite...
Posted by richardhurst on 14/07/2011 - 14:02
Lenses up to 300mm
£778 ?!! Wow - guess I should go back a snap up a 77 (even if it is the black version).
Posted by Frogfish on 14/07/2011 - 14:08
Lenses up to 300mm
You should be taking orders, Kevin. When are you coming back to the UK? :twisted::twisted:
Posted by Pentaxophile on 14/07/2011 - 14:15
Lenses up to 300mm
You should be taking orders, Kevin. When are you coming back to the UK? :twisted::twisted: Ha ha - I'll let you know when I do (once every 3 or 4 years) - next trip is 2013 as 2012 we are off to NZ to visit my sister (I've already taken one order for a K5) !
Posted by Frogfish on 14/07/2011 - 14:25
Lenses up to 300mm
You should be taking orders, Kevin. When are you coming back to the UK? :twisted::twisted: 487 pounds in Australia (from the USA) and no import duty as below AUS $1000. So truth be told it's probably 200 pounds ex-works. Best regards
Posted by K10D on 14/07/2011 - 14:37
Lenses up to 300mm
Coming back to the original subject... I tried both 55-300 and 200/2,8, and in the end I preferred the prime because of its excellent IQ that gave me the opportunity of heavy cropping. The 200/2,8 was „wide” enough to cover all relevant action, while it was „long” enough to bring the planes quite...
Posted by KZ on 17/07/2011 - 06:55
The one that got away
I guess we all have stories of "the one that got away" on ebay. I spotted an S-M-C Takumar 20mm f/4.5 where the owner said: with Pentax bayonet fitting as used on my K1000 camera... A scarce lens which unfortunately has been forced and the aperture/exposure meter link no longer works. Both rings ...
Posted by womble on 11/07/2011 - 21:11
Broken Sigma 28-300 "Lense"
It's definitely worth the time, assuming you got it cheaply enough. I will say though that AF zooms are seriously complicated - I've only managed to repair one so far and that was (thankfully) a simple matter of unscrewing the front element and cleaning the inside surface of it. I did have a 28-70mm...
Posted by Dangermouse on 12/07/2011 - 15:45
