Search results for 'back focus' - page 1100
teleconverters
I've done a few more tests outside today (Cloudy EV 11) to see how far in front of the subject the 55-300mm lens at 300mm on a K-5 can be set on the focus ring so that the camera goes straight to the subject without winding back to min. focus and then out again. It worked out as follows. Subj...
Posted by Algernon on 09/08/2013 - 14:36
teleconverters
The main way of improving any telephoto is holding it very steady and your shoulder pod will help a lot there. That's why a lot of people complain that their tele's are soft at 300mm when it's actually camera shake. I'm convinced that 2x TC's are better than they seem. Even with a tripod it s...
Posted by Algernon on 11/08/2013 - 12:27
DA* motor failure rate
2 of my 3 SDM lenses have failed The 60-250 failed within a year of purchase and fixed on warranty - it was thought this lens was immune to the SDM problems, SRS were surprised but fixed - it's had a bit of an episode since, but fixed with a jeweller's screwdriver - lens came back better than new...
Posted by ilovesaabs on 06/08/2013 - 14:03
DA* motor failure rate
Drat, I thought, another £180. Really ... you honestly thought Drat ? I think not :lol: I had to use family friendly terminology, otherwise I'd be stopped by his Rileyness...you probably heard me cursing, was in your neck of the woods (well, Hampshire:roll:).....actually, since I couldn't manu...
Posted by ilovesaabs on 12/08/2013 - 15:50
DA* motor failure rate
I regularly put my DA* lenses on a AF film body to 'exercise' the screw drive mechanism. Then again I turn aperture rings and focusing barrels on all my lenses every month. I also make a point of priming and firing shutters on all my cameras I am sire I was told that it was the right thing to do ...
Posted by stevejcoe on 12/08/2013 - 16:56
DA* motor failure rate
My DA* 16-50mm was dead when I mounted it on the K-5II a couple of weeks ago (first time in probably 6 months or more). Couple of manual turns of the focus ring and it soon came back to life.
Posted by Mike-P on 12/08/2013 - 17:12
DA* motor failure rate
I'm not saying it's a bad idea, infact I have asked for it myself a couple of times but the simple fact is the only reasons you would need to have SDM disabled are (a) SDM motor failure (b) So you can use screwdrive to get faster focus speed. In both cases you are saying SDM is not fit for purpos...
Posted by Mike-P on 12/08/2013 - 21:48
Help required for a purchase
I have a little photoshoot next month that involves moving objects in low light situations. So I need a fast lens. Must be auto focus, as I have a 50mm 1.7 manual but find it difficult to keep refocusing on moving subjects. Im on a limited budget of £300 and under. So i'm mainly looking at the DA-50...
Posted by stub on 09/08/2013 - 11:47
Help required for a purchase
The da has great contrast and like the da35 has great sharpness. The 1.4 was slightly slower ti focus i guess due to a larger focus throw.
Posted by cabstar on 09/08/2013 - 22:09
Pricing on the DA 50mm f1.8 prime?
Hi all, I've got an older manual focus 50mm prime. It is the f1.7 version and has an A setting. It's been 'de clicked' so the aperture ring travels easily, but it's now dropping out of the A setting too easily and this annoys the camera a lot, and me!) I'm considering upgrading to the plasti...
Posted by richandfleur on 10/08/2013 - 07:05
Pricing on the DA 50mm f1.8 prime?
Actually, whilst I'm at it... Does anyone know if there's a common fault with the older Pentax-A manual focus lenses? Mine won't stay in the A setting, and when it moves even slightly away from this the camera has to stop and rethink things. Is this a common issue? And is there an easy fix...
Posted by richandfleur on 11/08/2013 - 21:21
Pricing on the DA 50mm f1.8 prime?
Some early A series lenses were prone to failure of the aperture ring, but it isn't a general problem. I have only ever had one that failed and it was a very early SMC Pentax-A 50mm f/1.7 - the aperture mechanism fell apart. Unfortunately I tried to fix it and was rewarded by a spray of springs a...
Posted by johnriley on 11/08/2013 - 21:38
Pricing on the DA 50mm f1.8 prime?
Ha, sounds like an amusing story there John! My aperture ring works fine, it's just it doesn't lock into the A setting any more. More specifically there is a very narrow band with which it works. If it slips out of that sweet spot the camera detects it as being a manual lens and I have to lock ...
Posted by richandfleur on 11/08/2013 - 22:00
Pricing on the DA 50mm f1.8 prime?
Some early A series lenses were prone to failure of the aperture ring, but it isn't a general problem. I have only ever had one that failed and it was a very early SMC Pentax-A 50mm f/1.7 - the aperture mechanism fell apart. Unfortunately I tried to fix it and was rewarded by a spray of springs a...
Posted by cabstar on 12/08/2013 - 00:56
Pricing on the DA 50mm f1.8 prime?
I just had a quick re look at my lens. The behaviour mine is exhibiting is that you have to press the small black button/rod to move the selection to the A setting. That's all normal, however mine is then very freely moving back out of the A mode. When this happens you lose the likes of live vi...
Posted by richandfleur on 12/08/2013 - 09:29
Compare wide lenses
[quote:3496ace15f="vic cross"]My experience with the colors of Tamron is bad, actually very bad. Yet you list the Tamron 10-24 as one of your top two choices? :D I had the Sigma 10-20 for a long time, and the DA15mm for a long time. The Sigma was very nice, perfectly sharp enough across the whole...
Posted by Pentaxophile on 11/08/2013 - 10:38
Compare wide lenses
[quote:3496ace15f="vic cross"]My experience with the colors of Tamron is bad, actually very bad. Yet you list the Tamron 10-24 as one of your top two choices? :D I had the Sigma 10-20 for a long time, and the DA15mm for a long time. The Sigma was very nice, perfectly sharp enough across the whole...
Posted by ronyzmbow on 11/08/2013 - 10:44
M42: Am I missing something?
Since I came back to the fold (I wasn't unfaithful just abstentious!) one of the greatest pleasures I've had is using my SMC M 50 1.7 on my K30. Yes, its harder than the lovely 18-135WR. Yes, I get lots more hits to the recycle bin but somehow its just great when one comes good... and as for the ta...
Posted by K30git on 11/08/2013 - 11:54
M42: Am I missing something?
As long as you use the genuine Pentax adapter there shouldn't be any issues. Non-genuine adapters may not allow infinity focus (they must be flush with the bayonet mount for it to work properly). Opinion on here differs as to whether non-genuine adapters are a good idea, I personally will only use t...
Posted by johnha on 11/08/2013 - 12:19
M42: Am I missing something?
So long as you are comfortable working totally manually - in my experience there is no issue in using M42 lenses - so long as you have a decent adapter - preferably a Pentax original - which are a bit pricey or one that fits flush and allows for focus to infinity. There is some very good old M42...
Posted by fritzthedog on 11/08/2013 - 12:24
