Search results for 'back focus' - page 790
Valid point or not - lens sharpness
Feeb, Goggle is your friend but in general it's a much used and abused term relating to the treatment of out of focus objects. Look for Lilly's recent thread on the 21 ltd where I think you'll get an example of what's thought of as good bokeh. Mike
Posted by mikew on 26/06/2009 - 19:02
Back focus on my Pentax 16-50 DA* ?
Have I got back focus on my very expensive lens? I know there have been quality control issues with the Pentax 16-50 DA*. I bought this lens a few weeks ago and not really tested it until now. I was slightly worried when I first got it as I started missing focus points which I have not done before. ...
Posted by ericp on 26/06/2009 - 10:51
Back focus on my Pentax 16-50 DA* ?
It looks like it to me you can adjust it in the K10, never had a K10 but someone will tell you if you dont know.
Posted by ttk on 26/06/2009 - 10:58
Back focus on my Pentax 16-50 DA* ?
I thought the option to adjust was for the K20 or I had to have some oldr firmware in the K10? The focus problem is only with this lens though and I would rather get a good lens and avoid tampering with parts o my system that are not broken.
Posted by ericp on 26/06/2009 - 11:15
Back focus on my Pentax 16-50 DA* ?
eric When testing with the focus test charts you must use a tripod and daylight. Artificial light will give you false results. However, looking at your outside shots you may indeed have back focus. I recently got this lens and it is very accurate on AF, although can be a bit slow to achieve fo...
Posted by pschlute on 26/06/2009 - 11:42
Back focus on my Pentax 16-50 DA* ?
The first picture is with tripod and indoors so unnatural light. The second picture was taken outdoors though with tripod and remote control and both have come out more or less the same. It is very annoying as I have bought a few lenses and when I finally buy the best of the best from Pentax the...
Posted by ericp on 26/06/2009 - 12:40
Back focus on my Pentax 16-50 DA* ?
Which AF method were you using ... AF cenre-point or multi-point, and did you get the green hexagon focus confirmation with the outdoor shots ?
Posted by pschlute on 26/06/2009 - 13:21
Back focus on my Pentax 16-50 DA* ?
This isn't a quality control issue.
Posted by gartmore on 26/06/2009 - 13:34
Back focus on my Pentax 16-50 DA* ?
I'm using AF center point. I made sure I had the hexagon confirm a lock and I had AF with remote turned off in the menu so clicking the remote would not trigger another AF.
Posted by ericp on 26/06/2009 - 13:36
Back focus on my Pentax 16-50 DA* ?
I'm using AF center point. I made sure I had the hexagon confirm a lock and I had AF with remote turned off in the menu so clicking the remote would not trigger another AF. Well that sounds pretty conclusive that there is a focus issue with the lens then. Have you tried repeating the experiment ...f...
Posted by pschlute on 26/06/2009 - 13:46
Back focus on my Pentax 16-50 DA* ?
Hi eric i hope you get it sorted i remember i had the same problem with a sigma 18-50mm back focussing. At the time i only had two options send the lens back to the manufacturer or the place where i bought it from.SRS took it back and i asked for a credit note because i couldn't decide on another...
Posted by sanderscapes on 26/06/2009 - 14:00
Back focus on my Pentax 16-50 DA* ?
I'm using AF center point. I made sure I had the hexagon confirm a lock and I had AF with remote turned off in the menu so clicking the remote would not trigger another AF. Well that sounds pretty conclusive that there is a focus issue with the lens then. Have you tried repeating the experiment ...f...
Posted by ericp on 26/06/2009 - 14:23
Back focus on my Pentax 16-50 DA* ?
Well I would get it swapped for another then Eric. It is a shame because as I said above, I am very happy with mine, no focus errors at all.
Posted by pschlute on 26/06/2009 - 15:05
Back focus on my Pentax 16-50 DA* ?
I think I will have to. It is just a little bit annoying because of all the lenses I have bought, I have had not quality issues and they have been much cheaper than this one and most are not Pentax. I was hoping everything at Pentax glittered like gold :D Luckily I bought it at SRS so will make a...
Posted by ericp on 26/06/2009 - 15:35
Back focus on my Pentax 16-50 DA* ?
Mine backfocus ever so slightly but I don't use it that much and it was quite a good price on Ebay so I am prepared to wait until I buy either a cheap K20D or an expensive K-7.
Posted by Mike-P on 26/06/2009 - 15:59
Is the 16-50 Da a dud
I have just got the DA*16-50 and early indications are it is a very good lens. It did get a mixed review when it first came out from one website, and it is fair to say it obviously had quality control issues when first manufactured which have led to a more than average number of returns. However,...
Posted by pschlute on 26/06/2009 - 21:47
Is the 16-50 Da a dud
hi there everyone, sorry for the late reply. A great surprise to see everyone so involved in my query. Well, interestingly enough I have been out and given the lense a good test and the results are spectacular. Sharpness and tones are at pro level. My only criticism is the slight lag in focus, but o...
Posted by mattox on 06/07/2009 - 15:46
200-300 RANGE
Hi Deryn i have both the DA 55-300mm and the sigma 70-300mm both excellent lenses.But the sigma offers a macro function between 200-300mm. If i had to pick between the two it would be the sigma purely for its macro capabilities.:wink: A question about that. Sigma says the minimum focus is 150cm ...
Posted by Anvh on 27/06/2009 - 09:18
200-300 RANGE
In normal mode they focus the same but the Sigma have an Macro mode and that enables you to focus at 95cm so 55cm closer :) This wasn't on the Dutch site I was looking at, sorry :oops:
Posted by Anvh on 27/06/2009 - 15:37
200-300 RANGE
Hi! I'm using primarily my Pentax da 55-300. Very nice picture quality. At least mine is sometimes a bit hunty lens, but manual focus first before autofocus and that problem mostly solved. I'm using a protective Hoya Digital Pro filter, which might affect performance, haven't tried it without yet....
Posted by Tobio on 28/06/2009 - 23:48
