Search results for 'back focus' - page 2027
Can't get focus lock on
That's a real shame .. looks like they could have been a good set of pictures. I had the SIgma 17-70mm and it wasnt exactly the fastest of lenses but should have been fine with this.
Posted by Mike-P on 08/03/2010 - 16:53
Can't get focus lock on
in the first shot nothing seems to be in focus.did you have it on manual focus? my sigma is fine
Posted by royd63uk on 08/03/2010 - 17:20
Can't get focus lock on
What Autofocus mode are you using on the camera? I noticed that in your first shot you have two subjects of interest, both of which are blurred and both of which are not in the centre of your shot. Perhaps on this occassion your camera focused on the hills in the back ground. Also, both the motorcyl...
Posted by Johnnytheboy on 08/03/2010 - 17:32
Can't get focus lock on
Thanks for all the replies. Focus setting was AF-Center spot fixed .I see where your coming from about the camera might have been confused in the first shot ,but the other two no,most of the other shots taken were filling the view finder ,been shooting Mx for a while now ,my guess is it's the lens o...
Posted by melness on 08/03/2010 - 21:11
Can't get focus lock on
Have you checked the K10d/sigma combination for front and back focus. It's a known problem, have search in the forum.
Posted by bforbes on 08/03/2010 - 21:20
Can't get focus lock on
Have you checked the K10d/sigma combination for front and back focus. It's a known problem, have search in the forum. Trouble with that is that from the look of those pictures there is no focus point at all.
Posted by Mike-P on 08/03/2010 - 21:32
Can't get focus lock on
Have you checked the K10d/sigma combination for front and back focus. It's a known problem, have search in the forum. Trouble with that is that from the look of those pictures there is no focus point at all. I see your point.
Posted by bforbes on 08/03/2010 - 21:42
Can't get focus lock on
I did a practice session with my K10D in Spain a year or so ago using AF.C, centre focus and Sigma 70-200mm f2.8.
Posted by Mike-P on 08/03/2010 - 21:48
Can't get focus lock on
Yep used to have the sigg 70-200 when i had canon. The best combo i've used for mx to date was ,the K100D and siggy 24-70 f2.8 and the humble but very effective kit lens 18-55,was looking back at some last night cursing that i sold it .couple of examples . 1 http://picasaweb.google.co.uk/lh/phot...
Posted by melness on 09/03/2010 - 19:40
Can't get focus lock on
Maybe it's time to say farewell to the 17-70 you've now, it does not seem to be a good copy since your other shots are stunning!
Posted by Anvh on 09/03/2010 - 19:51
Can't get focus lock on
Maybe it's time to say farewell to the 17-70 you've now, it does not seem to be a good copy since your other shots are stunning! Stefan, those were done with a K100D .. not the K10D used on the first shots so still dont know if its the camera or lens.
Posted by Mike-P on 09/03/2010 - 19:53
Can't get focus lock on
Ah yes Mike, you're right ^^ From what I read out of the EXIF data from the K10D (bad) photos the focus seem to be on infinite so yes it didn't catch focus.
Posted by Anvh on 09/03/2010 - 19:57
Dark corner using a cpl
I've noticed whilst using a cpl on the Sigma 18-50 (72mm), that on certain shots the top left-hand corner is slightly darker. Whilst not very extreme, I'm guessing that this is caused by the cpl causing vignetting? I'm using a standard Kenko digital cpl. If this is the case, would a slimmer fi...
Posted by bychan on 09/03/2010 - 00:41
Dark corner using a cpl
Thanks for all your replies and advice, greatly appreciated. I imagine that if this were a dust problem then all images would be affected (been there as well); touch wood, as far as I can see at present the sensor seems clean. What I can now also add is that images taken without the cpl are cl...
Posted by bychan on 09/03/2010 - 23:42
Dark corner using a cpl
Glad you found the problem, slim filter would solve it. :) As I specified originally, the triangle is very small, and it has been suggested that it will be easily removed in PP (not sure how, crop perhaps). Oh no you clone it out, just like dolly the sheep :D Most software for photography has sp...
Posted by Anvh on 10/03/2010 - 00:16
Super-Takamur 50mm f/1.4
If you can leave it sit somewhere outside for a couple hours each day, it wiil clear better. Wrap tinfoil around the the thread end, and stand it so the sun shines down into the front lens. This bounces back more of the rays, and prevents a possible fire from light concentration. I usually check it ...
Posted by greyhoundman on 13/03/2010 - 16:02
Super-Takamur 50mm f/1.4
K mount to M42 adaptors are readily available. Make sure you get the sort that sits flush inside the throat of the camera as the ones with a flange stop the lens focusing to infinity. Genuine Pentax adaptors are now an insane price. Second hand ones are available on ebay. SRB-Griturn also make g...
Posted by womble on 09/05/2010 - 13:18
tamron 70-300 and polarising filter
Hi does anyone else have this lens and have difficulty getting it to focus on auto focus with a polarising filter on after about 200mm?
Posted by Glover on 15/03/2010 - 15:24
tamron 70-300 and polarising filter
I've got the same problem with the Pentax 75-300 when I attached a CPL. It would not focus at all so I just took it off.
Posted by Johnnytheboy on 17/08/2010 - 00:56
problem with pentax optio s12
hi all i have a optio s12 and have a problem which is,when i push button to switch off the camera the green led light stays on and i cant do anything with camera when this happens ie switch back on.i have to take battery out to solve problem it also does this when the camera switches its self off a...
Posted by joelecarp on 19/03/2010 - 20:54
