Search results for 'back focus' - page 2013
Colour Management
Do you have the Srgb or Argb colourspace set in Photoshop.....using Argb can produce lack lustre colours on printers that can't cope with the wider gamut....best bet is to use an all Srgb workflow unless you have a high-end printer. That's not quite true ;) If you don't understand colour management...
Posted by MattMatic on 22/07/2009 - 12:00
Colour Management
Do you have the Srgb or Argb colourspace set in Photoshop.....using Argb can produce lack lustre colours on printers that can't cope with the wider gamut....best bet is to use an all Srgb workflow unless you have a high-end printer. That's not quite true ;) If you don't understand colour management...
Posted by simonkit on 22/07/2009 - 17:39
Focus issue - anyone near to Oxfordshire ?
My K10D seems to never focus properly at distance. I have 300mm / 350mm / 500mm lenses, and i get blurred pics with all of them. And thats with a tripod and remote cable release, so that i eliminated user shake. If i switch to my Macro lens - a Panagor 90mm true 1:1 - i get nice sharp pics. I...
Posted by PierroJ on 23/07/2009 - 01:30
Focus issue - anyone near to Oxfordshire ?
Well I'll be in High Wycombe late September but I'd be surprised if you can't get some help before then. I'll assume that, given those focal lengths, these are manual focus lenses. Have you adjusted your viewfinder dioptre correctly? Do you wear glasses when using your camera? Do you get the...
Posted by Mannesty on 23/07/2009 - 07:46
Focus issue - anyone near to Oxfordshire ?
Any chance you can post some pictures? We would be able to check that it's focussing problems and nothing else.
Posted by greynolds999 on 23/07/2009 - 08:30
Focus issue - anyone near to Oxfordshire ?
Hi guys - yes, all lenses are manual. I have dioptre adjustment sorted, but i also used ' snap-in-focus ' to make sure my eyes were not letting me down. No difference. Now then, i was under the impression that SR is disabled when using a cable release, because the camera brain assumes you're using...
Posted by PierroJ on 23/07/2009 - 10:34
Focus issue - anyone near to Oxfordshire ?
I have 300mm / 350mm / 500mm lenses, and i get blurred pics with all of them. Who are the makers of these lenses?
Posted by Mannesty on 23/07/2009 - 10:39
Focus issue - anyone near to Oxfordshire ?
The 300mm is a Vivitar 100-300 constant F5, the 350mm is a Tamron 70-350mm constant F4.5, and the 500 is a Pentacon 500mm F5.6. I have also have / tried my Vivitar wide angle 19mm, and same problem. Its only close work where focus seems to be sharp
Posted by PierroJ on 23/07/2009 - 10:59
Focus issue - anyone near to Oxfordshire ?
Are these lenses capable of producing sharp images at the maximum zoom range? What aperture setting are you using. I have no doubt at all that images taken at the long end of the zoom range with a wide open aperture, will be soft, possibly very soft.
Posted by Mannesty on 23/07/2009 - 11:10
Focus issue - anyone near to Oxfordshire ?
Are these lenses old M42 mount lenses on an adaptor to fit the KaF mount?. It sounds like the adaptor you are using is like the one I have whereby you lose the ability to get infinity focus..... a newer 'slimmer' adaptor will aparently fix this issue easily. (would also explain why the macro at clos...
Posted by Telstar on 23/07/2009 - 11:10
Focus issue - anyone near to Oxfordshire ?
Hiya - no, only the Pentacon is M42. The Viv is a K mount, and the Tamron is an Adaptall. Also, the little Viv 19mm W/A is K mount, and since W/A lenses take in a lot of distance, its pretty much the same outcome as the Teles, as i mentioned. It just seems that any pics where distance is in...
Posted by PierroJ on 23/07/2009 - 11:17
Focus issue - anyone near to Oxfordshire ?
Here's a tele shot of a fixed object, screwed to a wall, so no problem with movement of the subject. Tripod, and remote release. I can vouch for all my teles producing photos like this, saving me the need to post a photo of each of the lenses http://img.photobucket.com/albums/v175/slapper/K10D%2...
Posted by PierroJ on 23/07/2009 - 11:37
Focus issue - anyone near to Oxfordshire ?
Is this photo a crop? I assume it is from the strange dimensions of it. What is the Exif?
Posted by Gwyn on 23/07/2009 - 11:41
Focus issue - anyone near to Oxfordshire ?
Some close up/macro http://img.photobucket.com/albums/v175/slapper/landscape/GeraniumBudB.jpg http://img.photobucket.com/albums/v175/slapper/landscape/BigPoppyHead.jpg
Posted by PierroJ on 23/07/2009 - 11:42
Focus issue - anyone near to Oxfordshire ?
Is this photo a crop? I assume it is from the strange dimensions of it. What is the Exif? Yes, its a crop. 350mm - 1/400th - F4.5 - ISO 400 - Spot Meter
Posted by PierroJ on 23/07/2009 - 11:45
Focus issue - anyone near to Oxfordshire ?
For me, this is not an issue with focus but looks like the lens is soft. Can you take some shots focussing at various distances. This may help to clarify.
Posted by greynolds999 on 23/07/2009 - 11:47
Focus issue - anyone near to Oxfordshire ?
Is this photo a crop? I assume it is from the strange dimensions of it. What is the Exif? Yes, its a crop. 350mm - 1/400th - F4.5 - ISO 400 - Spot Meter That looks like the worst possible scenario for any long zoom lens. Maximum zoom + maximum aperture = soft images (unless you pay a lot of money ...
Posted by Mannesty on 23/07/2009 - 11:48
Focus issue - anyone near to Oxfordshire ?
Why 1/400th at f4.5 if it is on a tripod and the subject is static? It doesn't make sense to use those settings unless you want bad results. Close the aperture down to f11 or f16, lengthen the shutter speed, and take the same shot again.
Posted by Mannesty on 23/07/2009 - 11:51
Focus issue - anyone near to Oxfordshire ?
May I suggest you also replicate your test by shooting at a wall diagonally focussing on a mark you can recognise in the photo (chalk?) then we could see if any part is in focus. Personally I think the the floodlight looks soft not out of focus. Mike
Posted by mikew on 23/07/2009 - 12:16
Focus issue - anyone near to Oxfordshire ?
OK - here's the original image, but i had to compress this to under half size, because Photobucket allows only a Max of 1mb. This was about 2.5mb to start with. http://img.photobucket.com/albums/v175/slapper/K10D%20test/BlurLampORIG.jpg I'll take some shots now, using F11 @ 350mm and F16 @ 250...
Posted by PierroJ on 23/07/2009 - 12:39
