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Replied in Could be because it's a Sigma...
Hi Jim! Thank you for the reply!
Actually the optics of my lens is very good however it had problems with its electronics. Luckily the main panel was changed and now I have no problems with it....
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Replied in Sigma 10-20 F4-5.6 focusing on 450D
Hi Greg, thanks for the reply!
I just got back the lens from the service. The error was caused by a strange kind of front focusing which increased with subject distance. It means that on 50cm it...
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Replied in Sigma 10-20 F4-5.6 focusing on 450D
Now, the lens is at the service (with the body) for calibration. I'm going for it on Monday and it'll turn out if the focus can be calibrated properly.
It costs as much as sending would cost to...
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Replied in Sigma 10-20 F4-5.6 focusing on 450D
Hi guys! Thank you for the replies!
I was at the local shop yesterday and after a brief examination of the issue they said that the source of the problem is definitely the lens and its focus...
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Replied in Depends on your definition of "myth".
Paul and WilbaW, thank you both!
I don't know what is the last act of the system when focusing (move, check or command) but I think when my Canon (kit) lenses work without any problems then a...
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Replied in Could be because it's a Sigma...
Hi!
Yes, when I turn the focus ring to a bit further distance the subject gets into focus. Without this it is out of focus anyway.
Yes, tried from both directions, the beam is on in the same...
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Replied in Could be because it's a Sigma...
Hi Paul! Thanks for the reply!
So you mean that this is what to be expected from third party (uwa) lenses? Can it be simply a bad copy or the af of my 450D can't really handle the situation -...
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Created thread Sigma 10-20 F4-5.6 focusing on 450D
Hello Everyone!
I'd like to know your opinion on the followings:
I've recently bought a Sigma 10-20 f4-5.6 EX lens for my EOS 450D camera. One can easily find threads of front/backfocus...
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Commented on Just Posted: Olympus OM-D E-M5 test samples news story
As I know DPR studio samples were seldom about depth of field comparison so obviously I was referring to iso performace. About depth of field: DOF advantage (large vs. shallow) depends mainly on...
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Commented on Just Posted: Olympus OM-D E-M5 test samples news story
The APS-C - 43 gap is now closed. And everyone lives happily ever after :) Good job, Oly!
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Commented on dpreview.com gets mobile news story
A long-awaited addition. Thank you and keep up the good work!
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Commented on Just Posted: Nikon D800 hands-on preview news story
It certainly will be a very good camera but for me the design is a bit Canon-ish. This isn't a problem just found it interesting. :) It started with the D5100 anyway.
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Commented on Canon EOS-1D X professional DSLR announcement and overview news story
Oh, you're right, from the specs of course. :)
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Commented on Canon EOS-1D X professional DSLR announcement and overview news story
This is brutal! I can't see any weak points (obviously it's not for high MP studio work). Congrats Canon!
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Commented on Sigma Germany announces SD1 Wood Edition with burl veneer news story
LOL! Yeah, it wood. :D
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Commented on Hands-on images from the Nikon 1 launch, including mock-up lenses news story
For me the design looks like Nikon was in a hurry and they released a prototype/development phase camera. This (body) design simply cannot be a finished one..
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Commented on Kenko-Tokina launches NDX variable neutral density filter news story
Price is one thing but quality is an other.. I have a ND filter from that 'Green L' brand from ebay and to tell the truth it is awful. I don't have huge expectations but that filter ruins the...
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Commented on iPhone video enhanced by rolling shutter effect news story
Yes, I know about the effect in cameras but there are differences between the two cases we talked about: - the article is about _video_ recording, you mentiones _still_images_ - the effect is...
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Commented on iPhone video enhanced by rolling shutter effect news story
This 'effect' is funny. :) The other funny thing is if this was discovered in some other product it'd be a serious engineering mistake. But since it is in the iPhone this is fun and a killer...
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Commented on Pentax Q small-sensor mirrorless camera announced and previewed news story
"The Quick Dial on the front of the camera provides quick access to one of four special features that might otherwise be lost in the menu system somewhere. It also adds to the camera's retro look,...
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