| Sign in: |
| Members log in here with your user name and password to access the your admin page and other special features. |
|
|
|
|
|| SportsShooter.com: Member Message Board
Seious sharpness issue's
Kay in t Veen, Photographer, Photo Editor
 |
Rotterdam | ZH | Netherlands | Posted: 8:49 AM on 07.18.10 |
->> hi all, i shoot some soccer yesterday.
shot with
1d mark III
400mm 2.8 IS
all my images did not seem to be sharp.
i shot at f/3.5 and f/4 with shutter around and above 1/2000
also i took time to focus well on a player before shooting so it can aquire good focus.
why the hell is everything unsharp. i tested the lens/body combi at home for back/front focus but everything seem to be fine.
what can it be. my body or lens? or just my skills ;)
i shot at JPEG, these are some raw images.
http://kayintveen.nl/test1.jpg
http://kayintveen.nl/test2.jpg |
|
Samuel Lewis, Photographer
|
Miami | FL | USA | Posted: 9:48 AM on 07.18.10 |
->> How were you supporting the lens? If nothing is sharp, it is possible that you're not keeping the lens/camera sufficiently stable. Also, did this problem occur with other bodies on the same lens, or just one body?
Finally, what were the weather conditions? I've encountered times when heat radiating off a field was sufficient to interfere when shooting long glass. |
|
Kay in t Veen, Photographer, Photo Editor
|
Rotterdam | ZH | Netherlands | Posted: 9:54 AM on 07.18.10 |
->> carbon monopod by gitzo.
at 1/2000 this seem to be more than sufficient.
further it was around 30 degrees. so warm but not HOT.
did not try another body on the 400mm.. |
|
Randy Abrams, Photographer
|
Bath | NY | US | Posted: 10:19 AM on 07.18.10 |
| ->> Can you check your focus point? Does Canon has software where you can check/verify your focus point? Also were you shooting single point or a dynamic (9-pt, 21-pt)? Last question would just be a double check that you didn't slip into AF-S instead of AF-C. I've done that before a couple of times by accident. |
|
Philip Johnson, Photographer
|
Jim Redman, Photo Editor, Photographer
|
Austin | TX | USA | Posted: 1:19 PM on 07.18.10 |
->> Hi Kay, I have had great success with these settings and have sent it to many of our photographers and have gotten so many OMG emails from most of them. Give it a try...
Here is a great link for focus setting in different shooting conditions. it is a must read. http://web.canon.jp/imaging/eosd/eos1dm3af.../index.html
Some very important custom functions are in C.FN III in the menu.
C,FN III - 3 = 0
C,FN III - 4 = 1
C,FN III - 5 = 1 (Very important to have Focus Search OFF) you already focus your camera with your thumb, no need to have the camera keep trying to search.
One really big difference maker is in the very first menu, picture style... set up User Def 1 and change the sharpening to one click under max. |
|
Mark Loundy, Photo Editor
|
San Jose | CA | USA | Posted: 2:55 PM on 07.18.10 |
->> Kay,
The images don't appear to be out of focus. It looks more like a general lens sharpness issue.
I looked at the grass in #2 and there is no really tack-sharp zone anywhere -- as would be expected with front or back focusing.
Is the lens clean (front and back?) When you take the lens off the camera and look through it do you see anything out of the ordinary?
--Mark |
|
Samuel Lewis, Photographer
|
Miami | FL | USA | Posted: 9:54 PM on 07.18.10 |
| ->> I would check the lens with another body, but if the lens works under other conditions, it may have to do with technique. As Mark indicated, it doesn't appear that anything was really sharp in the frame. Even with 1/2000, shooting technique can make a difference; movement can result in frames that look like nothing is in focus. |
|
Louis Lopez, Photographer
|
Fontana | CA | USA | Posted: 11:28 PM on 07.18.10 |
->> I may be wrong, but, the Canon Mark III is that not the camera that had all the out of focus issues??
You might try a search on Mark III and AF and see what comes up. |
|
David Seelig, Photographer
|
Hailey | ID | USA | Posted: 11:37 PM on 07.18.10 |
| ->> My 400 went out into s fot area when a lens element moved out of position. I agree check with another body if soft then send in the lens. |
|
Steve Violette, Photographer
|
Gulf Breeze | FL | USA | Posted: 9:21 AM on 07.22.10 |
->> Ok Kay - what did you come up with?
Steve |
|
Israel Shirk, Photographer, Assistant
|
Boise | ID | US | Posted: 10:38 AM on 07.22.10 |
->> It does look like the camera is front-focusing a little, though there's gotta be something else going on... I thought you were shooting with 7d's from your blog post!
Which edition of the 400 are you using? When was it last serviced by CPS? Usually (in the states...) you can send the body/lens combo in together and they'll calibrate them together. |
|
Mark Loundy, Photo Editor
|
San Jose | CA | USA | Posted: 4:11 PM on 07.22.10 |
->> Kay,
Another photographer mentioned to me that you might also check the filter insert. Also, many lenses perform better at intermediate f/stops. For example, an f/2.8 lens might be sharpest at f/5.6.
--Mark |
|
Return to --> Message Board Main Index
|