O.k. so when I turn it on it immediiately statrs
stuttering if I press the focus button it stops and focuses but it
won't take pictures. Most of the time the shake warning indicator is
visable. I don't really know what the shake warning indicates. The
problem persists un changed irregardless of whether anti shake is
switched on or off. Please help me I'm dying without my camera. Thanks
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Sure you did not switch to manual focus while testing the Tamron? Sure all settings are correct?
If the Tamron still auto focusses on you 7D, check the forums about this. I know Nikon sometimes messes up the firmware, when a non Nikon lens is used, but not on all camera's. And not with every firmware.
I don't know the 7D enough to check more details, but check everything about the AF settings. I can't imagine your lens did something wrong with the camera.
I'm afraid this camera does not have any possibility to do manual focus. Not with stills and for sure not with recording video.
The only thing to help you focus on a certain object, that is not in the centre of the frame, is the focus lock. You have to point at the object you want to focus on, then press focus lock and than you can choose the composition you want to shoot. Focus lock occurs when you press the shutter release button half.
For video, the manual only says put the rail on the film camera and press the shutter release button once. The video will be stopped after 12 seconds. (or when you press the button again.
That is all.
First off, try gently turning the focus ring on your lens while it is on auto focus mode (DO NOT force it). Sometimes a minor bump on the lens can cause the focus ring to come off the tracks. Try that and see if the lens start auto focusing again. I find that this solves the issues a lot of the time. If that doesn't give you any results then you'll need to take your lens to an authorized Canon service center for repairs. Hope this helps!
Hiram Photo Tech Repair Service 110 East 13th Street New York, NY 10003 212-673-8400
TTTTTTTTTTTTTTTTTTTTTTTTITf correct focus cannot be obtained
When the subject to be focused is not on the AF target mark (not positioned
in the center of the composition), you can use the following steps to obtain the
correct focus on the subject. This operation is referred to as "focus lock".
Determine the position of the subject after focusing (Focus Lock)
1 Press the power switch.
• The camera turns on in the shooting
• The lens extends and the monitor turns
• The orange lamp lights.
2 Turn the mode dial and select a
"Shooting mode" (P.36)
3 Position the AF target mark on
the subject you want to focus on.
• When shooting a hard-to-focus
subject, point the camera at an object
about the same distance away as the
Press the shutter button halfway
until the green lamp lights.
• When the green lamp lights steadily,
the focus and the exposure are locked.
• When the green lamp blinks, the focus
and exposure are not locked. Release
your finger from the shutter button, reposition
your subject and press the
shutter button halfway again.
5 Keeping the shutter button
pressed halfway, recompose
6 Press the shutter button fully.
Try the above, info from D-535, C-370 and X-450.
I can email you the complete manual if this works.
I don't know if I can help you. But I will try a guess. Some cameras focus on 1 point and it is not necessary the center. Maybe if you give your camera a point to focus on then keeping your fingers half cocked on the shutter shift the focus off-center to however you want to compose it, then click.
But if it was working properly before and then stopped working properly, did you lend your camera to someone, drop it or subject it to impact? I don't think anything is really wrong but I could be wrong. Have you checked the AF/MF button. Could someone may have accidentally pressed it?
If you are using the macro lens, did you check the camera's distance limits? I understand that the 7D actually focuses faster than the Canon EOS and Pentax. Canon and Pentax need to hunt that's why they take longer.
There are four focus modes: S-AF (Single auto focus), C-AF (Continuous auto focus), MF (Manual Focus), and S-AF/MF (Simultaneous mode).
(SINGLE Auto Focus): Focusing is performed once when the shutter button is pressed halfway.
C-AF (CONTINUOUS Auto Focus): The camera repeats focusing while the shutter button is pressed halfway.
(MANUAL FOCUS): The function allows you to manually focus on any subject while looking through the viewfinder.
SIMULTANEOUS USE of S-AF mode and MF mode: You can fine-adjust focus manually by turning the focus ring after AF is performed in the S-AF mode.