Brocks
Suspended / Banned
- Messages
- 760
- Edit My Images
- Yes
Right, After repeated comments from people here and elsewhere that my photos aren't sharp (And I mostly agree) I have had Yet another go at using the canon microadjustment. Bearing in mind images have been criticised even when I use a tripod, Mirror lock up and cable release.
The Sigma 10-20 is noticeably better but my main lens, the 24-105 never really shows any improvement. I found this link, and tried two of the methods.:
To be exact:
Camera on tripod,
Mirror lock up
Filters removed
Set the camera as follows:
Spot focus
AV mode set to f/4
zoom tunned to 105mm
ISO 100
Single shot AF
Stabilisers off
1. Using the interference image method. i.e:
Live view on set to 100%
Adjust focus to get the interference pattern
switch off live view
Half press the shutter to activate AF
Watch the motion of the focus ring.
Adjust microadjust on the camera,
Repeat until focus ring motion ceases.
Yep I can see the patterns in live view and the meter shifts when I auto focus. Returning to live view, the image is indeed OOF. But changing the micro adjustment doesn't improve or erradicate the movement of the focus ring.
2. Using the Birdphotographers method
I placed a chess board against a wall for this one
When I set the live view to 200%, the boaundary beween black and white is a little fuzzy. Using the < and > buttons does adjust the focus, But I never get a really sharp boundary. The boarder was wood so I hoped to be able to pick out the grain. Alas no.
So Am I missing something or is there a fault in the system?
The Sigma 10-20 is noticeably better but my main lens, the 24-105 never really shows any improvement. I found this link, and tried two of the methods.:
To be exact:
Camera on tripod,
Mirror lock up
Filters removed
Set the camera as follows:
Spot focus
AV mode set to f/4
zoom tunned to 105mm
ISO 100
Single shot AF
Stabilisers off
1. Using the interference image method. i.e:
Live view on set to 100%
Adjust focus to get the interference pattern
switch off live view
Half press the shutter to activate AF
Watch the motion of the focus ring.
Adjust microadjust on the camera,
Repeat until focus ring motion ceases.
Yep I can see the patterns in live view and the meter shifts when I auto focus. Returning to live view, the image is indeed OOF. But changing the micro adjustment doesn't improve or erradicate the movement of the focus ring.
2. Using the Birdphotographers method
I placed a chess board against a wall for this one
When I set the live view to 200%, the boaundary beween black and white is a little fuzzy. Using the < and > buttons does adjust the focus, But I never get a really sharp boundary. The boarder was wood so I hoped to be able to pick out the grain. Alas no.
So Am I missing something or is there a fault in the system?