Originally posted by stevebrot Two things to check...
Aperture control on camera:- Lens on camera
- M mode
- Shutter speed at 2s
- Aperture at minimum for the lens
- Release shutter five times while looking into the front of the lens
- Repeat for each full aperture stop including wide open
The iris should open the same amount for each of the five repetitions and should open appropriately.
Lens aperture functionality:- Lens off camera
- Aperture ring at smallest setting
- Looking into rear of lens, flick the aperture actuator with your finger. The motion should be snappy and without sticking or hesitation from the set aperture to wide open.
- Repeat for for each full stop until wide open
For lenses lacking an aperture ring, just do a careful evaluation at narrowest setting (default when not mounted to the body).
Steve
Hi Steve,
Thanks, have done a few on the few lenses i have and nothing unusual that i can see.
Tried the DA 12-24 and looks like zooms are not affected, ran through once again the 40,100WR same problems.
Finding it odd, usually shooting AV, my main concern is Aperture priority, sharpness across the picture, bokeh effect etc.. and the shutter speed is automatic and never take notice of it, esp during outdoor daylight shots.
Unless low light, utilising faster glass, monitoring the shutter speed to avoid the shakes. Other than that i usually let the camera do the shutter speed.
Regards