Originally posted by Pemarp Thanks, there is no green button on this camera,I tried same shot with all possible apertures and they all came out the same, Does it make any difference if the Aperture ring is on A rather than M (Even though I've already set the "MF" on the camera body ?)Thanks.Pemarp M42
"A" setting means "automatic". If you use this setting with a Pentax M42/K adaptor, the lens will not stop down when you take the picture.
"M" setting means "manual". The lens will stop down immediately at the chosen f-stop. You should use this setting.
In Av mode :
- Focus and compose at wide aperture (it's easier)
- Turn the aperture ring at the f-stop you want
- Take the picture
or
- Select the f-stop you want
- Push the lens switch to "A" to focus and compose
- Push the lens switch to "M" before shooting.
As Lowell pointed : you'll probably have to select exp. compensation.