Originally posted by gooseta So should i go with the DA 300 or M 300
If you want to save money, I recommend neither, get the A*300mm. If you want the best, get the DA*300.
Originally posted by derekkite Is the metering mode for M lenses done with the Green button?
Yes, but the way you've stated it is confusing. Metering mode and metering are different concepts. Metering mode is how the camera meters
- across most of the frame (Matrix),
- in the center of the frame (Center Weighted), or
- center point only (Spot).
Manual exposure (M) lenses cannot use Matrix metering. They also cannot use P-TTL flash.
Pressing the Green button will set shutter speed to correctly expose at the selected ISO and mechanical aperture setting.