Pentax DL2 + Sigma F2.8 EX MACRO

Hi,
Forgive me for being naive, but have got 100mm F2.8 (film) sigma macro lens, and never put it on any camera yet. In instructions, which are for film as it is a film lens, it says for program and shutter priority modes , turn the diameter ring to 'A' position. For aperture priority and manual mode, the diaphram ring has to be turned to which ever fstop needed. This would be ok with my MZ3, but for my DL2, obviously I would need to enable aperture ring in the menu system, or could I just put it to Av mode, and change the shutter speed as I would for other autofocus lenses? I'm just a bit worried about ruining my DL2 or the macro lens itself. Anyone who perhaps has this lens or similar, help using it on a digital body would be greatly appreciated

Brian

Sorry, in line5, at beginning I meant fstop, and not shutter speed!
Cheers

Brian

Hello,

1 There is not really any such thing as a film lens or a digital lens. Lenses which are described as "digital lenses" may be designed for a smaller sensor than a 35mm frame, and they may have a more parallel light path in order to improve sensor performance, but they work in exactly the same way as lenses designed during the film era.

2 Just put your lens on the A setting and use all your camera's modes. When on the A setting, the lens behaves like a modern lens without an aperture ring. There is never a reason to take the lens off the A setting with a digital camera.

G

Thanks - working fine- just discovered manual focus is best for macro!