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12-28-2010, 09:29 AM   #1
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Best K20D Setting for SMC Pentax-AF 35-70mm F2.8

Just wanted to know what the best setting is to use the SMC Pentax-AF 35-70mm F2.8 on a K20D body. I have gone into custom and switched on Using aperture ring. I have snapped several pictures using manual and TaV. Pretty impressed w/ quality so far in an office environment.

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12-28-2010, 10:38 AM   #2
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Found My Answer

M''' Manual exposure with stop down metering. You set the aperture on the lens, press the green button/AE-L button which stops down the lens and sets the shutter speed as per the metered value.

Av Automatic exposure, you set the aperture, the camera sets the shutter speed

K: The original Pentax bayonet mount. Allows for manual and Av exposure modes (if the camera body supports this). The lens communicates to the body how many stops the aperture ring is stopped down.

KF: K mount with electrical contacts for the smc Pentax-AF 35-70mm f/2.8 autofocus lens. The autofocus motor is built into the lens. This mount was soon discontinued. Next generation autofocus lenses (F, FA D FA, FA J, DA, DA L) do not provide autofocus with this mount.


The Pentax Camera Lens Compatibility Chart
12-28-2010, 07:29 PM   #3
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Well, your answer does not match the question, but OK, as long as you're happy :-)
12-29-2010, 07:41 AM   #4
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Sorry,

[Assuming] anything stationary as it is almost impossible to focus this lens fast enough for moving objects to get that tack sharp result.

Just playing around with my old lens. Can't afford nice glass right now but one day. )


~ Haden

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