On Dec 30, 2010, at 3:22 PM, steve harley wrote: > On 2010-12-30 12:40 , Eric Weir wrote: >> >> On Dec 30, 2010, at 10:32 AM, J.C. O'Connell wrote: >> >>> The pentax dslrs cant do open aperture metering because >>> they have no cam sensors to detect the f stop settings >>> on the lenses of k/m series lenses. >> >> What about A lenses? > > yes; with an A lens open aperture metering is possible -- you can set the > aperture on the camera (or let the camera set it? dunno since i never use Tv > or P), avoid use of the green button, and the camera will meter the shot > automatically as you compose; for that reason i usually prefer my A 50/2 over > my M 50/1.4, and i have an A 50/1.7 on the way that may replace both (until i > find a deal on an FA or DA) > > - You can use both TV and P with A lenses. I frequently use TV when shooting with my A400/5.6, since shutter speed is critical with that long a lens. Paul
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