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07-09-2012, 03:20 AM   #1
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Metering with a Takumar (or an M)

Hi Guys

I know that I cannot meter in manual or AV mode when using a Takumar lens or my SMC M 28/2.8. Those are the only two modes I use on my Pentax K-x. Than is there any way I can use metering using those lenses? Otherwise how else can I provide for EV compensation correctly using those lenses? Thanks.

07-09-2012, 03:56 AM   #2
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You actually can't use Av mode with your M lens, just M mode. This is because even if you use the aperture ring, the lens stays wide-open thanks to its automatic diaphragm, unlike a Takumar. See this guide:

If you want to simulate EV compensation, simply set a slower shutter speed or aperture after pressing the green button in M mode. Each turn of the e-dial will correspond to 1/2 or 1/3 of a stop, as configured in your settings, and each turn of the aperture ring will correspond to either 1 or 1/2 of a stop, depending on whether or not there's an intermediate stop near the current aperture setting.

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07-09-2012, 04:35 AM   #3
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QuoteOriginally posted by voyager13 Quote
Hi Guys

I know that I cannot meter in manual or AV mode when using a Takumar lens or my SMC M 28/2.8.
Yes, you can use Av mode when you use Takumar lenses, just set the aperture manually and watch the shutter speed change automatically. With K lenses and M lenses Adam has already explained that you should use stop down metering. There is atleast one K lens that behaves like a Takumar and allows Av mode, that is the K85/2.2 soft.
07-09-2012, 05:05 AM   #4
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Thanks Adam and Selar. V.useful info.


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