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Author Topic: Sony a7r3 and Metabones using Contax lens.  (Read 690 times)

andyptak

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Sony a7r3 and Metabones using Contax lens.
« on: June 07, 2018, 02:12:46 PM »

I just bought a Contax 28-85 and am using a plain Metabones - not Speedbooster adaptor - and I'm getting ridiculously low readings at ISO 200. Using f8 or f11 outside on a bright day I'm getting about 1/30 sec on aperture priority.

Do I loose a couple of stops with the adaptor?
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Telecaster

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Re: Sony a7r3 and Metabones using Contax lens.
« Reply #1 on: June 07, 2018, 05:20:55 PM »

Hmmm…the adapter is just a tube. No light loss. What do the exposures look like histogram-wise? Post a sample or two if you can. Also make sure the adapter isn't forcing the lens to stop down all the way.

-Dave-
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andyptak

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Re: Sony a7r3 and Metabones using Contax lens.
« Reply #2 on: June 08, 2018, 02:03:04 PM »

Don't I feel dumb. I discovered that I had accidentally set exposure compensation to +2. Answers why I thought I had lost two stops.

« Last Edit: June 08, 2018, 02:29:02 PM by andyptak »
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NancyP

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Re: Sony a7r3 and Metabones using Contax lens.
« Reply #3 on: July 10, 2018, 04:04:07 PM »

We all resemble that comment some days..... ;D
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