Aperture blades on SEL35f18 not fully retracting -- just my copy or is it really an f1.6 lens?

Started Jan 10, 2013 | Discussions thread
Mike Wee
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Re: Aperture blades on SEL35f18 not fully retracting -- just my copy or is it really an f1.6 lens?
In reply to SQLGuy, Jan 17, 2013

SQLGuy wrote:

Thought we had this solved, but I just noticed, when looking at the EXIF data of a shot I took with the SEL35F18, that the max aperture is listed as 1.6953125.

Interestingly, the Aperture value (Av) for an f number of 1.8 is 1.69599. In other words log2(1.8^2) = 1.69599!

It's mighty close to be a coincidence. My guess is that EXIF parameter is an Av rather than an f number.

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