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Angenieux 9.5-57 aperture

angenieux Non-fixed aperture F1.6

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#1 Carl Nenzen Loven

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Posted 05 September 2016 - 06:03 PM

Hi everyone,

Now I know this lens has been around the block for quite some time. And for the purist, this is at best a decent run-and-gun lens for a R16 camera. However I might be using it for a smaller project soon and I am having issues finding information about the lens.

More specifially the aperture.

I know it is a variable one, but when does it move? Because physically the two lenses I had access to use, both have the aperature at F/1.6 over the whole zoom-range, physically. So planning a decent exposure is a lot harder.

Now I know I can lock it to F/2.2, but in this scenario I would love yo be able to use the full speed of the lens.

Appriciate any input.

//C


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#2 Kenny N Suleimanagich

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Posted 05 September 2016 - 10:45 PM

You should test it on a digital camera with a waveform monitor
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#3 Carl Nenzen Loven

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Posted 05 September 2016 - 11:49 PM

You should test it on a digital camera with a waveform monitor

 

This is of course one option...


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#4 Mike Rizos

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Posted 01 October 2016 - 08:25 PM

That lens is T1.9 (f1.6) up to 12mm. From 12mm it is reduced gradually to T 2.5 at about 45-57mm. I'm basically quoting from the 16mm Motion Picture Camera Help Book by Douglas Underdahl (1989).


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