Archived posting to the Leica Users Group, 2000/11/17

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Subject: Re: [Leica] UV filter for Noctilux-measurable light loss??
From: Tina Manley <images@InfoAve.Net>
Date: Fri, 17 Nov 2000 11:37:28 -0500

At 11:43 AM 11/17/00 +0000, you wrote:

>An aside to Tina: What instrument do you use to measure darkness? ;-)
>Nick.


O.K., Nick.  I tried it again.  I am using a Minolta IV F Auto Meter.  I've 
entered 3200 as the ISO and 1/125 as the time.  In room light, without the 
UV filter in front of the meter I get an f number of 2.89.  With the UV 
filter, I get an f number of 2.86.  Not much difference, it's true, but 
enough to matter when you are taking pictures in the dark!  In my dark 
hallway, with an ISO of 3200 and 1/30, I get a reading of 1.0 without the 
filter and a reading of "under" with the UV filter.

Tina

Tina Manley, ASMP
http://www.tinamanley.com

Replies: Reply from Mark Rabiner <mark@rabiner.cncoffice.com> (Re: [Leica] UV filter for Noctilux-measurable light loss??)
Reply from Rob McElroy <idag@pce.net> (Re: [Leica] UV filter for Noctilux-measurable light loss??)
Reply from Tina Manley <images@InfoAve.Net> (Re: [Leica] UV filter for Noctilux-measurable light loss??)
Reply from Tina Manley <images@InfoAve.Net> (Re: [Leica] UV filter for Noctilux-measurable light loss??)
Reply from Tina Manley <images@InfoAve.Net> (Re: [Leica] UV filter for Noctilux-measurable light loss??)