[Frameworks] UV Lens Filters and Lens

[Matt Helme]

+1,2 and so on refers to the filter factor, how many stops you have to open the 
lens to compensate for the loss of light when you use a filter.
Matt

 http://www.youtube.com/results?search_query=oscarthepug1234&aq=f




________________________________
From: Mauri Lehtonen <malehton at yahoo.com>
To: Experimental Film Discussion List <frameworks at jonasmekasfilms.com>
Sent: Tue, March 29, 2011 7:18:40 AM
Subject: Re: [Frameworks] UV Lens Filters and Lens


Hi,

"Nahlinse" means "close-up lens". I don't know about those other lenses.

-Mauri

--- On Tue, 3/29/11, Kevin Timmins <on-one-2 at hotmail.com> wrote:


>From: Kevin Timmins <on-one-2 at hotmail.com>
>Subject: [Frameworks] UV Lens Filters and Lens
>To: frameworks at jonasmekasfilms.com
>Date: Tuesday, March 29, 2011, 6:54 AM
>
>
> Hi, I purchased a bundle of Super 8 stuff a while back and wondered if anyone 
>can tell me what the following items are:
>
>
>First there is a selection of 4 UV lenses. Now I realize that the purpose of 
>these lenses are fairly self explanatory, that is to keep out extra sunlight. 
>I'm wondering however how the grading system works exactly? As you will see from 
>the pictures there is a -0, +1, +2 and another that says S L39.3. The two 
>Nahlinse filters are concave, does this effect the light coming in some how? Are 
>any of these worth keeping or should I sell them off on ebay? If sell then how 
>should I price them?
>
>
>Secondly there is some kind of Lens, a rather large lens that extends quite a 
>bit when twisted. The lens case says EMC on it and the lens itself twists from 
>infinity to 0.7. Once again is it worth keeping, if I decide to sell it how much 
>should it be priced at etc?
>
>
>Thanks for any help to  come
>Kevin 
>-----Inline Attachment Follows-----
>
>
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