RE: 70mm IR

[Ron Aavang <Ron_Aavang@xxxxxxxxxxxxxx>]

> -----Original Message-----
> From:	Willem-Jan Markerink [SMTP:w.j.markerink@xxxxx]
> Sent:	Monday, May 03, 1999 11:43 AM
> To:	infrared@xxxxx
> Subject:	Re: 70mm IR
> 
> Together with a list member, I recently did some research on a 
> BTFR-related solution for the Bronica 70mm back (the one I had for 
> sale is sold btw, and I am still not sure whether I can locate a 
> second, as mentioned before).
> At first I thought a larger filter might fit between body & back, 
> inside the square ridge on the outside of the back, but I was told 
> those two surfaces have a too close fit already (so the 0.4mm #87C 
> won't work, but the 0.1mm #87 might). 
> It seems there might also be room for a true BTFR-version, but again 
> only the 0.1mm #87.
> Not sure about mounting a filter in the camera, behind the mirror, as 
> I don't have a Bronica ETRS body to check that....
> [this is actually the original solution as written by Andy Davidhazy 
> in a PhotoForum text file, which later resulted in the BTFR-version]
> 
> 
> --                 
> Bye,
> 
> Willem-Jan Markerink
> 
	[Ron Aavang]  If it will help, I will look at my Bronica ETRS and
70mm back tonight and make some measurements and post my findings. I am
wanting to do this myself and also was going to check the possibilities with
my 135W back.

	Later,

	Ron
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