Re: 135W back for Bronica ETRSi

[Jaap Los <losjb@xxxxxxxxxxxxxx>]

Chris P. Gibbs Photography wrote:
> 
> Jaap Los wrote:
> 
> > Moreover you need to buy a special focus screen  for US$ 50,-  Can
> > anyone offer a used one?
> 
> Hi Jaap,
> 
> Save your cash and just get a roll of "Geotape or Letraline" and stick
> it on your existing screen (make your own 24x54mm guides).  Better still
> take an art-knife and cut a couple of guide lines (as it's plastic and
> scratches real easy) into the surface of an old or second hand
> focusing-screen.  You can even just make a drop in cardboard
> *slide-mount type mask* that just sits on the focusing screen, a cheap
> solution to the problem!
> 
> Just get the dimmensions for the lines from a local dealers stock or
> Tamron direct, or just measure the 24x54mm back if you allready have it
> and transfer the dimmensions to your screen.
> 
> As for the above suggestions I have not done them on an ETRSi, but have
> with an RB67, same principle.....it works great!  And as we ETRSi people
> know, what you see through the prism *is not* what you get on film, so I
> would not beat myself up over +/- a milimeter here and there (just look
> through that prism & grip it with your hand and twist - not the best of
> designs......but we love it anyways).
> 
> And no, I have not found a suitable reason (excuse yet) to buy a 24x54mm
> back yet.  Don't forget you'll need a good *anti-newton* glass enlarger
> carrier for the film, a better buy than the screen IMHO!
> 
> Cheers,
> Chris
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Hi Chris,
Thanks for the information. I quess you are quite right in making my own
mask for 24x54 mm. Didn't think about the adjustments for the enlarger
as suggested by you. I have a 24x36/ 6x6 cm enlarger and of course I
need to make a special mask for my 6x6 negative holder. Fortunately I
have a glass one (anti Newton!), so a simple mask will do. I think I
will now follow the 135W back route and forget about the 70 mm business
all together! Looking forward to develop the 24x54 HIE negatives,
however the Dutch winter season doesn't give me so many subjects to
photograph! May be our IR friends could give me some ideas about these
'winter-sujects'. Moreover we haven't got so much snow, sometimes there
isn't any! So what now? 
Greetings
Jaap Los
Holland
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End of Infrared-Digest V0 #319
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