[rollei_list] Re: Rollei B&W filters blog
- From: CarlosMFreaza <cmfreaza@xxxxxxxxx>
- To: rollei_list@xxxxxxxxxxxxx
- Date: Sat, 30 Jul 2011 06:21:47 -0300
2011/7/30 hari ho <hariho@xxxxxxxxxxxxxxx>:
> .... How can I tell if my Infrarot filter is post-1951? The markings on the
> front says
> "FRANKE & HEIDECKE GERMANY Rollei - Infrarot" in black with the Rollei
> 'R' logo in red.
According W D Emanuel book on the Rolleiflex, if your filter has the
"R", it is provided with the IR optical compensation. The red for the
"R" could indicate your filter is from the earlier '50s.
Carlos
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