[rollei_list] Re: Rolleiflex filter evolution
- From: CarlosMFreaza <cmfreaza@xxxxxxxxx>
- To: rollei_list@xxxxxxxxxxxxx
- Date: Sun, 27 Jun 2010 13:58:42 -0300
The red "R" was used along some years during the '50s to indicate the
filter has antireflection coating. R I means Rollei bayonet I. Bayonet
mount filters with the diameter size in mm, f.e. 28,5mm (BI) are older
than the filters without the diameter size in mm. Several Bayonet I
B&W filters were made from 1938/1941. "Franke & Heidecke" was used up
to about 1964, only "Rollei" afterward.
Most special filters for color photography were made from 1958/1960.
Duto filters B I were made from 1937 to 1951, They were called
"Rolleisoft" from 1952.-
Before the Rolleiflex Automat models (1937), Rollei filters did not
have bayonet mount, they had friction mount.
Carlos
2010/6/27 Allan Derickson <alland435@xxxxxxxxxxx>:
> I haven’t seen this covered before and I’ve always been curious about the
> changes to Rollei filters through the years.
>
>
>
> I have collected an assortment of filters for my bayonet one Automat over
> the years. They differ slightly in detail. For the black and white filters
> I have:
>
>
>
> The first three styles are satin finished flat front.
>
> Reading clockwise:
>
>
>
> GERMANY (all caps)
>
> Rollei - hellgrun
>
> 28,5 Ø
>
> FRANKE & HEIDECKE (all caps, slightly larger font)
>
> (no filter factor)
>
>
>
> GERMANY (all caps)
>
> Rollei gelb - mittel
>
> R (red script)
>
> FRANKE & HEIDECKE ( all caps, slightly larger font)
>
> no filter factor
>
>
>
> GERMANY (all caps)
>
> RI (black script R, sans serif I)
>
> Rollei - gelb - hell
>
> -1 (filter factor)
>
>
>
> This last one is highly polished beveled front
>
>
>
> GERMANY (all caps)
>
> RI (black script R, sans serif I)
>
> Rollei - hellrot
>
> -2 ... -3,5 (filter factor)
>
>
>
> Then I have a:
>
> Rollei - Duto 0
>
> 28,5 Ø
>
> Germany (only first letter capitalized)
>
> Franke & Heidecke (only first letters capitalized)
>
>
>
> And a:
>
> Rollei – Duto 1
>
> 28,5 Ø
>
> FRANKE & HEIDECKE (all caps)
>
> GERMANY (all caps)
>
>
>
> And finally, some of my color correction filters have red script “R” and
> some have black script “RI”
>
>
>
> Can anyone put dates on these styles?
---
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