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[wizard]

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vor 3 Stunden schrieb jerzy:

And short series of IIIC Wehrmacht cameras (391424 - 391700) had 2 small triangle notches as on drawing,

I presume the purpose of those V-notches was to center the negative in some sort of close examination and enlargement device.

[luigi bertolotti]

6 hours ago, romanus53 said:

In those early days when preloade film-cannisters were not common it might be helpful to just check wether some kind or stripe of film was inside. Can you see through the cut-out into the film-canal when taking the lens off? "Filmkontrolle" means to me as German speaker just check wether film is inside  or not.

Yes... one more hipotesis... indeed to check if film is loaded into a Barnack, one can operate on the rewind knob and "feel the tension"... but with a hand loaded canister, with a short film, can be someway risky.

 

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[jerzy]

I believe that it was one of LF Members, DDM, who shown this picture. Camera 4201 is 0-series, as you may notice film window is rectangular. Drawing is from 1922, so when 0-series came into production it could have been changed - I never had a chance to open authentic 0-Series. Frame marked blue is the one that is pictured in #5

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