Half frame negative size

alanrockwood · Jun 9, 2024

What is the true actual (measured) size of a half frame negative from a a Pen FT?

I don't mean the nominal value of 24x18mm for half frame negatives, but the actual size of the image measured accurately on a piece of exposed film.

Thanks.

Don_ih · Jun 9, 2024

17.4 x 23.3 mm is the size of the film gate on my Pen EE. Maybe it's the same on the FT?

alanrockwood · Jun 9, 2024

Don_ih said:
17.4 x 23.3 mm is the size of the film gate on my Pen EE. Maybe it's the same on the FT?

Thanks.

r_a_feldman · Jun 9, 2024

Don_ih said:
17.4 x 23.3 mm is the size of the film gate on my Pen EE. Maybe it's the same on the FT?

My late-model FT (Serial No 315###) produces negatives measuring 17.1 x 23.5 mm.

xkaes · Jun 9, 2024

There seems to be quite a bit of variability regarding the half-frame format -- from 17x24mm to 18x24mm: CLAIMED. And then there is the complicating factor of the enlarger negative carrier -- which probably also varies.

r_a_feldman · Jun 9, 2024

r_a_feldman said:
My late-model FT (Serial No 315###) produces negatives measuring 17.1 x 23.5 mm.

The film gate on a Pen S (SN 386###) that I have is the same: 17.1 x 23.5 mm.

Half frame negative size

alanrockwood

Don_ih

alanrockwood

r_a_feldman

xkaes

r_a_feldman

Privacy & Transparency

Privacy & Transparency