Film Holder Specifications

Film holder size	2x3	3x4	4x5	5x7	8x10	11x14	14x17
Depth to film surface	0.197 +/- 0.007	0.197 +/- 0.007	0.197 +/- 0.007	0.228 +/- 0.010	0.260 +/- 0.016	0.332 +/- 0.016	0.320 +/- 0.016
Retaining Tab Location	3.968	4.859	5.562	7.661	10.850	16.160	19.288
Thickness	0.520	0.520	0.520	0.562	0.594	0.790	0.686
Length	4.671	5.565	6.296	8.422	11.625	16.188	19.563
Width	3.109	4.000	4.765	5.906	9.322	13.000	16.000
Distance to exposure field	0.650	0.650	0.650	0.697	0.775	1.255	1.043
Exposure height	3.338	4.228	5.002	7.010	10.026	14.086	17.062
Exposure width	2.163	3.131	3.882	4.850	7.850	10.188	13.806

(NOTE! The positioning of the ground glass is the most critical detail in the design. The focusing surface of the ground glass must be in the same position as the emulsion of the film when a film holder is inserted.)

To obtain a copy of the complete ANSI specifications for film holders,
visit the organizations home page and download file:
ANSI/PIMA IT3.108-1998
by clicking on the icon below!

(small fee required for downloads from the ANSI site)

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