|Material:|| Transmission Material|
|Overall Size:|| 1.38 in. x 3.35 in. |
(35mm x 85mm)
|Image Area:|| 20mm x 30mm|
|Step Size:|| 5mm x 5mm|
This target conforms to International Standard ISO 21550, "Electronic Scanners for Photographic Images - Dynamic Range Measurement".
The ST-53 is available in two different target configurations; ST-53-1-TM has 0.1 to 4.0 Optical Densities which are appropriate for imaging media associated with direct visual viewing situations such as photographic slides or paper prints; and ST-53-2-TM has 0 to 6.0 Optical Densities which are appropriate for intermediate imaging media such as negatives.