Tech tip1 min read
Minimum Microfilm Resolution Formula
Minimum acceptable microfilm resolution equals the camera's minimum lines/mm divided by its reduction ratio, for planetary and rotary cameras.
The minimum acceptable film resolution is calculated with a simple formula: the camera's minimum Lines/mm divided by the camera reduction ratio.
Highlights
| Camera type | Formula | Example |
|---|---|---|
| Planetary and Camera Sorter | 125 Lines/mm ÷ reduction ratio | 125 ÷ 24X = block 5.2 or the nearest block |
| Rotary | 100 Lines/mm ÷ reduction ratio | 100 ÷ 24X = block 4.1 or the nearest block |
Source:Eastman Park Micrographics(epminc.com)(opens in a new tab)
Frequently asked questions
How is the minimum acceptable microfilm resolution calculated?
The camera's minimum Lines/mm is divided by the camera reduction ratio.
What is the minimum resolution formula for Planetary and Camera Sorter cameras?
125 Lines/mm divided by the reduction ratio; for example 125 ÷ 24X equals block 5.2 or the nearest block.
What is the minimum resolution formula for Rotary cameras?
100 Lines/mm divided by the reduction ratio; for example 100 ÷ 24X equals block 4.1 or the nearest block.
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