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<blockquote data-quote="WayneF" data-source="post: 442394" data-attributes="member: 12496">Your words seem to be seeking requirements for some specific goal (of submission somewhere) that we don't know anything about.&nbsp; Mystery to us too.If all you want to do is to determine the enlargement factor (like 1:1 or 1:4, etc), then that part is not hard. Just photograph the ruler as close and large as you can manage it (in focus).Then if you see say&nbsp; 6mm of ruler, and if the image of the ruler is 6mm, then that is real life size of 1:1.If you see 24 mm of ruler, with an image size of 6mm then that is 6:24 or 1:4 ratio.However,&nbsp; to know the size of the image, you will have to know the size of the sensor.Best evidence is that the Fuji sensor is 6.4 x 4.8 mm dimensions.&nbsp; You have to use that to judge your image size.Maybe like seeing 35mm of ruler across the 6.4mm sensor width, which would be 1:5.5 ratio.</blockquote>

[QUOTE="WayneF, post: 442394, member: 12496"] Your words seem to be seeking requirements for some specific goal (of submission somewhere) that we don't know anything about. Mystery to us too. If all you want to do is to determine the enlargement factor (like 1:1 or 1:4, etc), then that part is not hard. Just photograph the ruler as close and large as you can manage it (in focus). Then if you see say 6mm of ruler, and if the image of the ruler is 6mm, then that is real life size of 1:1. If you see 24 mm of ruler, with an image size of 6mm then that is 6:24 or 1:4 ratio. However, to know the size of the image, you will have to know the size of the sensor. Best evidence is that the Fuji sensor is 6.4 x 4.8 mm dimensions. You have to use that to judge your image size. Maybe like seeing 35mm of ruler across the 6.4mm sensor width, which would be 1:5.5 ratio. [/QUOTE]

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