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Copying film 8MM 35MM Large format

camerart

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Hi,
I'm going to copy my film negatives, so I can downsize.

First I'm trying Standard 8MM film from the 50s.

I've got some interesting kit to modify, to do this, from old equipment.
I've now got the film transport to move 1x frame of the 8MM film at a time, and continuously push it ast the light.
Now I need to place a digital camera to colect this projection.

What resolution digital image will cover an 8MM frame?

I'll go through each different film size as I finish the first!

Cheers, Camerart.
 

BrianS

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Interesting project. Remember that the shutter speed of an 8mm camera is about 1/40th of a second, so there will be motion blur on individual frames.

Figure 50lp/mm "at most", 100 pixels/mm, so 600x800 should be reasonable.
 

Roger S

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I have never tried to replicate an individual 8mm frame. They were captured at 16 frames per second, or approximately 1/30th second. There's just not enough information available in that one frame to save. Surprisingly, those 13mm, 110 camera films could catch loads more in a not so much larger frame because of their faster shutter speed.
 

camerart

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Hi B and R,
I am copying 1x frame at a time, so what would your estimate be of image quality that will capture each, 8MM 35mm and 1/2 frame?

The speed of the device is approx 100 frames/min.
C
 

BrianS

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If you want the same quality scan that is given by a flatbed scanner, use at least 50pixels/millimeter. 1800x1200 for 35mm, 900x1200 for half-frame. That should be good enough. If the negatives are very high quality, double the measurements.
 

camerart

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If you want the same quality scan that is given by a flatbed scanner, use at least 50pixels/millimeter. 1800x1200 for 35mm, 900x1200 for half-frame. That should be good enough. If the negatives are very high quality, double the measurements.
Hi B,
Thanks.
C
 

camerart

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If you want the same quality scan that is given by a flatbed scanner, use at least 50pixels/millimeter. 1800x1200 for 35mm, 900x1200 for half-frame. That should be good enough. If the negatives are very high quality, double the measurements.
Hi B,
I've just noticed that your recommendation, where you gave me 1/2 frame, but it should be muuuch more, for 1/2 plate.
C
 

BrianS

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Hi B and R,
I am copying 1x frame at a time, so what would your estimate be of image quality that will capture each, 8MM 35mm and 1/2 frame?

The speed of the device is approx 100 frames/min.
C
You had asked for 1/2 frame, which is traditionally a 18x24 negative.
The rule-of-thumb should still hold, just multiple the size in millimeters by 50.
 
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