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Solution wanted for Digitising Transparancies


LenShepherd 12 4.3k United Kingdom
5 May 2020 8:40AM

Quote:I use f16 to maximise depth of field just in case there is slight curvature on the transparency

Using f16 is equivalent to using f22 or f32 (depending on lens construction) at 1:1 magnification - with a risk of image deterioration from diffraction if you enlarge the image a lot.
Fortunately over the years I mounted all my slides in glass to get rid of field curvature issues - and I usually use f5.6 or f8.
phred 14 85
9 Jun 2020 12:41AM
I use a 100mm Macro lens. Camera on tripod.
Negs held in either a frame from a film scanner or the neg carrier from an enlager. Hanging over the edge of a table, held in place by clamps.
Illuminated by flash in a softbox underneath.
Keep an eye on the histogram!
phred 14 85
13 Sep 2020 10:05AM
You can buy a lighting panel from B&Q and the like.
LenShepherd 12 4.3k United Kingdom
13 Sep 2020 10:07PM

Quote:You can buy a lighting panel from B&Q and the like.

Agreed - but if a light source does not have a wide colour gamut - some huge gaps - you going to have problems preserving original colours.
Electronic flash or daylight (gear on a tripod shooting toward the sky) can be good light sources.

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