dimensions

[Philippe-Georges]

Perhaps a dump question, but is the a rule to convert dimensions noted in pixels in to cm, I am so used to think in meters not in pixels.
The scanner software notes the dimensions in pix, but this gives me no indication how large (or small) the image will be in cm (or mm). And I suppose that resolution (dpi) will have to be taken in account to, so this makes it more complex.
Something like : X pix x Y pix at X dpi = X mm x Y mm

Thank you,

Philippe

 

[jd callow]

you need to do the math in your head or on paper. figure a 3500px scan is going to be about a 100px per mm on 35mm frame. Which will give you just about enough pixels for a 20cm x 30cm print on most printers -- I think. hope that helps.

 

[toyotadesigner]

Depending on your resolution you can figure it out:

300 ppi: 25.4mm / 300 pixel = 0.084 mm per pixel
1200 ppi: 25.4 / 1200 pixel = 0.021 mm per pixel
2400 ppi: 25.4mm / 2400 pixel = 0.0105 mm per pixel
4000 ppi: 25.4mm / 4000 pixel = 0.00635 mm per pixel
etc

 

[Philippe-Georges]

Thank you all, this will help me a lot!

Philippe