Contrast in pics under differing diffused light

[uhligfd]

Does the contrast change in pictures taken under diffused light, depending on the intensity of the light?

Practical situation: Take a picture of a rug hanging on a north wall inside a house, northern hemisphere:
day 1: dark sky, little light from the window: exposure around 1/8 sec, f/8
day 2: light sky, still cloudy but much more light in the room: exposure measured as 1/60 sec, still f/8.

Will the pics differ, assuming both exposures give the same density of the image and the exposures are both right.

I think it should not matter, "it" = the actual amount of light available at a given time should be irrelevant, as long as the exposure is compensated for (and a tripod used ...). And the contrast of the threads in the rug should come out about the same, giving us near identical images from the darker day and the brighter day.

Is this correct?

 

[Roger Hicks]

Yes. Using a spot meter, read the darkest shadow in which you want texture and detail. This determines exposure. Next read the brightest highlight in which you want texture and detail. Let us assume this is more than 5 stops brighter than your first reading. Unless you are prepared to use dodging and burning, or soft paper grades, you need to cut development time. See http://www.rogerandfrances.com/subscription/ps neg development 1.html (development technique) and http://www.rogerandfrances.com/subscription/ps dodge & burn.html (dodging and burning).

Cheers,

R.