Hi,
I've used all the films mentioned so far intensively.
So from my tests and experience:
Reala 100 is a good choice. Grain is quite comparable to Portra 160, but Reala has a bit higher resolution. But to exploit its resolution advantage you have to use optical enlarging with APO enlarging lenses (the drum scanners only scan MF film in the 3000 - 4000 ppi range, and that is not enough to get the full resolution out of Reala).
With flatbed scanners you waste the potential of film completely because of their extremely low resolution and grain increase by scanner noise.
Fuji Pro 160NS has even a bit finer grain than Reala (it is a more recent, modern emulsion).
By far the best detail rendition (finest grain, highest resolution, best sharpness) you will achieve by using color reversal (slide) film.
Provia 100F, Astia 100F, E100G, Velvia 100F, Velvia 100 all have significantly better detail rendition than Portra 160, Ektar, Reala, Pro 160NS.
And in hybrid workflow you have the advantages that
- you always have an exact color reference with your original slide; therefore you know how to get the right colors with your scan
- because of the much finer grain it is easier with sharpening.
As you are working with an Mamiya 7, right exposure with slide film is not a problem at all. The M7 light meter is very accurate, you don't have to be afraid of using slides.
And using an external light meter is always possible, too.
Medium format slides, especially those exposed with the outstanding Mamiya 7 optics, are absolutely breath taking. It is impossible to get that brillance and 'impact' with prints.
Watch them with the outstanding Schneider 3x medium format loupe (
http://www.schneider-kreuznach.com/foto_e/zubehoer_lupen.htm ).
Then you have their fulll power, without the quality loss by scanning.
And, even better, project them with a slide projector.
Projected medium format slides deliver by far the best, most brillant and sharpest, and of course biggest pictures.
Once you've seen projected medium format slides, you will be absolutely hooked!
Then you know that god really exists :angel:.
Using slides, and viewing them with a very good slide loupe and projecting it, is furthermore not only the best quality option, it is by far the
most cheapest option:
- no need to pay for scans
- no need to pay for prints
- a projected slide costs less than a buck (and you can go as big as you want without paying extra); but a 30" or 40" print cost you dozens of bucks, with good quality mostly more than 100 bucks.
With slide film I can have each of my pictures big and impressive.
With negative film that is completely impossible to afford (unless you are a millionaire; I'm not).
Cheers, Jan