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1. I didn't check your numbers, but I'll assume you're correct. However, in my experience, film does not even come close to approaching those theoretical lp/mm numbers. This test, done with Ektachrome instead of Ektar, reflects my own findings: http://www.luminous-landscape.com/reviews/cameras/iq180_vs_8...

2. Ok, you're right. Some films will certainly outperform some digital. But, the new MF backs will shoot 13-15 stops as well, so who wins? I'd argue that, on average, digital trumps film. I've shot mostly velvia (the most popular landscape/wildlife film for 30 years?) and provia, and those can't compete with even my 3 year old dslr. (see http://www.clarkvision.com/articles/dynamicrange2/ for tests done with an 8 year old dslr)

3. Get a color checker (http://xritephoto.com/ph_product_overview.aspx?ID=1192). No filters necessary, and precise color no matter what lighting conditions. And, you'd be able to eliminate one of those miserable fucking peripherals.

FWIW, going digital has tremendously simplified my workflow and allowed me more shooting time with less dicking around with equipment time, and much better quality prints (and I make really big prints). Cheers.

Oh, no question that you have a better MTF from an Alpa than you would from an 8x10 at f32 (a perfectly reasonable working aperture for 8x10). I think the 8x10 can still out resolve the Alpa but you're getting into that ugly 20% part of the MTF curves. The rule of thumb I've had for a while is that digital has fewer, better pixels; the digital back hits a wall beyond which you cannot proceed any further, but at and up until that wall the results are superb. I think the current sweet spot is speculated to be 6 cm x 9 cm cameras, mostly because of diffraction and film flatness issues. And reversal film has notoriously poor dynamic range, and mediocre color correction; that's one of the things that pushed me to doing all negatives in my photography.

A professional is probably only going to use film these days if they want a specific effect; say, infrared, or sometimes people fart around with Holgas and call it art. For an amateur, the $20,000 digital back that can compare with a 4x5 with some decent lenses costing a tenth that much is a much harder sell. And that's pretty much where I sit; I'm not going to spend $50,000 on a top of the line MF outfit. I might spend the $1.2K for an X-100, though, still mulling that over. A couple thousand buys a lot of film and developer.

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