Recently I went out shooting with my son. I used my Fujifilm GFX 50S II with Hasselblad HCD 4/28 via H Adapter G, and he used his Mamiya RB67 ProSD with Sekor 50mm lens. We both took this scene from the same vantage point.
Here is my digital image. Shot at ISO2500 f/4 at 1/20s. Hand held.
And his photograph, Film stock is the CineStill 400, exposed one stop over at ISO200, but processed at 200. This is a 6 minute exposure at f/32, on a very sturdy tripod (Gitzo), of course. Metered at 90s, but the exposure turned out to be 6 whole minutes after correcting for reciprocity failure of the film. The glow on the in-focus overexposed parts is caused by the halation effect of CineStill. This is a movie film stock, with the remjet layer removed because it interferes with developing chemicals. The effect is caused by light reflecting back through the film from the film back after passing through it once. The remjet layer prevents this from occurring when used as movie film stock.
The film was processed by our usual lab and scanned by them. Interestingly the 50mm lens on the 6x7 film has almost the same angle of view as the 28mm on the 33x44 sensor.
Of course, this is a fun comparison, with absolutely no hint of the scientific process.
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