Good to hear you are getting good results from your batch of Shanghai GP3!
Well, I got a little side tracked, but finally developed four 4X5 sheets of GP3 and have to say I saw no mottling in any of those sheets. The film was frozen for some time and then cold stored in the fridge for about six or seven months. The box has an expiration date of 07/2023 and was developed in BTTB for 5+5. The negatives actually look pretty good. I think I'll keep this box for use in an old 4X5 falling plate camera and maybe testing certain lenses out.
This was in an unopened box dated 07/23, which might just make a difference. Now that the box has been opened we'll see how long it takes to develop mottling. Or, maybe the batch my box came out of is slightly different.Definitely! Note that my initial results with the film were just fine. The problems only appeared much later on. I should have just shot that box within the course of a couple of weeks/months and there wouldn't have been a problem.
I recently shot a roll. It might just be the developer (The lab I sent it to uses Ilford DD IIRC), but my shots came out incredibly grainy even under the bright sun. It's the grainiest film I've ever shot hands-down, but I don't know if it would be finer.
This looks more like aggressive sharpening...
That's impossible to tell from this scan. As pointed out above, it's an oversharpened scan. What the original looks like, we can only guess at. It's possible that this is quite grainy, but even if that's the case, the question remains to what extent this is inherent to the film itself. Exposure and development play a role in this as well. If you overexpose, scanning through the density will yield a grainy result. Overdevelopment will cause the same problem, and choice of developer has an influence, too.It's the grainiest film I've ever shot hands-down
The Foma looks a little better to me, but nothing to split hairs over when shooting medium format.
HC-110 dilution B:
510-pyro
No worries; having fun is the main priority. I just wanted to highlight it because in this case, it's a relevant issue and I think GP3 and Fomapan 100 end up being very close in terms of average granularity.
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