Ilford XP2 developed in Rodinol

I didn't have room to say all I wanted to say in the original post, so here's more. The Massive Dev Chart has an entry for XP2 developed with Rodinal, so I thought I'd give it a try. This shot here was the best of the lot (15). Many of the others were very light, much to my dismay. I did pause a bit at the 18 minutes development time in the Massive Dev Chart, but because I don't have a whole lot of experience with XP2, I went ahead with the recommended time. I wonder if my exposure had something to do with it -- my light meter said f/20 (it was a bright, sunny, late morning), and because many of the scenes I shot were under awnings, I opened the shutter three stops or so to compensate. But even the shots I took in full sun (at f/20, natch) came out far too bright, overexposed. I'd welcome any comments from anyone with more experience than I have developing XP2 in Rodinal. Did the film sit too long in the developer?

Ken, this one looks fine and having no experience of XP2 in anything except C41 I cannot help with times. exposure etc but the burning question for me has always been: Does using any B&W developer still give the benefits that XP2 has in C41, namely very fine grain or in fact non existent grain due to the resultant neg being dye clouds and not silver halide?

Not a rhetorical question on my part. I'd love to see an article that compared the same scene(s) shot with two films of XP2, one developed in a B&W developer such as Xtol( my go to developer) and one developed in C41
I look forward to others' comments

@pentaxuser Thanks for the input, pentaxuser. As you can probably see in the shot above, the grain isn't intrusive, at least not to my eye. It's the tonality I'm not sure of. The shots in my one other roll of XP2 (developed in C-41) had exceptional tonality, I think. Not sure I see it here. A little bit later I'll post another scan of a shot that didn't turn out quite so well. Still don't know if I overexposed the shots or over-developed them. This one was in the tank with the rest of the bad 'uns, though.

Well, I was looking at other negatives from this shoot and decided that I had simply overexposed most of them and got lucky with this one. The fact that I was trying Rodinal with a chromogenic film confused me, I think. As for the tonality, maybe I'm being hypercritical. Back to the proverbial drawing board for more practice, I guess.

Ken do you mean that you used f20 on the aperture setting? Was this because the fastest speed on the shutter settings was not fast enough for f16 so anything less than f20 was overexposure? As a matter of interest what was the required shutter speed at f20?This neg looks like an indoor shot and certainly looks properly exposed.

Even in bright sunshine here in the U.K. I'd need everything to be static so as not to blur at the slow shutter speed required at F20. OK a slight exaggeration but it wouldn't take much in the way of movement at f20 and the shutter speed for proper exposure for blur to occur. I have a P654N and have yet to use it at a higher aperture than f16 and then it is only rare occasions

@pentaxuser Recall that the XP2 ISO was 400 (I noticed with the other roll I shot that the film is "hot," that is, it really responds to the available light). I actually had the shutter speed run up to 1/250. The fastest setting on the lens I used is f/22. My light meter suggested f/20 in full sun, but I had opened up to about f/8 to compensate for the shadows from the top of the booth where the action was. I guess I could have metered it, but the little girl was already looking a little freaked out by the behemoth that is the Mamiya 645 pointed at her. I could just imagine her reaction if I whipped out another alien-looking piece of gear and started waving it around. I'm also thinking that when I moved away from that scene, I might have forgotten to recheck my aperture. Interesting that you don't go above f/16. We're about latitude 42 north here, and because of our elevation (3800 ft MSL -- about 1,160 meters) we get plenty of sun for hours during the summer. Around the solstice, it's possible to read a newspaper outside at 10 p.m. The annual community fireworks show on the Fourth of July doesn't start until 10:15 because it's still light out. Anyway, you see my point -- lots of light. If I had kept my shutter speed at the 1/125 I usually favor, I would have had to go with f/22.