With Pen-F jpg's, I assume you're meaning to say...
1
...Olympus JPG's in general. And I hear ya as I find the Oly JPG's to be superb.
However, there's another big boy in town that does JPG's as well, if not better - and that is with Fuji.
Look Bro, I shoot extensively with both m43 units and a variety of Fuji models. I can say from experience that with regards to skin tones, you'll fall in love With Fuji jpg's. In fact, many Fuji users have exclaimed that with the Fuji jpg's being so rich and colorful, they don't feel the need to shoot in RAW mode. I tend to agree, although I'm a die-hard RAW shooter anyway and won't stop on that account. So what I do is to shoot both in RAW and JPG fine, so I have both copies of the images on file.
But the reality here is any camera system (from whatever brand) is capable of giving you superb imagery - provided you know what you're doing with regards to photographic principles and your knowledge of the camera used.
IMO (and I can only give you advice based on my usage of these cameras), I find the cameras - in the order listed below - to be superb in the JPG department (in particular with skin tones). They are:
1. Fujifilm cameras (both X-Trans and their Bayer versions).
2. Olympus models
3. Canon models.
Since you know how Olympus JPG's are rendered, allow me the opportunity here of providing you with some Fuji jpg's so as to give you some hint as to the color tonality of that format. Do keep in mind that there are lots of dual Olympus and Fuji users and that's due to the color tonalities being very similar. In other-words, if you love the way Olympus renders colors, then you'll love how Fuji does them.
Shot with the Fuji X-E1 w/XF 18-55 f2.8-4 zoom lens, AWB, ISO 800, Aperture Priority Mode. Flash used was the Fuji EF-42 in bounce mode with Gary Fong's Lightsphere unit attached.
Taken with the Fuji X-M1 and the kit XC 16-50 f3.5-5.6 IS, AWB, ISO 200, Aperture Priority Mode.
Taken with the newer Fuji X-A3 camera (24 MP's featuring a Bayer sensor) and the kit XC 16-50 f3.5-5.6 IS lens. Flash used was a manual Yongnuo model in bounce mode and the Gary Fong Lightsphere unit attached. shot in AWB, ISO 800, Manual Mode.
Taken with the Fuji X-T1 with XF 18-55 f2.8-4 IS lens. Shot in AWB, ISO 200, Aperture Priority Mode.,
Taken with the Fuji X-E2 with the kit XC 16-50 f3.5-5.6 IS lens. AWB, ISO 200, Aperture Priority Mode.
Taken with the Fuji X-A1 (featuring a Bayer sensor) and the kit XC 16-50 f3.5-5.6 IS lens. ISO 400, AWB, Aperture Priority Mode.
Taken with the wonderful enthusiast model Fuji X-30 (12 MP's and a 2/3" sensor). Shot at ISO 100, AWB, Aperture Priority Mode.
Taken with the enthusiast Fuji X-S1 (12 MP's and an equivalent lens of 24-600 MM on a 2/3" sensor). ISO 400, AWB, Aperture Priority Mode.
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Sincerely,
Bernd ("Ben") Herrmann
Fuquay Varina, North Carolina USA