Ok, so it's all 100% Daz with no post-work in Photoshop or anywhere else. Some info and example (proof) images attached. Some random info on the model and scene:
Model: This is Genesis 8, with custom morphs done in ZBrush and also used Daz parameters to dial in more realistic proportions than the 'ideal' defaults. This is half the battle.
Texture: Highly customized texture set using various commercial skins I bought then edited extensively in Photoshop to add markings, etc, to increase realism at far and medium distances. You will need different texture sets for near and far realism as subtle markings/imperfections needed for near/close-up images get resolve into nothing at far distance.
Hair: the only hair I've found to be realistic enough is Bonnie Hair from the vendor Kool. To your keen eye and point, it's the only hair that has realistic 'scalp' transition...all the others are too abrupt and clean.
Outfit: this is Snuggle Tee which my brother bought recently and I love it -- its basic but real and supports dForce.
Env/Scene: the room is European Style Apartment, Bedroom Scene by Roguey - which I posted about before...it's is BY FAR the most realistic indoor environment set out there -- I dunno how he does it...it's almost as if iphotogrammetry was used for the textures. Unfortunately, its the only product he sells
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Other Stuff: I used various body hairs I've bought -- they make a big difference (arms, face, etc). Also, this is using Misumi Eyebrows from the awesome Misumi character.
Posing: this is as critical as any part of it -- I did custom poses for the most part where I've tried to capture a 'casual / realistic' pose since virtually no pose collection on Daz Store has these.
Lighting: this is the most important part to get right.
Rendering: I use Spectral Rendering Natural, Pixel Filter to 1.2 for far away and 2.0 for close up, and a range of Tone Mapping to fit the lighting. That's basically it.