After seeing something like 9.2 billion vagina's I can say that there really isn't a porn industry standard, which I think is what you're getting at.
I saw a brief documentary recently about it. They were talking about photos and not video, fwiw, and how women would see shooped photos and think there was something wrong with them. It definitely happens but maybe it's not as widespread as the documentary made it out to be. I have no idea. It's obviously not an area of particular concern for me.
Every woman is beautiful in her own way, I just prefer one kind of beauty over another.
My preferences are my preferences... can't help it. BTW, I like small to medium boobs mostly.
Def no reason to feel guilty about your preferences. It seems to me that most of the pressure on women to conform to a certain image comes primarily from other women anyway.
QFT
I think men are much more forgiving than women... I've had this conversation with many women and usually they call bull shit, but when we start talking about characteristics that we like, men end up throwing a wider net.
My wife loves women. Yay me, but whenever I point out someone that I think is gorgeous, she finds an issue. Not always, but usually. I like the variety, she likes the ideal woman.
I'm sure there is a shit load of photoshopping going on (sorry can't get down with the shoop) and one only has to look at some of the Playboy photo-sets to see it. Yet there are plenty of set, even some on Playboy, where the women are as natural as can be complete with stretch-marks and some of them are wildly popular and never inhibit my own fap-time.
I think the idea that porn presents an unrealistic image of woman is largely a myth. There's shit porn out there for sure that idolizes the fake tits, fake tan, fake hair, plasticy looking models... but I think that's mostly passe and really a dying niche.