Originally posted by panonski that's a HUGE mistake, even pointed in that way...
I really doubt that anyone from Nikon wants to have advertise images, taken with Sony or Canon...
I see the problem - you (and a few others) don't understand what's actually being advertised - it's the product from the image, not the image itself, nor Ricoh Imaging's capabilities as an advertising agency (which they're not). So it doesn't really matter with what brand they took that product image, and I'd guess very few cares - nobody at all, except some people looking at reasons to complain about.
OTOH, if they published images taken with other cameras while pretending they're taken with a Pentax, images meant to showcase the camera's capabilities... Huawei did something like that (but unlike Ron, their customers got over it).
Wait, Nikon did that too:
Oops: Nikon Uses Stolen Canon 5D Mark II Footage for D800 Promo Video Once again, their customers got over it.
Wait, Sony did it too:
Sony camera ad features competitor?s shot | Adweek And... yep, nobody's talking about it (anymore).