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For instance, it takes practically no skill at all just to move a light so it actually shines somewhere near the product being offered...  If the producers and marketers have such low expectations of their user base then they needn't worry about selling quality products at all - their customers would have no use for them.  But, I think both are intimately concerned with providing those types of products.  They just need to get on the same page as to decide how best to do that.

Ok think i understand you, however find it rather hard to actually discuss as what you refer to as bad renders might not be the same as me and so on.

However just to comment on your mac donalds example, I agree that they most likely wouldnt sell a lot of burgers if they showed half eaten ones. However when you see a commercial from mac donalds, they always try to show how nice and perfect there burgers are, but as comsumer you also know that what you see on tv is not exactly what you get when you buy one :). And personally i dont eat mac donalds that much, but when i do, i almost always end up being a little bit disappointed to be honest :D