When taking product photos, is it generally better to just display the product, in high contrast to the background or do pictures with props generate more interest? I've got my light tricks down and everything but I wonder if props add to the appeal? For instance, a goat milk bar in a pic with a glass of milk? Beyond taking the picture itself, should some kind of image editing take place? As in brightness, contrast, color saturation and the like?
Also, should the product as it comes wrapped be included in the image, or just the naked bar?