Thats a beautiful photo, I prefer that one myself as well.

As regards photoshop, its actually more honest to photoshop process raw camera files than to let the film developer or camera do it for you. The output of a digital cameras sensor is a blurry off-colour half baked image that most digital cameras (apart from Sigmas SLR's) heavily process before it pops up on the LCD. The camera sharpens, saturates, colour balances and applies a contrast curve based on pre-programmed software that Canon/Nikon/Fuji etc have decided before you take the photo. The more honest approach is to take the manufacturers engineers out of the equation and make these decisions yourself to reproduce what you saw or what you felt at the time.

The same applies to film, you can select a film designed with a particular colour boost/contrast curve (velvia etc.) that does about 90% of what I do in photoshop and this is then processed by the developer which is also a form of manipulation, on top of that many film photographers then use dodging/burning/unsharp/airbrushing techniques to create the final image.

'Straight out of the camera' doesn't mean what it appears to mean, it means the image is straight out of the mini-photoshop programming inbuilt in the camera or the pre-determined manipulation of the film maker and developer.

Of course not much of the above applies to the photo in question because that is more like digital art than a photograph, but at the same time a person with no creative imagination couldn't produce such a fine image.