Pictures never give said persons justice.
Take a blind date, for example. A friend wants to hook you up with a co-workers, etc. Said friend shows you a picture of him or her. You seem intrigued - yet pick apart some of the photo. "Is his hair really that long?" "She looks a little chubby - I thought you said she worked out?" Etc, etc, etc.
Then when you meet the person - body language, personality, style, charm - all that - comes to life. Then and only then, I think, does a person make the proper assessment.