How old and how big is the calf? If he is a young calf then I think he is doing fine in his flank at this stage, he is a pretty nice shorthorn patterned steer, depending on how he develops I think he is state fair quality.
Like was said earlier, his feet are pretty short and he is right up on those toes, which adds to the straightness in his leg, I dont know if they trimmed him to short or if he is just naturally short footed, we dont often see em trimming young calves that much. I understand there are a lot of factors adding to how straight his leg looks, and I understand that there is a fine line between just right and to straight these days for a lot of people. As a prospect for me I am still going to say he is to straight in my opinion. If he was a fat steer I probably wouldnt have a problem with that angle as long as he was moving good, but a lot of times these prospects that are that straight have a tendency to get short strided and have issues as they get heavier. If I were feeding him he would be on something like keep em sound, but that is me, i am sure others will tell you differently.
But that is getting picky on an awfully nice steer...good luck with him.