Interesting image. His face has a certain dignity and authority.

I've seen photos from this time where the kilt hose are worn quite low, just over the largest part of the calf. Maybe that's tricking my eyes into believing that the kilt itself is oddly short. Then again, perhaps it's the long underwear that is distorting the shape of his knees in the photo. Sometimes a still photo does not capture the nuances our eyes can detect.

Do you know what tartan he is wearing?