Above: With just some subtle weathering this example highlights what can be done with the Airfix IS-3 out of the box. This was produced by ATF member 'Real Thing' and I think he has done a wonderful job considering the age of this kit.
You can follow the complete build review of the above model here: Airfix 1:76 Joseph Stalin JS-3 Tank (A01307) Build Review
The builder lists the problems with this kit in detail, but I think you can tell from this photo that a good amount of simplification has gone on and the overall felling is one of an absence of character (I always think it is the small fiddly bits that add realism to a model). If I had to describe the finish effect in one word it might be - bland (no offence intended to the model maker, he has obviously done a very good job with what he had).
So what could a good braille scale IS-3 look like? Well I featured a model done by Barış earlier in the week, but I didn't show his finished model. Well here it is for comparison...
A bit of a difference eh? You can see more shots of his finished IS-3 here: Roden IS-3 Stalin **completed** (by Barış Bayar)
I can immediately tell the sort of small detail I would like to add to the Airfix model to give it a bit more realism - the turret grip rails stand out as does the AA gun and accompanying ring. My main worry at the moment is what to do about the Airfix's thick vinyl tracks. Hmmm.
Further example: Dyzio - 1/72 JS-3 (IS-3) Polish Army - Trumpeter