Originally posted by UncleVanya The claim was about flattened features, I think we can agree my subject was not flattened even at 200mm on APSC. I've used 400mm on APSC for some 3/4 candid head shots. Working distance is long with longer lenses - that is true. But the claim that someone shooting 135mm on APSC wouldn't like 200 on full frame based on features flattening or even distance to subject is silly. Many will find it too long but generally those people won't already like to shoot 135 on apsc for this purpose.
You could do a portrait of Jimmy Durante with a 600mm lens and do OK.
The confusion that Paul is having is in thinking that a telephoto compresses things. It’s not the lens, it’s the distance to the subject that is giving the effect.
From a field of view perspective (I know, sad play on words), a 135 on APS-C will be nearly identical to a 200 on 35mm and working distances will also be close to identical. If you like one, you will like the other, and you will be the same distance from your subject with both.