“Posing” for a photograph is almost the same thing as altering it later. Neither is the natural setting and thus the emes. In fact, photography itself is problematic from a halachic point of view. Some G’dolim refused to be photographed due to “avoda zora” and other issues with it.
Insofar as dress codes and “uniforms” are concerned, Bnei Torah and Jews have always dressed differently than society at large. And we always had a limited uniform that we conformed to. It varied somewhat, but it was never anything goes. The Sfardim had a different uniform than the Ashkenazim, who had a different uniform than the Yemenites, etc. Just as, l’havdil, each branch of a military (Army, Navy, Air Force) each have their own distinct uniform.
If an officer of the U.S. Navy decided that instead of the mandatory dress blue uniform consisting of a navy blue suit coat, trousers, and white shirt he will substitute the white shirt with a blue shirt and refuses to any longer wear a white shirt, he will be court maritaled, probably incarcerated and dishonorably discharged.
Are we yidden any less?