I would say camo's in this game have limited effect, besides at night, as there's not too much plant life to hide in on current continents. Also, in the massive scale meat grinder battles they don't really matter that much. Since launch we have been given a good arsenal of decent camo's though that I prefer over my default uniform. My favorites so far:
For Indar I prefer Arid Forest as it blends in perfectly with the Northern seabed desert. Works well in the canyons too:
Esamir has very different daytime lightings that support different camo's. Default TR camo is not too bad actually but Esamir Ice is probably my favorite:
For Amerish it has to be Amerish Leaf. Probably the only one that makes NC look decent:
For night time I'm eagerly awaiting Black Crystalize camo. It's so cool that it probably has a good chance of becoming BRTD standard issue outfit camo:
For now however, Loyal Soldier camo has to do for dark battles:
So what's your favourite camo (post images) and do you find them proven effective at all? (besides Giraffe!)