Hi , recently I know lots of modelers who wants to make a model with A-POSE because of the shape of shoulder which make character in a relaxed pose . But some animators want to animate model with T-POSE, which makes animators easily to control axies for animations . I wonder if what is the best way to do in 3D companies? or maybe there are other reasons that I don t know . Thank you !
T-POSE or A-POSE ?
hazmondo
#2
I think an A pose is best.
It’s slightly more relaxed which prevents texture stretching in the shoulders but more specifically for rigging it can help prevent flipping for upper arm twist joints.
As an example consider if you had a character in a T pose and you were using standard techniques to setup twist joints, then those joints would flip if the character rotated their arms either down 90 degrees or forward 90 degrees and it couldn’t be prevented, that’s a well established issue.
If you have the arms at a 45 degree angle then you can rotate the arms down without flipping and choose the up node/up axis of the twist system so that you can rotate the arms forward 90 degrees without flipping.
Also I’ve never heard of an animator complaining about the rest pose of a character because they automatically expect the character to work, no matter the orientation of the arms (although riggers sometimes complain about the pose ;))
Cactus_Dan
#3
Howdy,
Well, A-pose vs. T-pose is a personal preferance, and personally, I prefer a T-Pose, because that puts the binding pose of the arm half way between the extreme poses:
… which is the general rule of thumb for bind poses.
The setup I use for shoulder twist joints prevents flipping in all poses of the arm:
http://www.cactus3d.com/NoFlipShoulder2.mov
My no flip shoulder setup in the above video I explained in this thread:
http://forums.cgsociety.org/showthread.php?f=54&t=705583&page=2&pp=15&highlight=flip+shoulder
But, if you’re doing the character modeling for someone else to rig, it’s always best to get in touch with the rigger to see what his preference is and then model the character accordingly. 
Adios,
Cactus Dan
armangsb
#4
It is more-less up to studio/personal preferences. Yes, shoulders in A pose are more relaxed and you can get a bit easier to get deformation you want, while in T pose in my opinion it’s a bit easier to create whole rig setup. There is many ways you can avoid flipping of twist joints and neutral pose, either A or T, shouldn’t be a issue for flipping at all.
My personal prefference is A-pose if I’m doing very complex deformations, muscles etc, otherwise T, but again it’s up to studio/client request
Cheers,
Ar.