TTArtisan will release a 50mm f/0.95 ASPH M in titanium finish. The filter thread was reduced from 67mm to 62mm. Same formula as the Black and Chrome versions.
was looking at this vs the standard issue, do you think/know if there is actually more vignette due to the 62mm vs 67mm filter size (not planning to use any filters)
Seems to me to it may largely depend on the lenshood, assuming you are using one. A curved front is more "designed" and "cooler": important features for a titanium collector's lens. It may have zero effect on vignetting.