A 500mm lens with OS/IS for $1,400.00
It will sell like hotcakes,. Bigma owners world wide would dump there non OS versions by the thousands, (used prices would plummet) etc etc etc.
Seriously, a 500mm image stabilzed lens at an affordable price would be a huge breakthrough for wildlife shooters.
Personally, I would not give up the 100-400mm for it, as the 100-400mm remains my "light weight" option, but I'm not the target audience. Big Prime owners allready have a way to get to 500mm with IS that works well. The Bigma customer does not yet. (unless they buy it in a Minolta Mount
)
Here's a few more guaranteed sales dynamo's for Sigma; https://photography-on-the.net/forum/showthread.php?t=138564


