Optimo 28-76 looks better at 28mm than at 76. . . this lens could work pretty well in 1.85. . . if you don’t mind a little fall off at the long end.

Optimo 28-76 at 28mm on Alexa XT Open Gate

Optimo 28-76 at 28mm on Alexa XT Open Gate

Optimo 28-76 on Alexa XT Open Gate with 1.85 crop

Optimo 28-76 on Alexa XT Open Gate with 1.85 crop

Optimo 28-76 at 76mm on Alexa XT Open Gate

Optimo 28-76 at 76mm on Alexa XT Open Gate

Optimo 28-76 at 76mm on alexa XT Open Gate with 1.85 crop

Optimo 28-76 at 76mm on alexa XT Open Gate with 1.85 crop