looking for a macro lens

Ed Okie wrote:Focus ring movement - what is the factory-spec to look for (with any brand) that reveals the amount "spin" required when doing focus-layer shooting? It seems to be proprietary information with every mfg. (along with "does a lens extend outward, or maintains the same length?")
 
To wit: I use a Canon 180mm macro and mount convertor to a Sony a7RIII. The ring movement frame -to- frame for focus-layer images is annoyingly - tiny - approximately 1/32" inch. Net result: difficult to maintain uniform focus spacing.

Frankly, I prefer using the Zeiss Batis 85mm or 135mm with a mount spacer. It's focus-ring movement (in manual mode) is a delight to use, approximately 3/8" frame-to-frame, relatively easy to maintain consistent spacing.

Ed Okie wrote:

E.J. Peiker wrote:My favorite macro lens for Sony FE is the Voigtlander - it's a little longer in focal length so a bit more working distance and absolutely superb IQ.

Focus ring movement - what is the factory-spec to look for (with any brand) that reveals the amount "spin" required when doing focus-layer shooting? It seems to be proprietary information with every mfg. (along with "does a lens extend outward, or maintains the same length?")
 
To wit: I use a Canon 180mm macro and mount convertor to a Sony a7RIII. The ring movement frame -to- frame for focus-layer images is annoyingly - tiny - approximately 1/32" inch. Net result: difficult to maintain uniform focus spacing.

Frankly, I prefer using the Zeiss Batis 85mm or 135mm with a mount spacer. It's focus-ring movement (in manual mode) is a delight to use, approximately 3/8" frame-to-frame, relatively easy to maintain consistent spacing.