John Russell
Well-known member
I don't think one is going to find field-flattener lenses in any small monocular.
Field curvature and even astigmatism (where sharp focus at the field edge cannot be achieved by refocussing) is quite noticeable in some top-priced bins.
Give it a try at maximum extension (9x magnification I believe), although it's pretty difficult to hold still. The field is flat and pincussion distortion is negligible.
The 6x18 Zeiss may not be as solidly made as the new Leica Monovid but, IMO is more practical (no additional close-focus lens needed) and is a lot less expensive.
Regards,
John
Field curvature and even astigmatism (where sharp focus at the field edge cannot be achieved by refocussing) is quite noticeable in some top-priced bins.
Give it a try at maximum extension (9x magnification I believe), although it's pretty difficult to hold still. The field is flat and pincussion distortion is negligible.
The 6x18 Zeiss may not be as solidly made as the new Leica Monovid but, IMO is more practical (no additional close-focus lens needed) and is a lot less expensive.
Regards,
John