Hi Chris,ChrisR wrote: is it "worth" having a 2x in the armoury, from the field of view perspective?
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if largest field of view is the primary goal I would tend to answer "no", there are other ways to get more (but not with LWD Mitutoyos). Some experiments with alternative tube lenses didn't show improved field sizes.
If you ask me if I like this lens the answer is "yes".
It is a very well balanced bridge lens between macro and micro. DoF is increased by a big step compared to the 5x, making it a lot easier to handle. Picture quality is crystal clear, sharp, very high contrast, little perspective error/size change when focusing - should work very well for stacking (but I'm not experienced in this field)
The downside is the high price, so it is difficult to make a recommendation.
Horst