Mick_G

Hi Chris, yep i have seen the port chart you're referring to and as you correctly state, the 90mm lens does not include the cmc2 in the various configurations relating to the use of wet lenses. I really can't wrap my head around the difference in working distance for the same cmc lens on Nikon & Canon when both using a 60mm macro lens. Physics is definitely not my strength. I wasn't actually aware that the issue is the compatibility between diopter and lens although, if as you say, the cmc diopters are designed for for smaller sensors, but can be used on full frame sensors, then i guess it is really a case of comparison. Thanks for the response.

Hey all, just wondering if the cmc2 would provide more working distance than the smc1 on a Sony @6600 & 90mm macro lens. Product info gives the magnification on the cmc2 as 2.8x whereas on the smc1 it’s 2.1x - i’m struggling to see how the cmc2 would provide a greater working distance (it has been recommended to me). Is there something i’m missing? thanks

Good morning from Australia, just a hack u/w photographer hoping to learn.