80 macro C vs N

<p>Hi All, <br>

Quick question...is there an optical difference between the 80mm f/4 macro C and the 80mm f/4 macro N. I know the barrel and coating are different but how about the optical design and/or performance.<br>

Thinking of getting one to use on a Mirex T/S adapter on Canon EOS 6D.<br>

Thanks, <br>

JD</p>

<p>I believe that you are referring to the Mamiya 645 80mm lens, correct? Need to know who made the lens first. :)</p>

<p>Ooops! I do indeed mean the Mamiya 645 80mm f/4 macro lenses.<br>

Silly me...<br>

JD</p>

<p>Idle speculation -</p>

<p>Quickly looking in a pile of manuals lying about, both are 6 element lenses of seemingly rather similar optical construction (apparently). I cannot contrast both as I only have the "C". I know mine performs nicely, and I'd suspect the N coating helps a bit more with flare, etc. See pic below.</p>

<p>Jim</p><div></div>

<p>Jim,<br>

Thanks, that's just the info I was looking for and couldn't seem to find anywhere. They certainly do look to be the same.<br>

Guess I'll go looking for a "C" version, if there's a price difference.<br>

JD</p>

<p>Nice work, Jim.</p>

<p>I am 99% certain that this was one of the great majority of M645 lenses which underwent no optical formula change (other than coatings) from C -> N. </p>

<p>Ray,<br>

That's probably true, but there were some that are reputedly much better in the "N" versions as compared to the "C" type.<br>

Glad the 80mm macro isn't among them.<br>

JD</p>