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Full resolution of film!

APO Nikon…!
 

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Oh, I had a senior moment blip alright - should have said Cosina not T-whatever. I'll go back and correct that.
 
I’ve had much better experiences with Cosina-built lenses than T…

In fact, I have a Rikenon 135mm lens made by Cosina and “the same” made by T. The T-made lens is so bad it’s virtually useless. At least I payed very little for it.
 
Well, I was in a hurry to get out the door with neither, but my Fuji 6X9 RF. Then when I came back relaxed, I was thinking better.
 
I believe you mean resistors in parallel. Resistors in series simply have their resitance added: R1+R2+R3 ... for computing total resistance.

Sorry, senior moment, parralel was what i meant, and that is what 1/R1+ 1/R2 etc etc avctually means.