lens flare?

[Xmas]

indeed the coating makes no real difference at all.

My favorite triplet is an uncoated Fed I lens from '36 but Id not agree that it is flare free, if it is compared with a coated Elmar or coated Fed then they will all flare.

I've had hot spots in middle like the OPs.

 

[Regular Rod]

And yet Erwin Puts describes the un-coated and coated versions of the Elmar as being very flare resistant, indeed the coating makes no real difference at all. Now I'm not going to disagree with him, but it seems to me that banging on about flare before the other possibilities have been eliminated is likely to veil the truth. And particularly as it is so uniformly central in the image and seemingly independent of the type of light that does induce flare. It is in other words a fixed phenomenon most likely caused by a mechanical or optical fault, rather than an intrinsic design characteristic of the lens.

Steve

...and he has no trouble when using a different body!

RR