Zeiss Breathing Test

Gooo Matty. You got some full-frame stills for us?

Did you pick up some Zeiss Glass or just borrowing?
 
Nice. Yeah whenever you get the chance. I held off on my Lenses for a bit and just using what I have for now. So, it'd be good to see.
 
I'm a little confused, is breathing considered a good thing or a bad thing?


Breathing refers to when a lens' optics change the apparent focal lengthfocus. Some (often more expensive) lenses are designed to lessen the degree this effect. Lens breathing does not prevent one from racking focus or following focus with this lens, but it lessens the desirability of any type of focus adjustment, since it noticeably changes the perspective and composition of the shot. slightly when shifting the mechanical.
Answer.com
 
"breathing" is a bad thing; better cine lenses (i.e., higher price tags) go to great lengths to eliminate breathing.

Still-camera lenses don't typically even bother, because breathing is irrelevant when it comes to shooting still photos. It's only an issue when shooting motion pictures.
 
My tripod was a bit loose and my hands not very steady for this one.
I'd say the 85 was a bit less than my nikon and i believe it has a longer focal throw.
also, on the 25 you're going from macro (like 3 inches away from the lens) to infinity.
 
I could be imagining things or I could be wrong altogether but the "breathing" felt strange. The lens barrel moves back as the focal plane shifts further away from the camera. If I'm not wrong, motion picture lenses that "breathe" would have the barrel move forward as the focal plane shifts forward.

Do correct me if I'm wrong.
 
What do you mean? There is nothing to correct. Still lenses only have to perform at one focal length within one given frame. It is what it is.

Cinema lenses take this into account, still lenses have absolutely nothing to gain from designing breathing out. It doesn't enter the design equation.

e
 
Yeah I know and I totally agree with what you say overlandfilms, but is it (the breathing) worse with the Zeiss ZF lenses than with the average Nikon/Canon lens?
 
I think what is being said is: sh*t = sh*t , no matter how thick/thin its piled on... its unprofessional.
 
Last edited:
Luzer said:
I could be imagining things or I could be wrong altogether but the "breathing" felt strange. The lens barrel moves back as the focal plane shifts further away from the camera. If I'm not wrong, motion picture lenses that "breathe" would have the barrel move forward as the focal plane shifts forward.

Do correct me if I'm wrong.
Click to expand...

I'm not sure I follow, but does it help you to know that cinema lenses focus rings turn the opposite direction then photography lenses?

Meaning Minimum focusing ----> infinity is clockwise on photo lenses, while cinema lenses are infinity -----> minimum focusing is clockwise....

I might have it backwards but it think i have it right.
 
That would explain the breathing, as the focus and zoom optics counter each other in incremental disparity through the range. Is this really the cause?

e
 
Eh, zut alors ! Ha la la ! Des merdes, ils sont complètement flous. : )

Voilà : C'est la vie

"Breathing refers to when a lens' optics change the apparent focal length slightly when shifting the mechanical focus. Some (often more expensive) lenses are designed to lessen the degree this effect. Lens breathing does not prevent one from racking focus or following focus with this lens, but it lessens the desirability of any type of focus adjustment, since it noticeably changes the perspective and composition of the shot."
 
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