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Brighter days = photography

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zpyder:

--- Quote from: Serious on September 06, 2016, 07:33:26 AM ---

I first noticed Focus breathing on a pair of cheap 70-200mm lenses, this link confirmed it. Also covers the white issue, and a few other bits.

https://www.youtube.com/watch?v=P80BpSQIIto

You can just put a white or camouflage cover on the black lens, although no other manufacturer seems bothered about the issue.  I would have thought keeping the camera temperature down would be more important yet their cameras are all black. And why have a white lens with black rubber? It would be fairly easy to make white rubber instead and the price isn't the concern here.

--- End quote ---

I've noticed the effect before quite a bit when doing extreme macro work and focus stacking, just never heard the effect called focus breathing before. At first I didn't quite get why it was called that, but the more I think about it the more it fits.

As to no other manufacturers using them, I was sure I'd seen other white lenses, Sony make white telephoto lenses, and nikon used to. I don't know about other brands though.

I still maintain it'd be interesting to do some kind of experiment to see just how much effect, if any, the colour of the lens barrel has on IQ.

Serious:

--- Quote from: zpyder on September 06, 2016, 13:49:53 PM ---
As to no other manufacturers using them, I was sure I'd seen other white lenses, Sony make white telephoto lenses, and nikon used to. I don't know about other brands though.


--- End quote ---
Sony at least make a white 70-200 f2.8, with black rubber grips. I wonder if it's to look like the Canon one? Actually it does. Then they did make white A5000 and A6000 cameras too but that was claimed just for 'style'.

Simple test, tape some paper (or cloth) around a lens, take some photos, remove it, then take some more. see if it actually makes a difference.

Binary Shadow:
A couple of shots I got with my 100-400 mk2

781A4076 by Adam Woodford, on Flickr

781A3676 by Adam Woodford, on Flickr

Serious:
Is that the famous bike rider Ivor Fellov?

Looking good so far. Despite the 70-200mm F2.8 being the supposed 'portrait lens' at the moment you should find that the 100-400 works just as well.

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