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Filtration Experiments

Started Jan 22, 2020 | Discussions thread
petrochemist Veteran Member • Posts: 3,619
Re: Filtration Experiments
1

BrokenPhotography wrote:

NOTE: Because I was unable to get support for deleting or editing the topics title,(https://www.dpreview.com/forums/post/63308716) I've had to create a new topic based on a different subject.

There's on on going debate with several members here and other sites who are experiencing issues with ND or Polarization filters on their mirrorless cameras. For the past year I've tested 6 major brands and 3 not so major brands a total of 12 different ND, Graduated ND and Polarization filters.

For more than 1 year, I've purchased, tested then returned filter like B&W, Hoya and tiffen only to learn that none of these filters will work on my Canon M6 camera. it's like the camera views beyond the filter rendering the glass/plastic or resin filters obsolete.

Given that the filters are physically blocking some of the light coming through the system your camera can't render them obsolete. It's probably just changing the ISO so the effect is not seen (keeping the same shutter speed despite the reduced light).

Cameras are clever but they can't work out what light has been blocked by an external filter, they just react to what gets into the lens.

It would be different if you were talking about UV filters, digital cameras are barely sensitive to UV, so this change is ignored.

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