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Has anyone tried adding a filter holder to lens adapters?

Started Dec 31, 2018 | Questions thread
OP petrochemist Veteran Member • Posts: 3,619
Re: No, but trivial to do with 3D printing
1

ProfHankD wrote:

petrochemist wrote:

I've recently seen several lens adapters with built in ND filters.

Haven't tried it, but it would take no more than an hour or two to insert a filter mount or filter tray in any of my 3D-printed adapters.

Of course, filter thickness will degrade optical quality.

Honestly, I haven't found filters all that useful with digital cameras except for special purposes. I suppose a polarizer might be worthwhile... but if the adapter is designed to have a filter with a specific optical thickness, you'd need one even for clear to keep the same rear focus distance, which would still degrade IQ a bit.

With a full spectrum converted camera filters are pretty much essential for every shot, even if it's just replicating the cameras original hot mirror.

Unfortunately I don't have the luxury of a 3D printer, or the skills produce the instructions for an online service... I'm sure this is something I should sort out.

I hadn't originally considered the focus shift adding glass behind the lens will introduce. That does make the idea less worthwhile - but it could still prove a bonus with any lenses fitted via a helicoid such as projector & enlarger lenses many of which don't have standard filter threads, or any at all.

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