Using a Neutral Density Filter on a Rear Lens Element

[Hugo Zhang]

A new filter device to be used behind the lens:

https://petapixel.com/2022/01/12/ben...-lens-adapter/

[Drew Wiley]

What on earth does that Benro gadget have to do with LF camera technique? If it hypothetically could be adapted to fit, there is still the question of filters behind lenses not being a very good idea to begin with, optically. And trying to keep true Wratten gels in good shape, especially outdoors? ... I gave up on that long ago. They're just way tooooo susceptible to fingerprints, grime accumulation, creases, and scratches. Not cheap either.

[Tin Can]

Also a new way to add dust!

[Drew Wiley]

The bigger irony is how that Benro gadget is way bulkier and more cumbersome than simple front-mounted adapters. Plus it screws up normal optical distance logistics. Kinda like selling square auto tires. I recall one of those old Far Side cartoons labeled, "Early Business Failures", with some cave man and his fast food stand, selling grilled Porcupine on a Stick, quills n all.

[Tin Can]

It's actually an adapter for putting foreign lenses on various 35's

I have a couple, not that crap

I have Leica R to Nikon Z-fc as example

These are are great adapters but not with a dust hole!