Has anyone tried adding a filter holder to lens adapters?

To resurrect this old thread I'd note that I've been trying to fit filters into some PK to M43 adapters; there's considerable room inside, even a bit of a "shelf." A 37mm glass filter popped in nicely. It worked with one lens, a 35mm, and an adapter that could go past infinity (I'm mostly using this for landscape, so I need infinity). Using the adapter/filter with an 8mm fisheye and a 16mm was a bust though.

Going to try a gel instead. Should I just mate it to a piece of plastic or something to hold it in, and what glue would work with a gel? I don't have much experience with them.

BTW, this is for IR. Not a lot of options for fisheye other than rear filters, like some of the UWA Irix lenses come with.

robgendreau wrote:

To resurrect this old thread I'd note that I've been trying to fit filters into some PK to M43 adapters; there's considerable room inside, even a bit of a "shelf." A 37mm glass filter popped in nicely. It worked with one lens, a 35mm, and an adapter that could go past infinity (I'm mostly using this for landscape, so I need infinity). Using the adapter/filter with an 8mm fisheye and a 16mm was a bust though.

Going to try a gel instead. Should I just mate it to a piece of plastic or something to hold it in, and what glue would work with a gel? I don't have much experience with them.

BTW, this is for IR. Not a lot of options for fisheye other than rear filters, like some of the UWA Irix lenses come with.

Fisheye lenses for IR is the main reason of my interest. I remember seeing some examples years ago on a now defunct IR forum, taken using gels on the back of a fisheye. (I think it would have been on a DSLR, but I'm not sure.

Not yet got round to trying it myself - too many other projects.

Normal filters are certainly limited with fisheyes, possible with a 9mm BCL but as that only has a 140° FOV it's not what most people think of as a fisheye. With a typical fisheye you end up with results more like this: https://flic.kr/p/RENkBq IIRC that was with the filter touching the lens!

petrochemist wrote:

robgendreau wrote:

To resurrect this old thread I'd note that I've been trying to fit filters into some PK to M43 adapters; there's considerable room inside, even a bit of a "shelf." A 37mm glass filter popped in nicely. It worked with one lens, a 35mm, and an adapter that could go past infinity (I'm mostly using this for landscape, so I need infinity). Using the adapter/filter with an 8mm fisheye and a 16mm was a bust though.

Going to try a gel instead. Should I just mate it to a piece of plastic or something to hold it in, and what glue would work with a gel? I don't have much experience with them.

BTW, this is for IR. Not a lot of options for fisheye other than rear filters, like some of the UWA Irix lenses come with.

Fisheye lenses for IR is the main reason of my interest. I remember seeing some examples years ago on a now defunct IR forum, taken using gels on the back of a fisheye. (I think it would have been on a DSLR, but I'm not sure.

Not yet got round to trying it myself - too many other projects.

Normal filters are certainly limited with fisheyes, possible with a 9mm BCL but as that only has a 140° FOV it's not what most people think of as a fisheye. With a typical fisheye you end up with results more like this: https://flic.kr/p/RENkBq IIRC that was with the filter touching the lens!

Yeah, I saw this video and wanted to do something similar, but on my lens the rear element protrudes just a tad, so I couldn't use the lens itself, hence thinking of using the adapter instead. https://youtu.be/WjfTFYMPzKs

E Dinkla wrote:

https://www.dpreview.com/news/4227234228/aurora-aperture-launches-adapter-mount-format-drop-in-filters-for-mirrorless-cameras

Met vriendelijke groet, Ernst
No photographer's gear list is complete without the printer mentioned !

I'd not seen those before.

Unfortunately the range of filter types is limited to ND filters & one or two others, and it only works on one fairly expensive adapter that can be used with one of my cameras (less than 1% of my lenses fit this direct and none are compatible with the AF function).

There are a couple on companies doing clip in filters direct to the body, which while more expensive work with practically any lens/adapter. I've yet to find an adapter that doesn't work with the STC clip in filters... (Even c-mount ones are OK).

I ordered a Kodak Wratten 2x2" gel from Ebay, an 87 (again, for IR).

After trimming it a bit, it fit nicely in a PK (Pentax) to M43 adapter. I secured it with a bit of gaffer's tape.

Seems to work fine with my UWA, like an 8mm Rokinon fisheye. Focus is off but that's perhaps the lens and seems to occur anyway; the gel doesn't seem to significantly change it, if at all.

Changing the gel could get tricky. It's easy to crease or mess them up. And they aren't cheap (at least this 87; maybe there's another way).