Infrared with my Rolleiflex 3.5F

campy51 · Mar 26, 2025

I have a Ednalite adapter that takes series VI filters and want to know what R72 filter size I should get. A series vi filter measures around 41mm. Should I buy a 41mm filter and drop it in like the series vi or buy a filter for the inside of the adapter thread which is a hair under 44mm or does it even matter?
Anyone have any tips?

ntenny · Mar 26, 2025

You might have better luck bypassing the adapter and finding a Bay II Rollei-Infrarot filter. I don’t have a Bay II camera, but I didn’t have too much trouble turning them up for I and III.

-NT

Arthurwg · Mar 26, 2025

Maybe shoot SFX with a normal red filter? You actually might prefer it.

Dan Daniel · Mar 26, 2025

A Bay II to 49mm or 52mm is pretty easy to find on Ebay. Might be worth the purchase to open up filter possibilities.

A 41 or 40.5 filter will usually have a thickness with mounting threads and such that a Series VI retaining ring won't grab. You'd have to take some chances to see if a 43mm or 46mm would fit the Series VI after you remove the mounting and just use the glass slug.

There are also 44 to 49mm adapters out there.

blee1996 · Mar 27, 2025

I use Bay II to 52mm adapter, since it is much easier to find 52mm filters. Plus my Nikon lenses use 52mm filters. Since 52mm is very popular, you can find high quality filters at bargain price.

loccdor · Mar 27, 2025

On my Bay I camera, I found a vintage Bay I -> Series 5 adapter ring 522 from Tiffen that works with a Series V 89B infrared filter, though you can see a tiny vignette in the extreme corners. However it doesn't block an outer Bay I lens hood from attaching.

It's possible you might also experience slight vignette with the Bay II -> Series 6.

Sirius Glass · Mar 27, 2025

Use a R23, R25, R29 or R72 filter depending on the affect that you desire and Rollei IR 400 film at ISO 400 and open the lens following the filter factor of the filter of choice.

campy51 · Mar 27, 2025

I have been reading to rate it at either 12 or 6 for R72

ntenny · Mar 27, 2025

campy51 said:
I have been reading to rate it at either 12 or 6 for R72

Bracket, especially for a first experimental roll. I find 6-12 to be about the range that works for Rollei IR; never shot SFX; the old Efke IR I thought was OK at EI 3 in most conditions.

-NT

campy51 · Mar 30, 2025

I am having trouble finding what exactly I need to use a Bay II series 6 adapter on my 3.5F. I tried a 43 to 52mm adapter but it's to small on the 43mm end and I can't seem to find a 44mm R72 so what I am thinking of doing is buying a 43mm filter and removing the glass and using just the glass as a drop in. Anyone have a easier or cheaper way to do this?

loccdor · Mar 30, 2025

Dan Daniel said:
I have that Ednalite item marked '609' and it is NOT for Bay II. It is Bay III. Looks like the seller has it listed incorrectly.

Whoops, thanks! I'll delete it.

JPD · Mar 30, 2025

If you want to use an original Rollei infrared filter it's good to know this:

"The infrared filter features special compensation for focusing difference between visible and infrared portion of the spectrum. Direct ground glass focusing may be employed with full assurance of sharp pictures." (Franke & Heidecke - The Practical Accessories)

itsdoable · Mar 30, 2025

JPD said:
If you want to use an original Rollei infrared filter it's good to know this:

"The infrared filter features special compensation for focusing difference between visible and infrared portion of the spectrum. Direct ground glass focusing may be employed with full assurance of sharp pictures." (Franke & Heidecke - The Practical Accessories)

*** This *** is what makes shooting infrared on a Rolleiflex TLR so nice - full visible light viewing, and automatic IR focus corrections!

Dan Daniel · Mar 31, 2025

JPD said:
If you want to use an original Rollei infrared filter it's good to know this:

"The infrared filter features special compensation for focusing difference between visible and infrared portion of the spectrum. Direct ground glass focusing may be employed with full assurance of sharp pictures." (Franke & Heidecke - The Practical Accessories)

Is this a small diopter correction in the filter? Is that how they achieve this?

Has anyone seen the Rollei IR filter? Is a curved shape noticeable, visually or by touch?

ntenny · Mar 31, 2025

Dan Daniel said:
Is this a small diopter correction in the filter? Is that how they achieve this?

Has anyone seen the Rollei IR filter? Is a curved shape noticeable, visually or by touch?

I’ve wondered about this too. I have two of the filters and I don’t detect an obvious curve. It’s also surprising to me (admittedly with no optics chops) that a fixed adjustment in the filter would work irrespective of the focussing distance.

-NT

JPD · Mar 31, 2025

ntenny said:
I’ve wondered about this too. I have two of the filters and I don’t detect an obvious curve. It’s also surprising to me (admittedly with no optics chops) that a fixed adjustment in the filter would work irrespective of the focussing distance.

-NT

It must have a curve, but I assume that it would be difficult to detect without a spherometer or flatness gauge.

MattKing · Mar 31, 2025

Those filters were probably optimized for films like HIE, so might over-correct for modern near-IR films.

loccdor · Mar 31, 2025

At least on my Autocord, there was a very minute focus shift with infrared - I spaced out that day and forgot all about it, pictures came out fine.

Infrared with my Rolleiflex 3.5F

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