Which filter for IR film for Rolleiflex?

[jpa66]

I need to get a Bay 2 IR filter and was wondering if it's worth it to get a dedicated IR filter or simply a red filter. I'm planning to get a B+W one new, and the cost difference is nearly three times greater for the dedicated IR one. So, is it worth it?

Also, can you use a hood with the B+W filters like you can with the Rollei ones?

Thanks,
Jan

 

[sevo]

YMMV - you won't see the IR hallmark Wood effect from light to medium red filters, and strong IR filters are past the range of all currently available film, so whatever film based IR photography there is left is now restricted to deep red to relatively mild infrared filters. Sensitivities drop massively towards the IR end - if you want a stronger effect from a more decidedly IR filter, you must use a tripod as you'll need exposure times well beyond a second even in brightest daylight.

 

[mfogiel]

If you go on maco.de, I believe they list some Heliopan filters for Rolleiflex, and you should find also the links to photo examples with various solutions.

 

[charjohncarter]

I have a bayonet (in my case I) to 49mm adapter. I use my Hoya R72

He has bayonet I, II, III with few popular filter sizes(at bottom of the page, good service):

http://camera-depot.com/TLR.htm

 

[jpa66]

YMMV - you won't see the IR hallmark Wood effect from light to medium red filters, and strong IR filters are past the range of all currently available film, so whatever film based IR photography there is left is now restricted to deep red to relatively mild infrared filters. Sensitivities drop massively towards the IR end - if you want a stronger effect from a more decidedly IR filter, you must use a tripod as you'll need exposure times well beyond a second even in brightest daylight.

¥eah, I know all about the new IR film. I have a couple of rolls of the Efke non-halation-backed stuff that I want to try out. I do plan on using a tripod with the 'flex ( and taking those nice long exposures ). It's a total bummer that HIE is long gone, and I never got a chance to use it in 120mm.

 

[jpa66]

I have a bayonet (in my case I) to 49mm adapter. I use my Hoya R72

He has bayonet I, II, III with few popular filter sizes(at bottom of the page, good service):

http://camera-depot.com/TLR.htm

Thanks, Carter. I'll probably just go with a red filter.

 

[charjohncarter]

Thanks, Carter. I'll probably just go with a red filter.

If you are using Efke IR820, you will be disappointed. Your results will be like a red filter on TriX:

 

[jpa66]

If you are using Efke IR820, you will be disappointed. Your results will be like a red filter on TriX:

I thought that the use of a deep red filter on the Aura 820 was supposed to give the infared look. Am I wrong?

 

[charjohncarter]

Well, give it a try, but Aura is the same film with some change something to do with the anti-halation layer. The above is with a red 25 filter. And this is with a Hoya R72:

 

[sevo]

I thought that the use of a deep red filter on the Aura 820 was supposed to give the infared look. Am I wrong?

The near red sensitivity of Efke is that much stronger than the infrared that even deep red filters lose most of the Wood effect. It is a tricky balance as you don't want to cut much of the IR either, or exposure times may approach eternity - in my experience mild true IR filters (with the nominal response at 690-720nm) perform best with it.

Ilford SFX and Rollei IR are traffic surveillance films and pretty fast in the near infrared - these do much better with deep red filters (on SFX, I've achieved the Wood effect even with a light red in suitable weather), and perform nice with 720nm as well. But they already deliver poor to no results with filters for the mid 800nm range, where Efke still works, dramatically, if you have a suitably bright IR scenery. Unfortunately neither is a full replacement for Kodak HIE, which was as fast as the traffic films down to a spectral range well past Efke...