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Very nice...

 

Back in 2014 I did some IR tests with Ilford SFX 200, a B&W film that has extended red sensitivity (up to 740nm) together with a R72 Infrared Filter.  I was using my Nikon F3P and the AIS 50mm f/1.2...  The question was how to determine the exposure...

The R72 filter doesn't have a fixed filter factor and the results depend largely on the ISO sensitivity in use and lighting conditions, bracketing is recommended.  I found that when using Ilford SFX 200 and R72 filter good results could be had using the following guidance as a starting point (note the camera was set for ISO 200):

01: in shaded sunny conditions meter at ISO 3 i.e. 6 steps / FFactor of 64
02: in bright direct sunshine meter at ISO 12 i.e. 4 steps / FFactor of 16

At that time I did try with a digital camera, but with poor result (Canon 5DII).  I understand that a lot depends on which camera you are using.  FYI: Rock Kenwell has a write up on how to "simulate / enhance" the IR effect in post processing...

How did you determine the exposure?

Great results...

Casey

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28 Comments view entire thread 

Infra Red Landscapes

 
By: xplorer2 : July 3rd, 2018-09:50
Decided to try out some infra-red landscapes on the Leica Q which is my current go to camera. I love the 28mm Summilux lens and its almost a do it all camera for what I shoot. In the realm of things for Leica, this camera to me is value for money. I know ...  

Bravo!! Amazing!

 
By: farkbinder01212 : July 3rd, 2018-10:59
Love how the movement of the clouds is contrasted against the lush, carved-in-place foliage!

Have not tried it out on the M240 Christian

 
By: xplorer2 : July 3rd, 2018-19:29
But I reckon that it may well work though the exposures and settings will probably need to be tweaked to find the working combination for the M240

Love the effect.

 
By: AuHavrePro : July 3rd, 2018-12:04
Was thinking about trying it out myself! Cheers, Filip

Thanks Filip,

 
By: xplorer2 : July 3rd, 2018-19:35
IR is quite fun as it gives a surreal field to foilage and landscape. Does not work on all subjects though

I believe....

 
By: AuHavrePro : July 3rd, 2018-19:43
my main interest in researching IR photography was night sky images. Cheers, Filip

Very nice...

 
By: cshimokita : July 3rd, 2018-15:04
Back in 2014 I did some IR tests with Ilford SFX 200, a B&W film that has extended red sensitivity (up to 740nm) together with a R72 Infrared Filter. I was using my Nikon F3P and the AIS 50mm f/1.2... The question was how to determine the exposure... ... 

I bracket my shots like crazy

 
By: xplorer2 : July 3rd, 2018-19:34
in figuring out which exposure timing will give the best result. On the Leica Q, I tried not to extend the exposure too long as you will risk the foilage getting blurred with movements from the wind etc. So I try to have an exposure less than 8 seconds an... 

Thanks for that feedback...

 
By: cshimokita : July 4th, 2018-00:48
I have to give it a try on digital... I enjoy a bit of IR ; ) Edit: manual focus? Did you have to adjust the distance for IR?

For focusing

 
By: xplorer2 : July 4th, 2018-07:55
I basically used manual hyperfocal zone focusing based on f8 aperture so that it gives me maximum depth of field set at f8. Funny thing is that the Leica Q even though with the R72 IR filter on it is still able to auto focus when you set the shutter speed... 

interesting...

 
By: cshimokita : July 4th, 2018-14:18
When I was using the R72 I could not focus through the filter... too dark. I was focusing at near infinity so even though there was an IR focus adjustment indicator on the lens I don't remember it as being that critical. Got to love the Leica Q

Interesting IR

 
By: Quan : July 5th, 2018-22:01
What adapter is use to mount those filter...thanks