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Infrared on Monochrom

mediumformula

By mediumformula
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mediumformula

mediumformula

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I thought I would start a thread to share and or discuss infrared photography on the Monochrom.  I have been playing around with a 720nm filter on my M11M and enjoying the experimentation and results.  I took a number of shots with the filter this past week in Rocky Mountain National Park.  I have yet to use the filter with a tripod as most of the pics are taken on the fly.  With a tripod I feel like I could get better results at lower ISO.  I am happy to discover that the M11M does a great job, in my opinion, of capturing infrared wavelength with a simple filter. 

Here is a picture of aspen trees. 

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mediumformula

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Here is another shot of the Aspens.  Both these are JPEGS taken directly from camera and unedited except for resizing.  Shot on 35mm Summicron v4 6-Bit coded.

 

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2 hours ago, mediumformula said:

 

I thought I would start a thread to share and or discuss infrared photography on the Monochrom.  I have been playing around with a 720nm filter on my M11M and enjoying the experimentation and results.  I took a number of shots with the filter this past week in Rocky Mountain National Park.  I have yet to use the filter with a tripod as most of the pics are taken on the fly.  With a tripod I feel like I could get better results at lower ISO.  I am happy to discover that the M11M does a great job, in my opinion, of capturing infrared wavelength with a simple filter. 

Here is a picture of aspen trees. 

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nice photo, a bit soft though what was the shutter speed?

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mediumformula

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6 hours ago, jaapv said:

The focus point is on the branch in the middle Probably due to IR focus shift.

Yeah this is something I wanted to ask about.  Some older lenses have Infrared focusing aids on them but Leica lenses don't.  I guess with live view you can use that to focus properly.  I am so used to shooting with the range finder that I didn't think to do this.  I will have to take this into consideration next time. 

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jaapv

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The aids are very approximate. The focus plane depends on the transmission spectrum of the filter as well The best thing to do is to experiment and note which marking on the DOF scale corresponds with the plane of focus. 

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34 minutes ago, mediumformula said:

Yeah this is something I wanted to ask about.  Some older lenses have Infrared focusing aids on them but Leica lenses don't.  I guess with live view you can use that to focus properly.  I am so used to shooting with the range finder that I didn't think to do this.  I will have to take this into consideration next time. 

or just shoot hyper-focal unless you need the bokeh then of course use live view or the eVF

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mediumformula

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3 hours ago, frame-it said:

or just shoot hyper-focal unless you need the bokeh then of course use live view or the eVF

Yes, but this is also difficult to do without a tripod as you need to have long shutter times, even on the M11M with is super ISO capabilities.   I'll try to post some landscape shots taken at infinity focus. 

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1 minute ago, mediumformula said:

Yes, but this is also difficult to do without a tripod as you need to have long shutter times, even on the M11M with is super ISO capabilities.   I'll try to post some landscape shots taken at infinity focus. 

correct, you would need a crazy high ISO to be at least at 1/250 or ideally 1/500

 

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jaapv

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8 hours ago, frame-it said:

or just shoot hyper-focal unless you need the bokeh then of course use live view or the eVF

You cannot as the focus is shifted in IR photography. You must know the amount of focus shift to know what to set you’re lens to. You cannot stop down too much either as you have very little light. The best technique is to focus bracket. 

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18 minutes ago, jaapv said:

You cannot as the focus is shifted in IR photography. You must know the amount of focus shift to know what to set you’re lens to. You cannot stop down too much either as you have very little light. The best technique is to focus bracket. 

actually its perfectly possible at f16 or f22 as it kind of "covers" the full range so for landscape shots its fine.

the only thing is higher iso or a good tripod.

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pippy

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On 8/7/2023 at 9:17 AM, jaapv said:

You cannot as the focus is shifted in IR photography. You must know the amount of focus shift to know what to set you’re lens to...

 

On 8/7/2023 at 9:59 AM, jaapv said:

...use the 5.6  (on an f2.0 lens) DOF mark.  That will probably enable you to use f8. 

Having experienced focus-shift myself - even when using Orange and Red Filters - I carried out some checks of my own and can back-up (roughly speaking) what Jaap says here.

Considering some lenses I have here which have an IR index mark there is quite a bit of variation from one lens to another even within one focal-length group.

FWIW (Pt.1), these are the results for five 50mm lenses and one 58mm;

..........

Leitz Elmar f3.5 = f6.3(*)

Leitz Summar f2 = f2

Leitz Summarit f1.5 = f2.8

Canon (Serenar-style) f1.8 = f5.6

Nikon Nikkor f1.4 = f5.6

Asahi Pentax Takumar (58mm) f2 = f4

..........

FWIW (Pt. 2) here are results for some other f/lengths;

Nikon Nikkor 28mm f3.5 = f4

Nikon Nikkor 35mm f2.8 = f4

Leitz Elmar 90mm f4 = f4

..........

As can be seen with the exceptions of the faster Leitz 50s all the rest use either f4 or f5.6(*) as their recommended setting.

In case there is any doubt about which way the compensation should be made the lens should be near-focussed; i.e. adjust the lens so that the actual indicated focus-distance is set to the further of the f4 / f5.6 index marks.

Philip.

* The Elmar is a 'Black Scale' therfore uses the older aperture range which does not feature f5.6.

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Alan Friedman

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The M11M does a wonderful job with near IR but live-view focusing and tripod are important if not mandatory. These examples taken with Kolari 720nm filter have been posted on the general M11 Monochrom images thread.

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3 minutes ago, Alan Friedman said:

The M11M does a wonderful job with near IR but live-view focusing and tripod are important if not mandatory. These examples taken with Kolari 720nm filter have been posted on the general M11 Monochrom images thread.

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excellent shots

i haven't used my 720nm camera in a while as im addicted to 850nm.

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37 minutes ago, mediumformula said:

Does the Monochrom have enough infrared capturing ability to utilize 850nm? 

dunno, i have several infrared-converted-sensor cameras.

here is 850nm with Leica 90mm APO summicron M average shutter speed 'tween 1/500~ 1/1250, 2nd shot was f8 i think

 

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mediumformula

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Handheld at 40,000 ISO on M11M with 35mm Summicron v4 with 720nm filter. DNG significantly edited in Lightroom.  Has an almost painterly look.

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