Canon 5d Mark II Infrared Test

[misterx]

It seems the 5d Mark II is slightly less infrared sensitive than the Mark I, but with suitably long exposures I was still able to get some IR magic. Usually I convert IR to monochrome, but for some reason I was really digging on the hues the filter was producing, so I desaturated them a bit and went with it.

Results are below... note that these pics seem to have a hotspot near the center. I believe this was due to a smudge on the back of the lens. I didn't notice the hotspot until I downloaded, and went searching for the cause. Nice greasy smudge, near dead center on the rear glass. Can anyone confirm this can cause a hotspot in long exposures?

No idea how I managed that one... I am so careful. Alas. Anyway, I'll retest, sans-smudge, soon. The trees look excessively fuzzy because it was windy, and these were 6-15 second exposures.

1




2


3


4


5

Comments

[alby.livejournal.com]

Are you using the same lens that you used before? some lenses are prone to creating hot spots in IR

[misterx.livejournal.com]

No, this is a new lens. But I'm REAAALLLY hoping it was the smudge.

[alby.livejournal.com]

Take a look at what the folks at the IR community say about hotspots for IR:

http://irphotocom.proboards.com/index.cgi?board=gear&action=display&thread=66

I have seen hotposts using a lens in my IR-converted camera but not when I use the same lens in a regular camera.

[misterx.livejournal.com]

Thanks for this. The example certainly looks like the hotspot I was seeing. :( This will be most disappointing if it's a function of the lens, I had hoped this lens would be superior to the f 1.8 I had used previously.

[alby.livejournal.com]

They react totally differently to how they react to visible light. You can always use a cheapo lens and may turn better for IR

[misterx.livejournal.com]

Yeah, I just found several lists of good and bad lenses, and the one I am trying to use is on the "bad" list.


Good

Canon EF-S 10-22mm f/3.5-4.5
Canon EF 17-40mm f/4 L
Canon EF-S 17-85 f/4-5.6 IS
Canon EF 24-70mm f/2.8 L
Canon EF 24-105mm f/4 L IS
Canon EF 28-135mm/3.5-5.6 IS
Canon EF 28mm f/2.8
Canon EF 50mm f/1.8 MKI
Canon EF 50mm f/1.8 MKII
Canon EF 70-200mm f/4 L
Canon EF 75-300mm f/4-5.6 IS
Canon EF 135mm f/2 L
Canon EF 100-400mm f/4-5.6 L IS
Canon EF 100mm f/2.8 Macro
Canon TS-E 24mm f/3.5 L
MTO 500mm f/8
Sigma 400mm f/5.6
Tamron 28-300mm XR



Bad

Canon EF-S 18-55mm f/3.5-5.6
Canon EF 16-35mm f/2.8 L
Canon EF 20mm f/2.8
Canon EF 35mm f/2
Canon EF 24-85mm f/3.5-4.5
Canon EF 28-70mm f/2.8 L
Canon EF 28-105mm f/3.5-4.5
Canon EF 35-80mm f/4-5.6
Canon EF 50mm f/1.4
Canon EF 50mm f/2.5 Macro
Canon EF 70-200mm f/2.8 L IS
Canon EF 70-300mm f/4.5-5.6 DO
Canon EF 85mm f/1.8
Tamron 17-35mm
Tamron 19-35mm
Tamron 70-300mm Macro
Tokina 12-24mm