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 One Week at Newfound Lake - Day/Nite Exposed 5Dmk2 Timelapse 
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Joined: Sat Dec 19, 2009 8:16 pm
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Post One Week at Newfound Lake - Day/Nite Exposed 5Dmk2 Timelapse
I got lucky and caught Newfound Lake in Bridgewater, New Hampshire freezing up last week.

One Week on Newfound LakeImage

I have a few behind the scenes pictures in my blog.
You can also download the 1080P full HD version of this timelapse at the bottom of the page in link below.

Link: http://www.tomguilmette.com/wp/my-blog/archives/2706


Wed Jan 06, 2010 8:03 pm
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Post Re: One Week at Newfound Lake - Day/Nite Exposed 5Dmk2 Timelapse
Thanks for posting this here, Tom.

You know, it's funny, because I never really pay attention to that little IR light on the front of the camera, but maybe now I will!


Thu Jan 07, 2010 10:35 am
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Post Re: One Week at Newfound Lake - Day/Nite Exposed 5Dmk2 Timelapse
Is there any way one could disable the IR lamp from the 5D2 menu so it doesn't interfere during long exposure times - especially if it is mounted in an all weather enclosure?
I guess you could always cover the IR area with a bit of gaffer tape.

Thanks to Tom G for the info.


Thu Jan 07, 2010 2:40 pm
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Post Re: One Week at Newfound Lake - Day/Nite Exposed 5Dmk2 Timelapse
IR usually appears bluish. There's an IR sensor on the camera front but no emitter. It's the self-timer lamp - see page 86 of 5DII manual. Tsk, tsk.

EDIT: Confused as to why it would be on during the exposure. Just tried shooting through glass and couldn't replicate the artifact.

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Thu Jan 07, 2010 5:01 pm
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Post Re: One Week at Newfound Lake - Day/Nite Exposed 5Dmk2 Timelapse
Hmmm, I'm now wondering if that's the cause of the occasional red glow I see in longer exposures? See attached, bottom middle of frame. I've seen it on half a dozen shots.
Attachment:
Point-Peron-20-min.jpg
Point-Peron-20-min.jpg [ 196.28 KiB | Viewed 5318 times ]

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Thu Jan 07, 2010 5:53 pm
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Post Re: One Week at Newfound Lake - Day/Nite Exposed 5Dmk2 Timelapse
was told by a still shooter that the IR LED emits light only visable to the CMOS sensor. So you see two little red blotches because of the double pane glass reflection. it was also explained to me that since the camera was in "green square dial" full auto mode, the IR was active for auto focus purposes, even though the lens switch was set to MF.

make sence? correct me if im wrong.

be warned if you mount the canon 5dmk2 in a weather proof housing or out a window, place a bit of gaff tape on the LED!


Thu Jan 07, 2010 9:18 pm
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Post Re: One Week at Newfound Lake - Day/Nite Exposed 5Dmk2 Timelapse
tomguilmette wrote:
was told by a still shooter that the IR LED emits light only visable to the CMOS sensor. So you see two little red blotches because of the double pane glass reflection. it was also explained to me that since the camera was in "green square dial" full auto mode, the IR was active for auto focus purposes, even though the lens switch was set to MF.


Certainly, tape over the red window, but some Qs remain:

1) Why does the IR light appear red, when usually IR appears bluish?
2) Why is 'AF assist' light still on during the exposure?
3) Where is this AF assist light in the manual? The AF-assist light mentioned on p.179 is to do with Speedlites firing their AF-assist light. I wasn't aware the 5DII body any such thing.

Could the red light possibly be from incident light reflecting off the red plastic window on the 5DII body, then off the house's window (both panes), and finally into the lens? I imagine we'll never know.

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Thu Jan 07, 2010 10:12 pm
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Joined: Thu Jan 22, 2009 3:05 pm
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Post Re: One Week at Newfound Lake - Day/Nite Exposed 5Dmk2 Timelapse
Wow, Tom,

What fantastic results. I'm blown away that this came out of an unattended camera in AUTO mode.

Before reading your blog, I was inclined to think that you stitched together several different days. It's amazing how the natural environment can provide 'transitions.'

Did you write the score for this? It really adds to the feeling of perception sped up.

Alex Boxerbaum
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http://www.peristalticmayhem.com


Fri Jan 08, 2010 11:43 am
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