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PostPosted: Wed Dec 20, 2017 4:22 am 
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hare in the bluebells cam trap fusek peters-1.jpg
I am currently converting my whole cam trap dslr system to Infra Red - so it will be a Canon 6d converted, two nikon sb-28s fully modified with filter taken out and replaced by IR filter and camtraptions sensor/flash triggers. What I am trying to find out is if anyone has used Canon 600ex-rt speedlites for cam-trapping and if their standby/battery life is good as the ancient sb-28's - the last think I want to do is mod the batteries as it adds another weak link where things can run out of juice. The IR conversion company have converted canon flashes to IR before but I have at the moment told them to mod my SB28's because they last forever. My kit won't be out for more than a week/2 weeks at a time. So, would love to have feedback - the issue with the SB28's is they are old, no parts are produced for them anymore and the cost of converting them fully to IR is not cheap so I want to invest in something that I won't have issues with in future. I have only used my 600's for high speed flash work for wildlife - they seem incredibly reliable but not sure about battery life. I generally use eneloop pro's.


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PostPosted: Wed Dec 20, 2017 9:21 am 
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I'm curious, what do they do to modify a SB28 for IR? The xenon tubes used in camera flashes put out much of it's light in the IR spectrum. I just put a 950nm 77mm IR pass filter in front of the stock flash and it works great.

Image

Image

This image was taken with two SB28 flashes, one about eight feet above the camera and the other flash to the right of the camera about six feet. It's been a few years but I think the camera was a Fuji IS Pro IR camera. The blur in the lower left was caused by a wet coon nose about an hour before this image was taken.

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PostPosted: Wed Dec 20, 2017 1:22 pm 
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A couple potential issues with the Canon: I don't think standby works when you have them in radio mode -- I know it's that way for the new Nikons -- camera has to stay awake to listen for trigger transmission from what I understand. Second, when I used to use 550/580 ex units, I'm pretty sure they needed to charge the caps when they came out of standby, so you had to wait several seconds to take a picture -- I used them without standby, rigged to a bigass 6V. Dunno what the standby power draw was, but I think that if Canons worked at all well for camera trapping you'd see more folks using them.

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PostPosted: Fri Dec 22, 2017 8:32 am 
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thanks both - JonnyA this is finally the answer I needed so thank you - of course, I did not think about the wireless issues with the canon 600's and probs with waking up - as you say that's why so many trappers use the SB28-s so I will go with those - brilliant.

And TRLcam re IR filters - yes, it is quite easy to stick an ir filter in front of the flash but here in UK we have issues about cam set ups being stolen, so I want the set up to be totally covert - so the conversion company, who do a lot of work for military, security and the BBC take out the flash filter and have one made by a specialist company that is as sealed in as it can get - this takes visibility of the flash down as far as it can go so that also the animals/mammals will be unaware they are being photographed and I am trying to get a 'less startled' look from mammals and the potential to record natural behaviors. Yes, they do get used to flash but that is not what I want from this set up. My friend had self-modified some flash guns for IR but you could still see the red flash - this will be near invisible to human and animal..


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PostPosted: Fri Dec 22, 2017 11:51 am 
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Looks like Jaimie Hall uses 430 ex's and gets a few days of battery life.
If the newer Nikons have a decent standby/wake those could be an option perhaps, like an SB -900. I've used the 600/700 without problem but I feel like someone said they discharge the caps during standby, but I forget.

good luck!

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