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UER Forum > Archived UE Photo Critiques > Tunnel Photography (What'd I do wrong II) (Viewed 508 times)
Max12 


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Tunnel Photography (What'd I do wrong II)
< on 5/11/2008 9:46 PM >
Posted on Forum: UER Forum
 
You guys gave me some good tips in this thread regarding low light situations. So, here's another kind of similar set.
This building has lots of interesting utility rooms, mechanical rooms, rooftops, etc. It seems most of these inaccessible rooms have either very small tunnels or passageways that look like tunnels but upon closer observation turn out to be only a few feet long. That is exactly what we were expecting when went into this room. We were pretty shocked when I shone my flashlight down this supposed closet. The tunnel was huge, and it was connected to some other ones. Anyway, here are the pics. They're all taken with a Canon EOS 10D, and a Canon EF 14-40mm f/4 lens.

Here's the tunnel. Lit with a 6D mag lite, 30 seconds at f/11.


And again. Different Angle. 30 seconds at f/22


This one is lit with a couple of LED's. This section of the tunnel is the most interesting, because of the pool dividers. 30 seconds, f/16


Different section: 30 seconds, f/16


30 second, f/22



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Re: Tunnel Photography (What'd I do wrong II)
<Reply # 1 on 5/11/2008 10:32 PM >
Posted on Forum: UER Forum
 
why did you use such high f's?

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Re: Tunnel Photography (What'd I do wrong II)
<Reply # 2 on 5/11/2008 10:52 PM >
Posted on Forum: UER Forum
 
Posted by musket boy
why did you use such high f's?


To make sure more was in focus? Duh.

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Re: Tunnel Photography (What'd I do wrong II)
<Reply # 3 on 5/11/2008 11:38 PM >
Posted on Forum: UER Forum
 
i'm really digging those pool dividers...look like really big worms going down that tunnel. i think i like the first shot the most.

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Re: Tunnel Photography (What'd I do wrong II)
<Reply # 4 on 5/13/2008 12:57 AM >
Posted on Forum: UER Forum
 
oh man they're sick. Shooting wide-angle was...so cool. The tunnel is considerably smaller than these photos show

We were experimenting with aperture values to get a better feel for low-light photography, and we wanted especially to capture the sharpness of those pool dividers you see there, that's why the f-numbers are so high.

We also experimented with LED and incandescent light, which I found very interesting. I love the light cast by the maglite, it just throws such a powerful beam. Max and I were in the tunnel, setting up, I pulled out the maglite and told max to turn off all the LEDs. We were in pitch darkness. I switched on the maglite and light blossomed out, illuminating the entire tunnel--it was a thing to see. The LEDs cast a cold light that I like in a different respect. Their bluish glow is interesting with the blue of the pool dividers, but I prefer the yellow light from the maglite on the yellow of the dividers.

We took a picture of a fork in the tunnel, and lit one side with the LEDs, the other with the maglite. Max was skeptical of combining lights like this, but I liked the end result:

-
-
We had some problems with the higher f-numbers. Sometimes they were fine, but we often experienced noise issues. We bracketed some shots, changing the f's, and you can see the noise differences:

f/22, 30sec (iso 100)


f/13, 30sec (iso 100)


f/4, 30sec (iso 100)


Some shots at f/22 were fine though, like some max posted. Why do you think that is? We definitely got a better depth of field, even the difference from f/16 - f/22 was quite noticeable at full-resolution, when the shots were free of noise.

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Re: Tunnel Photography (What'd I do wrong II)
<Reply # 5 on 5/13/2008 6:46 AM >
Posted on Forum: UER Forum
 
About these last 3 shots:

30 sec @ f22 just wasn't enough. These came badly underexposed and the camera compensated with the horrible noise. You should try bulb mode with 3 min+ exposures.

Are you shooting JPEG or RAW?

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Max12 


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Re: Tunnel Photography (What'd I do wrong II)
<Reply # 6 on 5/13/2008 10:49 AM >
Posted on Forum: UER Forum
 
Posted by baleze
About these last 3 shots:

30 sec @ f22 just wasn't enough. These came badly underexposed and the camera compensated with the horrible noise. You should try bulb mode with 3 min+ exposures.

Are you shooting JPEG or RAW?

All the shots on this page are shot in RAW, then converted to jpeg. We would have used bulb mode if we'd had a remote.
[last edit 5/13/2008 10:50 AM by Max12 - edited 1 times]

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Re: Tunnel Photography (What'd I do wrong II)
<Reply # 7 on 5/13/2008 2:09 PM >
Posted on Forum: UER Forum
 
You need to move the light around a lot more, so you dont get the hot spots.

It takes awhile to get the hang of so just keep doing it.

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Re: Tunnel Photography (What'd I do wrong II)
<Reply # 8 on 5/13/2008 3:20 PM >
Posted on Forum: UER Forum
 
You need to soften your light (use some layers of wax paper), use a higher fstop, and start shooting at a low ISO (nothing over 100) for more then 30 seconds. Get a remote for your camera and this will be easier.

[last edit 5/13/2008 3:20 PM by Air - edited 1 times]

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Max12 


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Re: Tunnel Photography (What'd I do wrong II)
<Reply # 9 on 5/13/2008 7:47 PM >
Posted on Forum: UER Forum
 
Posted by NickSan
You need to move the light around a lot more, so you dont get the hot spots.

It takes awhile to get the hang of so just keep doing it.


what about sharp shadows?

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Re: Tunnel Photography (What'd I do wrong II)
<Reply # 10 on 5/14/2008 1:02 AM >
Posted on Forum: UER Forum
 
Sharp shadows? How so?

100984.jpg (45 kb, 640x426)
click to view


This pic was done with active painting, and had a blue LED light illuminate the ceiling. Camera settings were: ISO 200; f/6.3; time 1:49; no NR.

Just paint the object with light (like painting with paint), and you'll get an even amount of light. Experiment with it on the same subject (several shots), and you'll know how much light to use with what settings for general light exposure subjects.

Be sure to shoot in RAW mode, and using a remote or trigger is beneficial to your shots.

Look forward to your third submission.

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Max12 


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Re: Tunnel Photography (What'd I do wrong II)
<Reply # 11 on 5/14/2008 1:10 AM >
Posted on Forum: UER Forum
 
Yeah that makes sense. I just meant that the shadows will be sharper if the light source doesn't move.

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Re: Tunnel Photography (What'd I do wrong II)
<Reply # 12 on 5/14/2008 1:24 AM >
Posted on Forum: UER Forum
 
Well, unless flooding an area with light, you normally would want to move it around to get more fill.

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UER Forum > Archived UE Photo Critiques > Tunnel Photography (What'd I do wrong II) (Viewed 508 times)



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