Back Modifications (4)
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Lamp

By paulbroad
Tried for effect. The sun is directly behind this street light in Whitby. Wanted it to look bright and lit.

ISO100. EOS 7D with 18/125 OS Sigma at 125mm actual. Minus 2 stops compensation. Direct viewfinder observation. About 1/2000 @ f11 - much of the glare was nullified by the lamp.

( A comment here, viewing the sun directly is dangerous, I know. Using a DSLR viewfinder means you are viewing a virtual image, not a direct image. Do not view with direct vision viewfinders! Even then, the sun can damage the various sensors in the camera. Keep time to a minimum and do not use live view for long - you are then putting a full focused sun onto the sensor and can ruin it.)


Paul

Tags: Light Sun Bright Flash and lighting

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This photo is here for critique. Please only comment constructively and with suggestions on how to improve it.

Comments


xwang 7 55 8
19 Nov 2012 11:51PM
Superb shot,beautiful light control. really wonderful.. I love it. I learned a bit about the edge part, the white coloured edge looked nice.. showed the reflection. I wouldn't know what to do with it before...
I'm a bit baffled by the terminology. I had to find out what direct vision viewfinder was..Is that the most compact cameras use ‘direct vision’ optical viewfinders which are separate to the camera lens itself? DSLR is a kind of reflected image, so you call it "a virtual image"? Is it more dangerous to look into the sun through zoom lens (long lens) than the shorter lens? As I remembered that if I put the magnifying glass under the sun, the 'focal point' could set the paper on fire..as children's play...I just wonder if there is any connections theoretically on camera lens, as a better& more expensive magnifying glass. Just a thought..
BTW, thank you very much for your critique on 'boat..', Paul.
Jas.

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arhab 4 43 2 Indonesia
20 Nov 2012 3:43AM
I guess you are right Jasmine, I never think about that, i remember now... i believe if too long, we expose o the sun, some of the camera part will broke.

Now about the lamp, i think the lamp is slope a little...
Philo 6 99 83 England
20 Nov 2012 7:45AM
Well seen and executed, Paul, a fine graphic image. The only issue I can see is that it isn't quite straight, as pointed out by arhab. I have sorted this in my mod, centralised it and added a slight vignette.
Phil
paulbroad 9 117 1075 United Kingdom
20 Nov 2012 8:14AM
Thanks, all. Jas, you have it about right with viewfinders. The SLR projects the image onto a translucent screen, so you are looking at a projection, not directly. It is both brightness and focus point that can do damage. Not sure it matters what the focal length is, just that the lens can bring the sun to a single intense spot.

Obviously, eyes come first, but that intense light can damage a sensor. I once had a Fuji bridge camera and, if you included a bright sun it shut down. Crashed in effect. You had to remove and replace the battery to reset it. Never actually saw any permanent damage though.

Paul
iancrowson Plus
6 211 142 United Kingdom
20 Nov 2012 8:39AM
Very effective capture. I've done a couple of mod, more to amuse myself rather than improvements.
Interesting info about looking at the sun. Best to avoid looking at it anyway especially. Olden times sailors using quadrants (before sextants) were said to lose their sight due to looking at the sun directly and regularly.
Ian
paulbroad 9 117 1075 United Kingdom
20 Nov 2012 9:21AM
Sight is the most precious sense in my book. I have Glaucoma, and you do wonder about years of looking through a lens, both cameras and optical pyrometers. Plus bright burning coke, hot ovens, liquid steel and so on.

Paul
xwang 7 55 8
20 Nov 2012 9:45AM
Thank you Paul.Smile

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