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Will someone analyse this photo? |
bijitendra
Joined: Apr 20, 2005
Posts: 89
From: Utopia
PM |
Will some experienced K750/W800 camera user analyse this photo and tell me what went wrong?
http://rapidshare.de/files/4350363/Dsc00016.jpg.html
This pic was originally intended for a mobile photography contest and this pic was my final shot but it got screwed.
For the records, i had even taken some practice shots before the train arrived to make sure i dont screw it up but somehow it got all messed up.
This is a resized sample pic and details are not visible here. PLEASE SEE THE FULL SIZED PIC ON THE LINK POSTED ABOVE.
Looking for some advice and explanations
I am not referring to the darkness but the kind of hazy, nonfocussed image i m talking about.
Phones: Ericsson 3618 > Nokia 2100 (thrashed) > Samsung C100 (sold2my best pal) > Samsung X600 (lost) > SE T630 > SE K700 (given to cousin)> SE K750 > SE W800 |
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batesie
Joined: Feb 13, 2004
Posts: > 500
From: London, UK
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looks like you left macro mode on. maybe the contrast of dark and light messed it up? try spot photrometry
[addsig] |
bijitendra
Joined: Apr 20, 2005
Posts: 89
From: Utopia
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@ Batesie
Nops i didnt have macromode on. BTW k750 doesnt have spot photometry, does it?
And once again I wud like to stress the fact that the problem is not the contrast (It was on purpose), but, if u noticed in the FULL SIZE IMAGE, the image is grainy and unfocussed, especially near the coaches of the train.
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Sammy_boy
Joined: Mar 31, 2004
Posts: > 500
From: Staffordshire, United Kingdom
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Nice shot there! The only thing I could say is that the light in the sky behind the train seems to be a bit overexposed and bright, you could perhaps do with photographing a train going the other way, or at a different time of day. Evening or morning when the sun is just setting or rising gives you some really nice light effects that would add a lot to the shot 
Edit: just noticed your comment that the contrast is part of the picture, sorry!
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[ This Message was edited by: Sammy_boy on 2005-08-25 14:20 ] |
Dragonfly_TP
Joined: Aug 11, 2004
Posts: > 500
From: Belgium
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well the train is moving or not? camera of the phone can't focus on a object that is moving towards the camera. Also the picture (the sky) is bright, then the dark train moves in and the camera is too slow to adjust to the darker enviroment and the picture will turn out too dark. (trust me, I know my stuff)
Everything was ugly, but your beautiful face. |
empty
Joined: Nov 24, 2002
Posts: 109
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If you are trying to evaluate the sharpness of the lens try taking several pictures of a fixed subject in a controlled environment. Its difficult to judge based on a single picture of a moving(?) object with a handheld shot. there are too many variables.
The noise looks normal for the darker areas, at least for a camera without noise reduction.
[ This Message was edited by: empty on 2005-08-25 16:46 ] |
turboy
Joined: Jul 01, 2004
Posts: 161
PM |
I think that train driver in the photo is freaking out and probably thinks you are about to sabotage that train dude!
Lucky you didn't get your phone confiscated.
T. |
bijitendra
Joined: Apr 20, 2005
Posts: 89
From: Utopia
PM |
@ dragonfly
Yes buddy the train was at a speed of about 30-40 kmph and moving towards me. Some more tips will be welcome.
@empty
I did try several shots for practice before the train arrived, and all them were fairly good and sharp. Guess Dragonfly's logic is correct.
@Turboy
Yups the driver is curious and wondering what I was upto, so close to the tracks. Especially, here in India, where on-track suicide cases are too frequent, the driver was a bit worried. But once he saw the camera (ok, he never came to know that it was actually a Mobile!), he let off a wide grin! |
Jolitorax
Joined: Jul 31, 2003
Posts: 48
PM |
The exposure is decided as a result of the camera making adjustments according to an average of light intensity of the whole picture frame. Your test shots contained a brighter picture, without the huge dark train, allowing the camera to use a faster shutter speed and/or a smaller aperture size, both factors creating sharper pictures. The faster shutter speed eliminates your own hand movements, and the smaller aperture size increases depht of field.
When the train arrives, the picture frame is filled with a large dark object, and the camera has to make its exposure calculations as an average of the bright sky and the dark train. The result is of course that the sky will end up too bright and the train too dark. And because of the overall darker picture the shutterspeed is slower and/or the aperture size is larger - both factors leading to a less sharp picture. And the train is moving fast, requiring a fast shutterspeed to be frozen and sharp in your picture.
To get this picture right you need to decide which object you want the camera to calculate its exposure from. Is it the train you want to show (thus overexposing the sky) or do you want correct exposure of the sky with an underexposed train (dark "ghost" train). The K750 enables you to adjust brightness of the picture, but it has some limitations compared to an advanced film-based or digital camera.
Still, I think you did a good job with this picture. The K750 has a huge time lag, in a way that you press the button and it lasts several seconds before the picture really is taken. For a novise K750 user the train would have passed before the frame was frozen |
bijitendra
Joined: Apr 20, 2005
Posts: 89
From: Utopia
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Gee, thanks Jolitorax for such a detailed description!
By the way, another question. Does K750 have spot photometry? With some people suggesting that it has, but i cant find it anywhere. I have R1J002 firmware and sim-free.
I have seen the spot photometry feature in the S700 though.
Phones: Ericsson 3618 > Nokia 2100 (thrashed) > Samsung C100 (sold2my best pal) > Samsung X600 (lost) > SE T630 > SE K700 (given to cousin)> SE K750 > SE W800 |
Grimslade
Joined: Jul 25, 2004
Posts: 464
From: London
PM |
You are pushing the limits of the dynamic range of even the best cameras with that shot. The sky is many, many times brighter than the train. The graininess is noise, which you will see plenty of in shadow areas and underexposed areas with the K750. Our eyes can take in a greater dynamic range (range of light-to-dark) than our cameras can. |
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Posted: 2005-08-25 14:56
