Re: O2 HTC HD2 Review - x1 edit
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Originally Posted by windows
More example pictures, the latter ones in Wales were taken using the release ROM.
I still find the photos discoloured.
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This intrigued me so I've just looked at the hillside and the coastal view in PaintShopPro. I'm no expert but there seem to be multiple effects at play.
The hillside appears to be confused by the bright sky & dark hillside. This is partly how you'd expect in that by metering away from the sky (ie. centre weighted) the sky is very overexposed, but oddly the hillside still seems a bit dark. Setting a gamma of about 90% makes the hillside look a bit better, the sky is unrecoverable. I agree that the image seems very blue. The odd thing is that the histogram's for the hillside show almost no red or blue despite the feeling of blueness.
The coast I thought would be more revealing as the exposure should be more natural with an image half sky and half grassland. Again the picture seems to improve with a gamma of 90%. There actually is blue in the image this time! There is no red but there is none in the scene so that's ok. As I say I'm not great with PSPro but the intensity of the blue (and green) is hard to reduce. I guess we can expect a lot of green but those sky's look a bit blue for the UK in October/November.
I wonder if its either a) an effect like the overcoloured images that very retail film (like Kodak Gold) used to be accused of. Every day a bright sunny glowing day! or b) there is say a lack of UV filtering so like a film camera without a daylight/sunlight/UV filter you actually get an unnatural image. It may even be a combination of both - a desire to "up the colour" and oversensitivity to UV. For example a typical page for a UV filter says:
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Even though you can't see light in the UV (ultraviolet) spectrum, some digital and film cameras in some situations do see it; and what you might get is a bluish haze in pictures taken in the presence of UV light. UV filters, also variously called skylight or haze filters, are transparent to visible light; but absorb UV without changing photographic exposure settings. UV filters add subtle warmth (meaning more shades of red) by reducing the bluish cast that can appear in pictures of distant landscapes, on heavily overcast days, in open shade, or in shots at high altitudes (on mountain tops) and from high altitudes (in aircraft). Any serious photographer needs this high quality optical glass filter from Lenmar.
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Is there anyone better with PaintShopping who can shed more light on the subject?
EDIT: Discovered something new. If you use a tool that shows the RGB value for the pixels (eye dropper or manual colour balance) then the Sky in the coast picture is ALL blue=255. In the hillside the top half of the sky is blue=255. So that's totally saturated with blue (so much for PSPro histogram function!). This does suggest to me that its a massive UV sensitivity. Does anyone make a stick on UV filter for phones?
I've captured the BLUE channel - as you can hopefully see in the attached photo - there is NO blue detail in the sky so I do think its oversensitive to UV. |
Now TMobile is selling it before O2!!
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