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DPChallenge Forums >> Tips, Tricks, and Q&A >> Exposing REDS
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07/05/2002 08:50:28 PM · #1
I have been having some problems exposing RED subjects for a while now... It seems that every time my subject is red, or a shade thereof, I overexpose the image. I posted a sample over on Photosig of a SAMPLE of this problem... any comments or suggestions on this would be greatly appreciated....

07/05/2002 09:39:29 PM · #2
Well according to DPReview this is a known issue with this Sony:

Those who have owned or read reviews of Sony DSC''s will know that they do produce some of the most vivid colour of any digital camera. In the pre-production version of this review I noted that the F707 was creating reds which ''clipped'' (had a red value of 255 for much of a single area). This issue does appear to have been addressed in the production F707 (we''ve estimated the saturation of reds to have been decreased by 7%).

However, the F707 can (will) still produce neon like reds in certain circumstances, what was interesting when shooting a comparison to the Canon G2 (below) was that there was actually no loss of detail in the flower petals but rather that they were simply far more saturated. I found a selective hue/saturation decrease of -10 on reds (in Photoshop) produced a more natural and life-like pure red.

That''s not to say that in some circumstances the F707 won''t still clip bright reds.


From this page of the 707 review.

This isn''t terribly surprising in any CCD camera though, as the sensitivity of CCDs tends to be considerably higher in the Reds (and even into the infrared) thus quite a bit of work needs to be done (in filtering, control software, and whatever else they do to make the camera work right) to keep the vibrancy of blues and greens, but tone the red down to manageable levels. But it may have just been a decision based on likeing really vibrant reds, or maybe the green light engineer had red/green color blindness.

End result it is the camera/firmware/ccd so if you dont like the bright reds you can always make the correction to the red saturation, but theres not much else you can do.

You may however want to check (call customer service) and see if there is a firmware update newer than your firmware.

* This message has been edited by an administrator (drewmedia) on 7/5/2002 11:37:43 PM - Trying to figure out why formatting is wrong....
07/05/2002 09:49:02 PM · #3
puppet, thanks for the pointer... I suppose i will have to work out an over exposure to fix this or just fix it in photoshop... thanks :)
07/05/2002 11:05:40 PM · #4
I remember I had an old Sony that did that also. The reds don't appear to be clipped, but just oversaturated. I had some luck by selectivly desaturating the reds about 10-15% in Hue/Saturation in Photoshop. Hope that helps some.
07/15/2002 08:14:25 AM · #5
John,

You've probably also thought of this, but... have you looked at the white balance setting you're using? I used to have a Sony and it (like my current Nikon) sometimes would have a problem determining the proper setting to use when I was in a naturally lighted and bright indoor/enclosed environment (such as a glass-ceiling'ed shopping mall).

Depending upon what setting it would use, it would sometimes oversaturate either my blues or my reds. It's easily fixable in Photoshop, but now I preview my shots in these bright areas and if necessary I manually set white balance to "Sunny".
07/15/2002 08:47:51 AM · #6
G2 red

I think this was slightly underexposed (-1/3 or -2/3 or so?), and I used a white balance off the background (a laptop screen set to white) then turned on a tungsten bare bulb lamp to get the warmish tones in the red.

Obviously not applicable to every situation, but I was just having some fun with custom white balance and stuff...:)
07/15/2002 02:24:34 PM · #7
John -- I have the 707's wee baby brother, and I have noticed that my reds are true either. I have adjusted white balance and exposure as well, but it still seems "hot." (For lack of a better word.)Would it be a Sony-situation?
07/15/2002 02:30:42 PM · #8
guys, i dont know if this helps, but there is a term i have read on bulletin boards around the net. the term is 'sony red' meaning a really bursting oversaturated red.

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