Blown out pixels

Dan7312

I have an image that has just a few blown out pixels in LR3 (Pro Photo), the one on the left. If I cut back the exposure just 0.1 suddenly the whole flower is blown out. If I increase the exposure (not shown) I can go all the up to +0.4 before the whole flower is blown out.

The same thing happens (whole flower is blown out) if I up the hightlight recovery by +1.

How can reducing exposure or upping hightlight revover cause more blown out pixels? BTW most of the yellow in the flower is 0% blue. In the image on the left the few blown out pixels have 100% green and R and G are both more than 99%

Thanks in advance for any insight.

basflt

disable the clipping warning and judge yourself
clipping warning is just a guide / tool , not point as maximum or so

tip
click on the nummeric-box of exposure
add another digit
now you can finetune with 0,100 increments instead of 0,10 [ nummeric , not w slider ]

edit
temp and tint can have that same inverse effect too
you should adjust all sliders , recovery brightness and so on , not just one

arodney

That’s saturation clipping (look at the red spike in the Histogram). You could lower this all by playing with vibrance or Saturation or selective red saturation if you think this is an issue.

In ACR or LR, if you see a black or white spike on the end of the Histogram, that’s actual tonal clipping (all three channels). But a colored spike describes one or possibly two channels clipping (saturation). This may or may not be a problem. In ACR, if you click on the Workflow Options, you select a true output color space like ProPhoto RGB and the clipping is updated based on that. In LR however, the data is based on a color space you never end up with (ProPhoto primaries with an sRGB tone curve).