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Why you can't rely on Photoshop's automatic settings


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One of the things I do after post-processing my photos in Adobe Camera Raw is to continue to fine-tune corrections I made in Camera Raw with the extended features of full featured Photoshop.

I rarely click them, but today I was curious how Photoshop would edit my photo(s) if I didn't have the experience in post processing that I currently have, and relied on "auto correction".

So here is the original, out of Camera Raw:
post-9897-0-88897800-1423599127_thumb.jpg

And this is what Photoshop wanted to do with it:
post-9897-0-59980800-1423599155_thumb.jpg

Sure, it looks somewhat cool, but my main goal when taking nature photography is to have it look, well, natural.

Just for grins, I threw this into Adobe Photoshop CS2 and hit the automatic buttons as well. I didn't save the results, but they were more natural looking- which would point to a (bad, imo) change in Algorithms used to edit the color hues, saturation, and luminance.

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Ohhh, so it gave it a redish hue to offset all the green. Makes sense ... to a program :P

Yes indeed. :P

 

I know nothing about how Photoshop processes images as I've never done any batch editing jobs or looked into the algorithms...

 

Now comparing the histogram, we can see that Photoshop is equalizing the output of the R, G, and B channels. I'm not looking at each channel individually because this isn't a photo that requires it, nor is it my best work, and besides... ain't nobody got time fo dat.

 

Histogram of the original image:

post-9897-0-27323400-1423600669_thumb.png

 

Histogram of the automatically processed image:

post-9897-0-69525700-1423600668_thumb.png

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xD I was going to say.. It just looks like it offset the green with red. >.<

 

Silly auto buttons :P

I can't stand auto anything. :P

 

Automatic coffee makers, automatic buttons, automatic transmissions... I could go on all day. :rolleyes:

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And here is the finished product:
pocketed_droplets_by_xernicus-d8hhbb8.jp

EXIF Data:
Camera Manufacturer: Canon
Camera Model: Canon PowerShot G12
Shutter Speed: 1/60 second
Aperture: F/2.8
Focal Length: 6 mm
ISO Speed: 200
Date Taken: Feb 8, 2015, 2:44:48 PM
Software: Adobe Photoshop CC (Windows)
Sensor Size: 7mm

Edited by Xernicus
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