I have a PSD file (16bits/prophoto RGB) with some layers. I combine the layers to ONE and change the bit depth to 8 bits.
Then I do one of two things:
(a) I save the file for the web in JPEG 90% high-quality and with sRGB ... filesize 340 602
(b) I change the color profile to sRGB and save the file as JPEG in the highest quality (10) ... filesize 174 549
I am at loss here. How on earth is it possible that the second file is almost half the size as the one saved for the web?
What effect causes this? It is very easy to save for yhe web but as long as the JPEGs are that bigger it's no option.
Please enlighten me.
Save for web makes the smallest footprint. Depending on option chosen it can stip out the metadata also. Had to estimate how much this accounts for.
You can check the quality of the two images by opening up the 2 saved images and looking at them at high enlargement to see difference. Use the same photo saved both ways.
in my older version of PhS the qualitity scale reaches
a) in Save for Web from 0...100%
b) in Save As from 0...12
Comparing both compressions for highest quality
the resulting file sizes are near to each other.
Embedding of an RGB ICC profile is almost irrelevant (some kByte).
Please ignore my post, if the quality settings in Save As should have
been redefined meanwhile for the range 0...10.
Best regards --Gernot Hoffmann