I thought we'd sorted this? Obviously not.
Bob there's no compression difference between Lightroom versions when choosing the JPEG export.
Provided you set export options the same, you will get exactly the same result.
I really feel you are getting befuddled somewhere, pity I can't pop over to your and help you out
I just tested LR2 against LR1 with one of my own .PEF RAWs.
I set exposure to 'florescent' and sharpened to 50 then exported at 100 quality level, sRGB 96dpi (exact same process in both versions)
Both files exported to 2.66MB precisely.
Same applies when
exporting or
saving with PSP, make absolutley certain your save settings are exactly the same as previosuly discussed.
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