need help with jpeg compression

[steve.ledger]

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.

[Trev]

just in case it clears any confusion. Psp uses a different scale. I in Jpeg export is best quality where as 100 is best in adobe and most other programs. Now as for Lightroom 2 against 1 then it must be that the jpeg export slider is set at something different to what you had it set in 1. I believe the out of the box setting is 50%

[steve.ledger]

Now as for Lightroom 2 against 1 then it must be that the jpeg export slider is set at something different to what you had it set in 1. I believe the out of the box setting is 50%

Not at all. Both versions use 100 as best quality, least compression.
There's very little difference in the export dialogues.
As you say, most apps use the scale 1 - 100 to mean quality setting.

LR2 'out of the box setting' was 75.

[handrawn]

well I know what you mean Trev

had occured to me - without knowing what the old photos were set at in the original lightroom - bit difficult to make direct comparisons....?

[robertj298]

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.

Steve I'm just trying to understand how I originaly ended up with a 4.68 meg file the very first time I exported the same photo I emailed you the first time I exported from lightroom 1.4 did some adjustments then saved....Bob