lightroom auto tone adjustments

[broo]

Hi,

I'm doing some raw conversions for my friend, as it's going to be printed so we are trying to get very specific results and obviously we do need to get exactly the same from different computers. We use lightroom 2 for raw conversions, he has it set on auto tone corrections (kind of out of the box settings) so I've reset my lightroom (with auto settings now as well) and in theory it should give the same results - but somehow it does not. Mine come out much darker.

We have tried inputting the same numeric values - and than the final photos are the same.

Any idea why the auto converter would give different results? Could it be caused by some out of lightroom settings, or because one is using PC and the other MAC?

I'll be grateful for any suggestions, as I've run out of ideas and can't find anything valid on the net.

Thanks,

Anna

[SusanH1970]

Are prints coming out different, or are they just looking different on the computer screens?

[broo]

unfortunately prints.

[IABoomer]

Are both of you using the same colorspace? If one of you is using Adobe RGB and the other sRGB, that could be a problem.