Hi James -
I'm not sure what you expect for duplicates - Aperture will not import duplicates (based on their file name I assume) if you tell it not to, but it doesn't have any way to do some kind of artificial intelligence duplicate search.
One solution is to use the list view in the browser, and try order by date, or by shooting date, or other - then, you may be able to identify duplicates adjacent to each other in the list.
For Boost, it really is up to you. I tend to leave it at default, except when I have a very contrasty image, or a serious highlight recovery issue. Then I wind it back quite a way. But I don't have an A900 (in my dreams...) and so I can't offer much specific help there. There's no rules really. Boost is just one of the tools you have to interpret the RAW data to your liking.
Hi all , I'm new to the forum. I think its the best for Aperture users .
I have some questions about Aperture .
How do you find duplicates and after delete them ?
What is your normal setting for Boost ? After some years now using aperture I find its better using the lower setting possible, you get much more detail in highlights. Is this correct ? Now I have Sony A900 .