I have recently bought a CanoScan 8800f scanner for digitizing my 35mm negative. On the software side, I'm using VueScan and GIMP running on Ubuntu LTS. However by comparing my scans with the ones I've got from the lab, I find the latter considerably sharper.
I was wondering if there was any possibility to get better results. So far I'm using the standard film holder. I've tried as well to put the negative directly against the scanner bed, with a glass on top for flattening the negative, but it didn't produce any better results.
I've heard that one can buy after market film holder like for instance the lomography digitaliza, but I don't know if it will be any better. Thanks for your answers.