I had endless problems & frustrations with TWAIN, including the one you described.<BR>
I gave-up on TWAIN and went with Silverfast SE exclusively, as a plug-in installed within Photoshop 7's "Plug-in Folder."
Since then it's been working reliably on all media, positive, negative, color, b & w, transparency and reflective.<BR>
Caution: before you give-up on TWAIN, be sure you are removing the plate from the cover when you scan transparencies and replace it snugly when you are doing reflective scans.
Epson Perfection 2450: problem scanning colour transparencies
in PhotoNet Site Help
Posted
I had endless problems & frustrations with TWAIN, including the one you described.<BR>
I gave-up on TWAIN and went with Silverfast SE exclusively, as a plug-in installed within Photoshop 7's "Plug-in Folder."
Since then it's been working reliably on all media, positive, negative, color, b & w, transparency and reflective.<BR>
Caution: before you give-up on TWAIN, be sure you are removing the plate from the cover when you scan transparencies and replace it snugly when you are doing reflective scans.