Tiff Image Appears to Contain 2 layers

[pintosal]

When I scan a colour negative at high resolution (3600 dpi) with my Plustek scanner, I usually save in TIFF format.

The resulting files are quite large (50Mb approx) which is OK.

If I open them using GIMP I find there are 2 layers, one containing the full size image, and the other approx 1/8 size.

Is this normal?

What is the rationale for this?

[LSI_Ketelhohn]

Dear user,

yes that is normal SilverFast HDR (Studio) and other applications can use that to open images more quickly and it is used for faster thumbnail generation.

Kind regards,
Arne

[pintosal]

Many thanks

[UlrichB]

Hallo. Is it possible to disable that function?

[LSI_Ketelhohn]

Dear user,

Yes in the preferences' Special tab. The option is called HiRePP.

Kind regards,
Arne

[UlrichB]

Thank you very much. That is very helpful

Kindest regards
Ulrich Biroth