I think you might be getting a bit mixed up with your .tif and .jpeg files.
I have a Minolta Dimage E203 which produces .tif files but each shot is listed in Irfanview in both .tif and .jpeg form - the first might be around 3MB and the second 265kb.
Best Black Friday Deals 2017
Best Black Friday Apple Deals 2017
Black Friday 2017 : date, sites participants & bonnes affaires