I have done some film scanning, as there are usually 4base and 16base resolution, 4 base is 1800x1200 and 16base is 3360x2240, but normally what dpi they will scan with? i got 72dpi with my 16base scanning, can't remember what dpi i got with 4base scanning.
Question1 :So how dpi will affect the quality?
i zoom in that 16base scanned image with 100%. is it normal to see grain?
because the file size is quite big, so i tried to use photoshop to save as another copy, photoshop will always ask you what quality you want to save, from 0 to 8? mm..
Question2 :how to save a big image to a smaller image without losing least details? when i save to a smaller file, the size of or image is still the same, like 3360x2240. Can i do alternative way like resize the original image? will it be a smaller size?
hope you share whatever u know about it! thank you.