this device is quick and efficient especially considering its price. I scanned old slides and negatives old (30 years for some) and I am delighted with the quality and speed. it is better to store the images in the SD card without connecting to the PC it's faster. for instructions, even if in English the development of some watches is more complicated. I put more slides directly into the slot without removing their cache, go slowly for the insertion of films, in summary apart it takes work off dust this little scanner is fine.