You may even be able to recognize this famous face! This optical illusion is known as the # negative # afterimage effect. You should see a faint color version of the above image for a few seconds. Then immediately look at a blank white wall or sheet of paper and quickly blink several times. Stare at the purple dot on her nose for 20-30 seconds without blinking. For more details, see this Petapixel article and video. Some of their outlets offer this service). Or a slide scanning service (If you live in North America, try Walgreens or Costco. We would suggest using a film scanner or a flatbed scanner with a slide adapter. We have tested some slide and film scanner apps, but the results were uniformly disappointing. Even then, scan quality won’t be very good. an appropriate, powerful illumination source to back-light the film, and a stand to hold the camera still. Scanning film negatives requires special equipment e.g. The above method will let you view your film negatives, but it’s not suitable for scanning them. When done, remember to return the accessibility option changes to their original settings. The display will now be B&W, but you’ll still be able to see the photos a lot better. To remedy this, go to Settings > General > Accessibility > Display Accommodations > set ‘Color Filters’ to ‘on’, and choose Greyscale. This is because the white balance needs adjusting. Hold the iPhone above the illuminated film strip, tap to focus, and there you are! You will see the positives of your photographs. This might be a bit startling, but don’t worry – you want to view the film negatives as positives, i.e. On iPhone, go to Settings > General > Accessibility > Display accommodations > Invert colors. You’ll use your iPhone to see the film negatives. Now you need to get a blank white screen. Whether using iPad, laptop or TV, increase screen brightness (On iPad: Settings > Display & Brightness).

If you don’t have an iPad, you could use your computer screen (or, push come to shove, TV screen). “Uniformly” is important, so unless you are into photography gear and have a proper light box, you must rig up something simpler. You need a light source to uniformly illuminate the negatives from behind.

an iPhone, to serve as the negative viewer.

an iPad (or computer) to back-light the negatives.

Here is a much better way to do it, and it’s really easy! You’ll need: Normally, you would hold the film against a window or a light source, then try to figure out what’s in there. Have a box or envelope of negative film strips lying at home? Curious what they contain? Maybe you’d like to select and print photos from them? But how about film negatives and Kodachrome slides? If you have film negatives of old photographs, here is a neat trick to view them as positives, using just your iPhone and iPad! No app needed. Our previous post explained how to scan photos with iPhone or iPad and Pic Scanner Gold app.

Digital slide scanner for mac