Move the camera, move the overlap
Try a ten-minute exercise for two people. Make two photos and one crop to see which changes the overlap between a nearby edge and a distant landmark. A phone, a pencil and a mark on a far wall are enough.
Download the one-page field card (PDF)Leading a group?
The facilitator kit includes the field card, a ten-minute teaching sequence and a short newsletter invitation. Clubs and classrooms may print and share the original material with credit to Honest Little Apps.
Read the complete exercise on this page
Picture guide. The two drawings show a twig against a distant dot. The twig overlaps the dot in frame A. In frame B, the far dot is in the same part of the picture and the twig appears to its left.
- Line up two features. Choose a near vertical edge and a distant fixed mark. Frame them so the edge covers the mark. Pick one zoom setting and take photo A.
- Predict, step, compare. Predict which side of the edge will reveal the mark. Move the phone a little sideways on level ground, keep the same zoom and centre the far mark again. Take photo B. A seated pair can slide the phone between two supported positions on a table.
- Change the crop, keep the spot. Crop photo B around the mark. Compare the overlap in the crop with photo B, then compare A with B. Which change moved the edge?
Discuss. What did you predict and what happened? Which frame would you keep? What distracts from the subject in the other one?
For a sunset shoot. Asterfold can show dates when sunset fits a chosen lens frame, with two viewpoints in the free tier. Its calculations assume a flat horizon. Check the view at the actual spot for hills and buildings.
Clubs, classrooms and newsletter editors may print and share this original card with credit to Honest Little Apps. The PDF includes an optional link and QR code for Asterfold on the U.S. App Store.