DIY focus stacking system aids in macro pictures
January 18th, 2023—
Should you’re ever tried to seize some macro pictures (very close-up footage), you’ve most likely observed that it’s troublesome to get correct focus. As a result of the depth-of-field (DoF) for macro lenses is so small, you’ll be able to solely hold a slender vary of distance in focus at any given time — the whole lot else is blurry. One resolution is “focus stacking,” through which you are taking many images after which mash them collectively in software program. Curious Scientist designed a macro photography focus stacking device that makes this method simpler.
The main target stacking approach requires a number of images, every with a barely completely different space of the topic in focus, till you’ve lined your complete topic. Then you should utilize photograph enhancing software program, like Photoshop, to mix the photographs collectively. The result’s a macro photograph the place your complete topic is in focus. You possibly can carry out that course of with none particular tools, however it’s tedious and troublesome to attain constant focus modifications. Curious Scientist’s system quickens the method and has excellent consistency.
As an alternative of refocusing the lens between images, this system strikes your complete digital camera. With auto-focus disabled and the lens manually centered to the closest level of the topic, the entire digital camera strikes ahead by a predetermined distance after every photograph.
The first parts on this mission are an Arduino Nano board, a linear actuator with stepper motor, a stepper motor driver, a 1.8” LCD panel, and management buttons. With the LCD and buttons, the consumer can set the main focus stacking parameters: f-stop, magnification, and so forth. The system then calculates how far to maneuver between pictures. It makes use of a typical shutter set off and will work with most cameras.