DIY focus stacking machine aids in macro images
January 18th, 2023—
When you’re ever tried to seize some macro images (very close-up footage), you’ve in all probability observed that it’s tough to get correct focus. As a result of the depth-of-field (DoF) for macro lenses is so small, you possibly can solely maintain a slim vary of distance in focus at any given time — every little thing else is blurry. One answer 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 system simpler.
The main focus stacking approach requires a number of images, every with a barely totally different space of the topic in focus, till you’ve coated all the topic. Then you need to use picture enhancing software program, like Photoshop, to mix the photographs collectively. The result’s a macro picture the place all the topic is in focus. You may carry out that course of with none particular gear, however it’s tedious and tough to realize constant focus adjustments. Curious Scientist’s machine hastens the method and has good consistency.
As a substitute of refocusing the lens between images, this machine strikes all the digital camera. With auto-focus disabled and the lens manually targeted to the closest level of the topic, the entire digital camera strikes ahead by a predetermined distance after every picture.
The first elements on this venture 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 target stacking parameters: f-stop, magnification, and so forth. The machine then calculates how far to maneuver between pictures. It makes use of a regular shutter set off and will work with most cameras.