Close-Up Precision: Macro DoF
Macro photography plays by different rules. When you are 1 inch away from a subject, the Depth of Field (DoF) is measured in millimeters. The **Macro DoF** tool at **Online Tool Base** helps you calculate this razor-thin focal plane based on your Magnification ratio.
It also calculates the "Effective Aperture." At 1:1 magnification, an f/2.8 lens acts like f/5.6 regarding light loss. **onlinetoolbase.online** accounts for this bellows factor, helping you manage your exposure and diffraction limits in the microscopic world.
Why Use This Tool?
Macro shooters often use "Focus Stacking" because the DoF is too shallow to get the whole bug in focus. This tool tells you exactly how much is in focus (e.g., 0.2mm). If your bug is 5mm deep, you know you need at least 25 stacked shots.
Key Features
- Magnification Input: Use 1:1, 0.5x, or 5x (super macro).
- Diffraction Warning: Warns when effective aperture ruins sharpness.
- Total DoF: Splits it into Front and Back focus.
How to Use
- Enter Magnification (usually 1.0 for standard macro).
- Select Aperture (f/stop).
- See the Total Depth of Field (e.g., 0.8mm).
- Decide if you need to stop down or stack.
Technical & Privacy Note
Physics based. The **Macro DoF** tool from **Online Tool Base** calculates optical properties in-browser.