Blog
Articles on filmmaking technique, production planning, and industry knowledge.
Showing 5 of 5 posts
How to Use Hyperfocal Distance in the Real World
A practical hyperfocal distance guide for filmmakers. Learn the formula, set focus without a lens scale, and know when the technique will fail.
DoF Calculator vs. Lens Markings: Which to Trust on Set?
Focus pullers explain when to trust a depth-of-field calculator and when to trust the marks on your lens barrel. Covers CoC mismatch, lens breathing, T-stop, and focus scale accuracy in 2026.
Zone Focusing for Filmmakers: How Street Photographers' Technique Translates to Run-and-Gun Video
Street photographers have used zone focusing for decades to capture decisive moments without a viewfinder. The same technique - pre-setting focus to a calculated zone rather than tracking a subject - is one of the most practical solutions for documentary, ENG, and solo-operator video work where manual focus-pulling is not possible.
Why Your Lens Markings and Your DoF Calculator Still Disagree (Breathing, T-Stops, and Diffraction)
Even with the correct circle of confusion set, a DoF calculator will give you a number your lens cannot quite deliver. Lens breathing changes the effective focal length as you focus closer. T-stops differ from f-numbers. And diffraction shrinks your sharp zone past f/8 on modern sensors. Here is what each factor contributes.
Depth of Field in Cinema: The Complete Practical Guide
A complete breakdown of how depth of field is calculated in cinema, how sensor size changes the math, and how to make confident focus decisions before the camera rolls.