Projector Test Patterns (Focus, Convergence, Geometry)
Seventeen test patterns for projector installation and calibration: focus and lens-shift, convergence, keystone and geometry grids, colour uniformity, and the moiré/screen-door checks that only show up once a projector is actually mounted and focused.
What these files actually are
Project onto a flat, neutral-grey or white screen for an accurate result - textured or off-white walls will distort the pattern - and dim the room the way you would for normal projector viewing. Free download, no watermark, no attribution required, each with a SHA-256 hash and VirusTotal link.
Common use cases
Projector installation and focus
Fine-tune focus, zoom and lens position before finalizing a projector mount.
Keystone and convergence correction
Check geometry and color convergence after any lens shift or keystone adjustment.
Projector Focus Test Pattern
Focus the lens until the corner crosshatch and center circles are equally sharp.
Projector Convergence Test
The white grid splits into red/green/blue fringes when panels are misconverged.
Projector Geometry Grid Test
Align the grid to your screen - lines must be straight and evenly spaced.
Projector Keystone Alignment Test
Square up the border with lens shift first; digital keystone costs sharpness.
Projector Lens Shift Test
Use the center cross while adjusting lens shift.
Projector Corner Focus Test
Compare corner sharpness against center - uneven focus means lens or alignment issues.
Projector Color Uniformity Test
White and gray fields - watch for color shift across the image.
Projector Black Level Test
In a dark room: how close to black does your projector get, and do the near-black steps separate?
Projector Screen Border Alignment
Land the 1px border exactly on your screen's edges.
Projector Moiré and Fine Line Test
Moiré/interference bands in these line blocks reveal scaling or screen-surface interactions.
Projector ANSI Checkerboard Contrast Pattern
The standard 4x4 checkerboard used for ANSI contrast measurements.
DLP Rainbow Effect Test
Follow the bright object, then quickly move your eyes across the screen. Brief red/green/blue flashes are the DLP rainbow effect - a subjective observation, not a measurement.
Projector Screen Door Effect Test
Step close to the image: a visible pixel grid over these patterns is the screen door effect.
Projector Pixel Shift Resolution Test
Toggle pixel-shift (e-shift/XPR): the 1px detail should visibly tighten when it is on.
Laser Projector Speckle Test
Flat fields make laser speckle (glittery grain) most visible - green usually shows it strongest.
Projector Chromatic Aberration Test
Color fringes on the white lines toward the image edges are lens chromatic aberration.
Projector Lens Distortion Test
Straight grid lines bowing inward or outward reveal pincushion/barrel distortion.
Frequently asked questions
- What surface should I project on?
- A flat, neutral-gray or white screen gives the most accurate result; textured or off-white walls will distort the pattern.
- Do I need to dim the room?
- Yes - projector test patterns are most accurate with reduced ambient light, similar to normal projector viewing conditions.
- Which test should I start with?
- Projector Focus Test first - geometry and convergence checks are only meaningful once focus is correct.
More test categories
- Dead Pixel & Screen Color Tests — 33 Free Full-Screen Videos
- Monitor Motion & Refresh Rate Tests — 57 Free Videos (60–240Hz, VRR)
- OLED & Panel Uniformity Tests — 27 Free Videos (Backlight Bleed, IPS Glow)
- Brightness & Contrast Test Patterns — 10 Free Calibration Videos
- Flicker, BFI & Motion Clarity Tests — 23 Free Videos
- HDMI Signal & Chroma Processing Tests — 26 Free Videos
- PC Monitor Setup Tests — 38 Free Scaling, Subpixel & Sharpness Videos
- Gaming Monitor Tests — 16 Free VRR, Ghosting & Blooming Videos