Workflow & gear · 7 min read · Updated 7 May 2026

How to photograph Pokemon cards for grading (or pre-grading)

The single biggest determinant of a good Pokemon pre-grade is photo quality. Get the photos right and the algorithm has clean inputs to work with - centering measurement precise to 0.1mm, surface scratches visible under raking light, holo flaws caught before you spend $30 on PSA fees. Get the photos wrong and even a perfect card looks borderline. This is the four-shot setup we recommend, plus the common mistakes that show up in real-world submissions every week.

Why photo quality determines pre-grade accuracy

Centering measurement is a geometry problem - the algorithm finds two contours (outer card border and inner artwork frame) and measures the gap on each axis. If the camera is at an angle, the geometry is distorted. If the background is busy, the contour detection is unreliable. If a hot spot from a flash or window obscures one edge, the measurement on that side is wrong. Garbage in, garbage out.

The four-shot setup we recommend

1. Front, straight on. Camera dead-flat above the card, lens parallel to the card surface. Frame the entire card with a small margin around it. Even, indirect light. This is the primary shot used for centering.
2. Back, straight on. Same setup, flipped. Used for back centering and back-edge whitening detection.
3. Front, angled (~10°). Tilt the card slightly to catch raking light across the surface. This reveals surface scratches and holo bleeding you can't see flat-on.
4. Four corners, close-up. Get closer - fill the frame with the card. This shot is used during the defect review to zoom in on each corner for whitening, softness, and edge wear.

Lighting for Pokemon card photos

• Indirect daylight by a window is best - soft, even, and natural colour balance.
• Two soft lamps at 45° angles from either side work well indoors. Avoid a single direct light source.
• Avoid the phone flash. Phone flash creates a hot spot directly on the holo, blowing out the surface and breaking centering edge detection. It's the single most common cause of failed photos in our validation pipeline.
• Diffuse if you must. A piece of white tissue paper or a thin towel over a lamp acts as a soft diffuser if you don't have proper soft lights.

Background and contrast

A plain, contrasting, non-reflective background helps the algorithm find the card border cleanly:

• White A4 paper for dark cards (most modern Pokemon).
• Dark mat for light-coloured cards (Trainer cards with white borders).
• Avoid: wooden desks, carpet, busy prints, glossy surfaces, tablecloths, anything reflective. The contour detection will struggle and your centering measurement will drift.

Phone settings and camera mode

• Use the highest-quality JPEG / HEIC setting your phone supports. Avoid aggressive in-camera compression.
• Disable HDR if your phone exaggerates contrast - HDR can artificially darken card borders and confuse edge detection.
• Hold the phone parallel to the card, not at an angle. The straight-on shots must be straight; even a 5° tilt distorts centering measurement.
• Tap to focus on the card, not the background. Make sure the artwork is sharp before pressing the shutter.
• Lock exposure if your phone supports it. Auto-exposure can shift between shots and make defects harder to detect.

Common mistakes (and the fix for each)

• Glare or hot spots. Move the light source or angle the card slightly to shift the reflection off the card face.
• Blur. Brace your elbows on the table or use a small tripod. Don't shoot handheld below 1/60s shutter.
• Cropped corners. Always leave a clear margin around the card. Cropped corners break border detection.
• Shadow on one edge. Light from both sides at 45°, not one side directly.
• Tilted camera. Use the camera grid overlay to keep the lens parallel to the card.
• Sleeve glare. If photographing through a sleeve, expect the sleeve seam to introduce a fake edge - some pre-graders reject sleeved photos for this reason.

Should I photograph or scan my Pokemon cards?

Photograph. A phone camera shot at the right angle catches surface defects a flatbed scanner cannot. Scanners flatten everything and hide hairline scratches, which is exactly what you need to see for surface sub-grade prediction. Use the scan-style straight-on for centering and the angled shot for defects - both with a camera, not a scanner.

What CardPreGrading validates before accepting a photo

We validate every photo before accepting it: resolution (≥1500px on the long edge), blur (Laplacian variance threshold), brightness, glare, and card-in-frame detection. If a photo fails, we ask you to retake. No credit is deducted until you have four good shots - the validation is fail-safe by design.

Pre-flight checklist

• Plain, contrasting background ✓
• Indirect daylight or two soft lamps at 45° ✓
• Phone parallel to card surface ✓
• HDR off, highest JPEG quality on ✓
• Tap-to-focus on the card ✓
• Card de-sleeved (or sleeve known to your pre-grader) ✓
• Margin visible around all four edges ✓

Once your photos are good, the pre-grading workflow takes over and you have a verdict in under 30 seconds.