Case Study · Size Decision
48x48 vs 64x64 Portrait Mosaic: Size Comparison Case Study
The same portrait photo rendered at two sizes — showing exactly where detail is gained, what it costs, and how to decide which size is right for your specific photo.
A single human portrait works well at 48x48 when the face is clear, high-contrast, and fills the frame — but 64x64 adds visible detail around the eyes, hairline, and skin tone gradients. The 64x64 version uses 4,096 pieces, costs around ~$246, and is best for portrait subjects whose likeness matters most. For simpler faces or tight budgets, 48x48 at ~$138 is sufficient.
Quick Facts: Side by Side
| Metric | 48x48 | 64x64 |
|---|---|---|
| Photo type | Human portrait, front-facing | |
| Total pieces | 2,304 | 4,096 |
| Brick type | Square 1x1 plates (#3024) | |
| Cost (PAB) | ~$138 | ~$246 |
| Build time | 3–5 hours | 5–8 hours |
| Eye detail | Good | Excellent |
| Skin gradient | Simplified | Detailed |
Original Photo Analysis
Subject Clarity
Sharp focus across the entire face. At 48x48 this is the minimum needed to preserve identity. At 64x64 it allows visible detail in eyebrows and lip contour.
Background Complexity
Simple neutral background retained to add context. Could be removed to reduce piece count — but for a portrait comparison, the focus is the face rendering difference.
Lighting Quality
Soft studio-style lighting from slightly above. No harsh shadows or blown highlights. Ideal for translating skin tone gradients into a limited brick palette.
Contrast & Tonal Range
Medium contrast — strong enough to survive quantization at both sizes, but where 48x48 simplifies skin tones to 3 tonal planes, 64x64 resolves 5–6 distinct zones.
Crop Suitability
Face fills 65% of frame with forehead to chin fully visible. This tight crop is crucial — it ensures the face dominates at both sizes without needing enlargement.
Setup Choices
Why compare both sizes?
Size is the single most impactful decision in mosaic planning. This case documents exactly what changes — and what it costs — so you can make an informed choice before ordering 4,000+ pieces.
Brick Type Selection
Square 1x1 plates (#3024) used for both tests. Square plates provide the most reliable tonal transition comparison without the added texture variable of round tiles.
Side-by-Side Results
Original source photo
BMBrick 48×48 preview
BMBrick 64×64 preview
Detailed Comparison: Eyes & Tonal Transitions
When zoomed in, the difference becomes undeniable. The 64×64 grid allows for a secondary highlight in the eye and a much smoother transition from the shadow of the nose to the cheekbone.
Left: 48×48 (pixelated features) | Right: 64×64 (resolved features)
Choose 48x48 for budget-conscious single portraits where the viewer will be at least 5 feet away. Choose 64x64 when facial detail (eyes, smile lines) is the priority or for gifts where a larger physical size (51cm vs 38cm) is desired. For the highest fidelity, 64x64 is the clear winner for single human faces.