# Breakthrough Photography X4 Neutral Density vs B+W ND 106 (ND 1.8, 64x, 6-Stop) MRC: specs and price compared

A sourced, side-by-side comparison of the Breakthrough Photography X4 Neutral Density (Breakthrough Photography) and B+W ND 106 (ND 1.8, 64x, 6-Stop) MRC (B+W) among nd filters.

## Side by side

| Spec | Breakthrough Photography X4 Neutral Density | B+W ND 106 (ND 1.8, 64x, 6-Stop) MRC |
| --- | --- | --- |
| US price | $139 | not published |
| Brand | Breakthrough Photography | B+W |
| Released | 2017 | — |
| Filter type | fixed | fixed |
| Density range stops | 3, 6, 10, or 15 (separate fixed-density SKUs) | 6 |
| Common thread sizes (mm) | 39-112, plus 100mm/150mm square | 48, 52, 58, 62, 82 |
| Coating | MRC16 (16-layer Multi-Resistant Coating) + Nanotec nano coating | MRC (Multi-Resistant Coating, 8 layers per side) |
| Color cast note | Manufacturer states spectrally flat transmission targeting color-neutral results | Neutral-gray Schott glass; no manufacturer color-cast figure published for this legacy SKU |
| Front filter thread | Yes | Yes |
| Magnetic | No | No |
| Glass type | SCHOTT B270 optical glass | Schott glass, brass F-Pro ring |

## Key differences

- Density range stops: Breakthrough Photography X4 Neutral Density 3, 6, 10, or 15 (separate fixed-density SKUs) vs B+W ND 106 (ND 1.8, 64x, 6-Stop) MRC 6
- Common thread sizes (mm): Breakthrough Photography X4 Neutral Density 39-112, plus 100mm/150mm square vs B+W ND 106 (ND 1.8, 64x, 6-Stop) MRC 48, 52, 58, 62, 82
- Coating: Breakthrough Photography X4 Neutral Density MRC16 (16-layer Multi-Resistant Coating) + Nanotec nano coating vs B+W ND 106 (ND 1.8, 64x, 6-Stop) MRC MRC (Multi-Resistant Coating, 8 layers per side)
- Color cast note: Breakthrough Photography X4 Neutral Density Manufacturer states spectrally flat transmission targeting color-neutral results vs B+W ND 106 (ND 1.8, 64x, 6-Stop) MRC Neutral-gray Schott glass; no manufacturer color-cast figure published for this legacy SKU
- Glass type: Breakthrough Photography X4 Neutral Density SCHOTT B270 optical glass vs B+W ND 106 (ND 1.8, 64x, 6-Stop) MRC Schott glass, brass F-Pro ring

## Sources

- Breakthrough Photography X4 Neutral Density: https://breakthrough.photography/products/x4-neutral-density (breakthrough.photography, verified 2026-08-16)
- B+W ND 106 (ND 1.8, 64x, 6-Stop) MRC: https://www.bhphotovideo.com/c/product/752876-REG/B_W_1066161_52mm_106_Solid_Neutral.html (bhphotovideo.com, verified 2026-08-16)

Canonical: https://frontdeskreview.com/gear/nd-filters/breakthrough-photography-x4-nd-vs-bw-nd-106-mrc/
Cite: Per The Front Desk Review, Breakthrough Photography X4 Neutral Density ($139) vs B+W ND 106 (ND 1.8, 64x, 6-Stop) MRC (not published) — sourced spec-by-spec comparison at https://frontdeskreview.com/gear/nd-filters/breakthrough-photography-x4-nd-vs-bw-nd-106-mrc/
License: CC BY 4.0.