Drop an X3F RAW file from your Sigma dp2 Merrill to check the shutter count — processed entirely in your browser, never uploaded anywhere. The dp2 Merrill features the symmetric Foveon X3 Merrill sensor — the predecessor to the Quattro generation — with all three colour layers at full 15.3 MP resolution, yielding approximately 46 MP of equivalent detail.
Check Shutter Count →The Sigma dp2 Merrill (2012) was the second generation of Sigma's dp compact series, introducing the Foveon X3 Merrill sensor — named after Richard Merrill, the Foveon engineer who developed the three-layer photodiode architecture. The 30mm f/2.8 lens (45mm equivalent) is the same optical formula as the later dp2 Quattro, making the two cameras direct comparisons for evaluating the Merrill versus Quattro sensor generations. Sigma does not publish an official shutter life rating.
| Model | Release | Sensor | Eff. Resolution | Est. Shutter Life |
|---|---|---|---|---|
| Sigma dp2 Merrill | 2012 | Foveon X3 Merrill (symmetric) | ~46 MP | ~100,000 (est.) |
| Sigma dp2 Quattro | 2014 | Foveon X3 Quattro (asymmetric) | ~29 MP | ~100,000 (est.) |
| Sigma dp1 Quattro (28mm equiv.) | 2014 | Foveon X3 Quattro (asymmetric) | ~29 MP | ~100,000 (est.) |
| Sigma dp3 Quattro (75mm equiv.) | 2015 | Foveon X3 Quattro (asymmetric) | ~29 MP | ~100,000 (est.) |
| Actuation Count | % of Est. Life | Assessment |
|---|---|---|
| 0 – 3,000 | 0 – 3 % | Very low use — near new |
| 3,000 – 20,000 | 3 – 20 % | Low to moderate use |
| 20,000 – 55,000 | 20 – 55 % | Moderate use — normal for active use |
| 55,000 – 85,000 | 55 – 85 % | High use — negotiate price |
| 85,000 + | 85 %+ | Near or past estimated life |
The dp2 Merrill is inherently a low-volume camera — the ~20 second write time per X3F file and single-shot buffer make rapid shooting impractical. Many decade-old examples have under 10,000 actuations. The shutter count is less diagnostic than on high-fps cameras; prioritise sensor condition (hot pixels, dust) and lens element clarity.
The dp2 Merrill uses the Foveon X3 Merrill sensor at APS-C size (23.5×15.7 mm). Unlike the later Quattro design, the Merrill uses a fully symmetric architecture: all three silicon photodiode layers — top (blue-green), middle (green), bottom (red) — resolve at full 15.3 MP resolution. The result is approximately 46 megapixels of colour information per image — higher than the Quattro's ~29 MP equivalent. In practice, this yields marginally more colour detail in fine textures at base ISO, but at the cost of significantly slower processing and larger file sizes.
The 30mm f/2.8 lens is optically identical in specification to the dp2 Quattro. The Merrill-generation body is more compact and conventional in shape compared to the elongated Quattro design. Minimum focus distance is 28 cm.
Yes. Drop the X3F file from your dp2 Merrill into shuttercount.app and the actuation count is displayed immediately. Sigma X3F files from both Merrill and Quattro generation cameras reliably embed the shot counter in the EXIF block.
Not definitively. The Merrill uses a symmetric three-layer Foveon design (full resolution at all layers, ~46 MP effective) which theoretically captures more colour detail. However, the Quattro's asymmetric design (full resolution only at the top layer, ~29 MP effective) improved processing speed dramatically and improved high-ISO performance. For base-ISO fine-art or landscape work where the camera is tethered and shot counts are very low, the Merrill's symmetric data can yield marginally richer colour. For any practical shooting scenario, the Quattro's usability improvements outweigh the Merrill's theoretical sensor advantage.
Each X3F file from the dp2 Merrill is 25–40 MB, containing full-resolution data from all three Foveon layers. The camera's processor takes approximately 10–20 seconds to compress and write this data to the SD card after each shot. This effectively limits the dp2 Merrill to one shot every 20–30 seconds in RAW mode. This is a known and well-documented limitation of the Merrill generation; the Quattro generation improved write speed substantially. A fast UHS-I SD card helps but does not eliminate the bottleneck, which is primarily in the camera's processor.
Sigma Photo Pro (free) is the correct and recommended software for X3F files. It is the only application that fully processes the three-layer Merrill data. Adobe Lightroom Classic can import X3F from Merrill cameras but processes it through a Bayer-style demosaicing pipeline that does not correctly exploit the Foveon architecture. The quality difference between Sigma Photo Pro and Lightroom output from Merrill files is more pronounced than with Quattro files. Export to TIFF from Sigma Photo Pro for any further post-processing.
The dp2 Merrill (2012) succeeded the dp2x (2010), which used the first-generation Foveon X3 sensor at just 14.1 MP total (4.7 MP per layer). The Merrill's jump to 15.3 MP per layer (46 MP equiv total) was a major resolution increase. The Merrill also introduced a larger, improved LCD. Despite being over a decade old, the Merrill-generation image quality at base ISO is still competitive with modern APS-C cameras for static, base-ISO subjects.