Sigma DP2 Merrill

Precise detail with a layered-sensor processing reference.

This effect approximates a documented capture and processing recipe on an existing image. It is not a measured or exact reproduction.

Creative applications

• Detailed still lifes and architectural photographs.
• Exploring restrained detail and low-light texture separately.

Starting workflow

1. Start with a well-exposed image. Standard is the default; switching recipes keeps your other edits.
2. Adjust Exposure before tuning the optical, response or texture controls.
3. Compare with the source using Mix and inspect fine edges at the intended output size.

Key controls

Processing

Camera-JPEG color mode interpretation. Switching recipes preserves other control values.

Default: Standard · Choices: Standard, Neutral, B&W

ISO

Index into virtual sensitivity texture profiles.

Default: 100 · Choices: 100, 400, 1600, 6400

Detail

Bounded local acutance; 0 removes additional sharpening.

Default: 70% · Range: 0% to 100%

Luma Noise

Multiplier on luminance texture; 0 off.

Default: 1 · Range: 0 to 2

Chroma Noise

Multiplier on spatially correlated shadow color texture; 0 off.

Default: 1 · Range: 0 to 2

Exposure (EV)

Trim input brightness before processing; clipped detail cannot be recovered.

Default: 0 · Range: -2 to 2

Mix

Blend with the source; zero bypasses the treatment.

Default: 100% · Range: 0% to 100%

Seed

Choose a repeatable texture arrangement; this does not animate the image.

Default: 17 · Range: 0 to 65535

Practical tips

• Judge texture at the final display or export size.
• Use the same source and exposure when comparing camera treatments.

Limitations

• Cannot recreate Foveon spectral capture or add spatial detail absent from the source; high-ISO texture is initially uncalibrated.
• Existing grades, compression and clipping remain part of the input. Recipe fidelity has not yet been validated against matched captures.
• Brand and model names identify the inspiration; no manufacturer endorsement is implied.