Luma Band
Spectra: LumaBand — Precision Masking in the Language of Light
An essential tool for CMY-Negative and JPLog2 workflows
Unlock the precision of photographic masking with Spectra: LumaBand, a luminance bandpass filter purpose-built for professional colorists working in digital negative space. Inspired by the logic of audio EQ, LumaBand isolates and visualizes luminance ranges with intuitive control, allowing surgical adjustments across shadows, mids, and highlights.
Whether you’re targeting texture, separating exposure zones, or prepping a mask for advanced contrast shaping, LumaBand reveals your image’s tonal structure with clarity and control.
Key Features
• Adjustable Center Luma and Q Factor — Focus your mask on exact luminance values, from toe to shoulder.
• Three display modes — False Color, Bandpass Mask, and Inverted Mask give you visual feedback in real time.
• Calibrated for JPLog2 space and fully optimized for use with the CMY Negative DCTL pipeline.
• Ideal for prepping filmic contrast adjustments, Luma-based keying, or creating custom luma curves with unmatched precision.
Recommended Node Placement
Place Spectra: LumaBand immediately after the CMY Negative transform while still in negative space. Use it to isolate zones, then blend or drive other effects using precise luma masks.
Suggested Pipeline
IDT → CMY Negative → Texture FX → RGB Reverter → CDL → LumaBand → Look LUT → ODT
Spectra: LumaBand — Precision Masking in the Language of Light
An essential tool for CMY-Negative and JPLog2 workflows
Unlock the precision of photographic masking with Spectra: LumaBand, a luminance bandpass filter purpose-built for professional colorists working in digital negative space. Inspired by the logic of audio EQ, LumaBand isolates and visualizes luminance ranges with intuitive control, allowing surgical adjustments across shadows, mids, and highlights.
Whether you’re targeting texture, separating exposure zones, or prepping a mask for advanced contrast shaping, LumaBand reveals your image’s tonal structure with clarity and control.
Key Features
• Adjustable Center Luma and Q Factor — Focus your mask on exact luminance values, from toe to shoulder.
• Three display modes — False Color, Bandpass Mask, and Inverted Mask give you visual feedback in real time.
• Calibrated for JPLog2 space and fully optimized for use with the CMY Negative DCTL pipeline.
• Ideal for prepping filmic contrast adjustments, Luma-based keying, or creating custom luma curves with unmatched precision.
Recommended Node Placement
Place Spectra: LumaBand immediately after the CMY Negative transform while still in negative space. Use it to isolate zones, then blend or drive other effects using precise luma masks.
Suggested Pipeline
IDT → CMY Negative → Texture FX → RGB Reverter → CDL → LumaBand → Look LUT → ODT