Black & White Photography - ApertureViewer/Aperture-Viewer GitHub Wiki

Aperture Viewer revolutionizes black & white virtual photography by providing powerful, real-time conversion and tonal adjustment tools directly within its Post-Processing Tab in the Aperture Phototools Suite (APS). This guide will show you how to transform your color scenes into stunning monochrome images with unparalleled control, live in the viewer.

[!IMPORTANT] With Aperture Viewer's advanced Post-Processing capabilities, you can achieve sophisticated black & white conversions directly from your standard color scenes. The techniques described below leverage the live preview and fine-grained controls available in APS.

The Direct Approach: Real-Time Black & White Conversion

The most straightforward and powerful way to create black & white images in Aperture Viewer is by using the dedicated controls in the Post-Processing tab.

Step 1: Compose Your Color Scene

  1. Light Your Scene Normally: Set up your desired lighting using standard environment presets (Windlights/EEs), local lights, etc. Focus on good composition, interesting shadows, and a good range of tones in your color scene.
  2. Open APS: Press Ctrl+Shift+P to open the Aperture Phototools Suite and navigate to the Post-Processing (Post) Tab.

Step 2: Convert to Black & White

  1. Locate Saturation Control: In the "Color Balance & Saturation Settings" section of the Post tab, find the Saturation slider.
  2. Desaturate the Image:
    • To achieve a pure black and white image, move the Saturation slider all the way to 0.0.
    • Your scene will instantly transform into monochrome in the viewer, providing a live preview.

Step 3: Fine-Tune Tones with Luminance Weights

Once you have reduced saturation (partially or fully to 0.0 for black & white), the Luminance Weights become a critical tool for controlling how the original color information contributes to the final grayscale tones or the desaturated color image.

  1. Understand Luminance Weights and Their Interaction with Saturation:
    • The Lum Red, Lum Green, and Lum Blue sliders adjust the contribution of each primary color channel to the overall perceived luminance (brightness) of your image.
    • When Saturation is 0.0 (Pure Black & White): These sliders directly determine how colors are mapped to shades of gray. For example, increasing Lum Red will make areas that were originally red appear as brighter shades of gray.
    • When Saturation is Low (but not 0.0 - Desaturated Color): The Luminance Weights still define the underlying grayscale structure of the image. The remaining color (from the Saturation slider not being fully at 0.0) is then applied on top of this grayscale base. So, adjusting Luminance Weights will change the brightness of different colored areas even in a desaturated color image, influencing the final perceived tone and contrast of those colors.
    • When Saturation is 1.0 or higher (Full Color): The direct visual impact of Luminance Weights is minimal to none, as the full color information is present and overrides the subtle shifts in the grayscale underpinnings. The default NTSC weights are generally used implicitly in full color rendering.
    • Therefore, for black & white or significantly desaturated images, these sliders are powerful. For full-color images, their direct manipulation is less relevant.
  2. Adjust for Impact (Especially in B&W or Low Saturation):
    • Skin Tones: In B&W, adjusting Lum Red (and to a lesser extent, Lum Green, as skin often has yellow/orange undertones) can significantly change how skin tones render, from light and smooth to dark and dramatic.
    • Sky: In B&W, reducing Lum Blue will darken blue skies, creating strong contrast with clouds. Increasing it will lighten the sky.
    • Foliage: In B&W, Lum Green (and Lum Red for autumn colors or yellowish greens) will dictate the gray tones of plants and trees.
    • Experiment by adjusting each slider, especially after setting Saturation to 0.0 or a very low value, to see how it affects the tonal relationships in your scene.

[!TIP] The default Luminance Weights are based on NTSC standards (Red: 0.299, Green: 0.587, Blue: 0.114). These provide a "standard" conversion to grayscale when Saturation is 0.0. Deviating from these defaults is key to artistic B&W interpretation, allowing you to emulate traditional color filters used in film photography (e.g., a "virtual red filter" effect by significantly increasing Lum Red and decreasing Lum Blue and Lum Green).

Step 4: Refine Overall Tonality with Tone Mapping Sliders

After setting your B&W base with saturation and luminance weights, use the tonal controls in the "HDR & Tone Mapping Settings" section to perfect the image:

  • Exposure: Adjust overall brightness if needed.
  • Contrast: Increase for a punchier, more dramatic B&W image, or decrease for a softer, more ethereal look. This is often a key adjustment in B&W.
  • Highlights & Whites: Recover detail in the brightest parts of your B&W image or make them crisper.
  • Shadows & Blacks: Lift shadows to reveal detail or deepen them for more impact.
  • Crush Blacks: This can be particularly effective in B&W photography. Slightly lifting the black point with "Crush Blacks" (and adjusting "Crush Point") can give a classic matte finish to the darkest tones or a cinematic, faded look.

Step 5: Add Texture with Film Grain (Optional)

  1. Navigate to Effects Settings: Still within the Post tab, find the "Effects Settings" section.
  2. Apply Film Grain:
    • Adjust Grain Amt (Grain Amount) to control the visibility of the grain.
    • Adjust Grain Rough (Grain Roughness) to change the size and texture of the grain.

[!TIP] Film grain often enhances the aesthetic of black & white images, adding texture, reducing the "digital" feel, and can even help blend tones in subtle gradients.

Step 6: Final Snapshot

Once you are satisfied with your real-time black & white adjustments in APS, take your final snapshot. The image saved will be exactly what you see in your viewer.

Aperture Viewer's live Post-Processing capabilities empower you to make artistic decisions for your black & white photography with immediate visual feedback. Experiment with these tools to develop your own signature monochrome style directly within the virtual world!