Very fast, real-time native 48-bit editor

Most functions written with SSE2 and SSE4 Technology

Easy and Intuitive controls, designed just for Sagelight (read more here and here)

Powerful 'Quick Edit Mode'

Extensive user support, including blog (see it here), discussion board (see it here).

Professional level functions

48-bit RAW File Support with Highlight Recovery

Image Layer Blending with 20+ modes, including Soft Light, Hard Light, Overlay, Multiply, etc.

High-Pass Filter with C*I*E LAB support

Dual Definition (aka "Clarity"/Local Contrast) layers

Sagelight Vibrance

3rd-Party Plug-In Support (Adobe Filters, 8BF, etc.)

Pro Saturation mode with 13 different Saturation Color Space Modes (read more here)

Powerful Manual Curves with 13 Color Spaces (RGB, C*I*E LAB, XYZ, HSL, HSB, etc.)

Undo Brush allows you to merge image layers with a brush you control

Dodge and Burn, and Clone Brush

C*I*E LAB modes on Blur, Unsharp Mask, Image Blending

Unlimited Undo History with an "Undo Brush" to merge or blend different image states

"Smart Light" features to help add light or create contrast without destroying image information

Tooltips on every control and extensive help topically located where you need it.

Very powerful masking functions (read more here)

Tutorials for major functions

Video Tutorials (see them here) (also located within Sagelight)

Hundreds of Gallery Examples (see them here)

Extensive Auto Color/Auto Level algorithms to help balance your image (read more here)

Straighten Horizon (arbitrary rotate) with Auto Crop

Resize, Crop, Add Border, Red Eye removal, Print, etc.

Multiple Color Space Support (read more here)

Unsharp Mask, Gaussian Blur, Median, and Skin Smoothing and noise removal functions (C*I*E LAB Support)

More than 50 different functions and effects

48-bit, compressed tiff (read and write) support

ICC Profile Support

Real-time Histogram with composite curve display

Core engine re-written in SSE2/SSE4 technology (i.e. ultra fast)

Many function and effects modes, including

48-bit Gaussian Blur, Unsharp Mask, Channel Mixer, variable Saturation Increase, Median function, Skin Smoothing Functions, Image Blending, Vignette, Photo Filter/Gradient, Skin/Image smoothing, abitrary rotation (i.e. straighten horizon), etc.

Standard functions such as Posterize, Threshold, Maximum, Median, etc. -- all with multiple options for interesting effects.

General effects such as Duotoning, Color Contrast functions, Soft Glow/Focus, Moasic 2d/3d, Vintage Picture, edge effects, glass, plastic, oil paint, etc.

All Brushes (such as Clone, Dodge and Burn, and Undo Brush) are fast and realtime, making these functions a lot more useful and high-end quality.

New Auto Levels and Auto Color routines with Histogram Display

Raw Highlight Mode Recovery Support

The mini-toolbar which is much more useful and out of the way -- the 2.0 version was too big and is now gone

File Info function that displays Exif information