Acd Systems Acdsee Photo Studio 20 V20.2 Build 593 ((full)) May 2026

ACDSee Photo Studio 20 Review (v20.2 build 593): The Veteran’s Middle Child

Review Date: April 2026
Version Tested: 20.2.0.593 (64-bit)

User Experience and Interface

The interface in Photo Studio 20 strikes a balance between professional density and intuitive design. The dark-mode theme reduces eye strain during long editing sessions. The layout is customizable, allowing users to dock windows and toolbars where they see fit, creating a personalized workspace that prioritizes the tools they use most.

The Verdict

ACDSee Photo Studio 20 v20.2 build 593 is a compelling choice for photographers who demand speed and ownership of their software. By combining one of the industry’s fastest database engines with a comprehensive suite of non-destructive editing tools, it offers a complete workflow solution. For users looking to escape the "rent-to-own" model of modern creative software, this build provides a stable, feature-rich sanctuary for their digital photography. ACD Systems ACDSee Photo Studio 20 v20.2 build 593

Since "ACDSee Photo Studio 20" typically refers to the 2023 release of their flagship "Ultimate" product, this analysis focuses on the architectural changes and specific feature implementations introduced in this generation, with specific attention to the stability and functional improvements found in the .2 update cycle.

Non-Destructive Editing (Develop Mode)

Open an image in Develop mode to apply non-destructive adjustments. Changes stored as metadata. Key controls:
- Exposure: Brightness, Contrast, Highlights, Shadows.
- White Balance: Temperature & Tint, Auto WB.
- Tone Curves: RGB and luminance curve adjustments.
- Color: Vibrance, Saturation, HSL control.
- Detail: Sharpening and Noise Reduction (luminance/chroma).
- Lens: Remove vignetting, distortion, chromatic aberration.
- Local adjustments: Brush and Gradient tools for selective edits.
History panel: revert, step backward, or reset to original.
Presets: Save commonly used develop settings as presets for batch application.

What Build 593 Brings to the Table:

Light EQ™ Tool: This is ACDSee’s proprietary feature that allows you to brighten or darken specific tonal ranges (e.g., only the shadows or only the midtones) without clipping. Build 593 fixes a previous bug where the Light EQ™ histogram would misrepresent after local adjustments.
Color EQ & Split Toning: The build introduces smoother slider granularity for split toning, addressing user complaints from v20.0 about "stepped" color transitions.
Lens Correction: Build 593 added profiles for 37 additional lenses, including several Tamron and Sigma G2 models.
Perspective Correction: While not AI-based (that came in v21), the manual keystone tool in this build is stable and predictable, with zero artifacting.

Important Note: This version does not include AI-powered masking or sky replacement. That arrived in later versions. However, for traditional luminance and color masking, v20.2 build 593 is rock solid. ACDSee Photo Studio 20 Review (v20

2. AI-Powered Face Detection & Recognition

This is the headline feature of the v20 series, representing ACDSee’s push into computational photography.

Local Processing: Unlike cloud-based solutions (Google Photos), ACDSee performs all AI face detection locally. This is a critical privacy feature for professional studios handling sensitive client data.
The "Face Detector" vs. "Face Recognizer": Build 593 distinguishes between detecting a face (identifying coordinates) and recognizing a face (identifying a name).
- The Deep Feature: The AI scans images and groups faces into "Unnamed People." The system uses vector mapping to suggest names based on previous tags. The accuracy in v20.2 handles difficult angles (profiles) significantly better than v19, though it struggles less with low-light grain than earlier iterations.
Workflow Integration: Once tagged, these faces become searchable metadata fields. This allows a photographer to query "John Doe AND Sunset" without ever opening an editing tool, blending DAM (Digital Asset Management) with CRM (Customer Relationship Management).

Part 5: What Was Fixed in v20.2 Build 593? (The Changelog Deep Dive)

Users who upgraded from v20.0 or v20.1 to build 593 experienced a tangible reduction in friction. Here are the most critical patches: Non-Destructive Editing (Develop Mode)

Windows 10 Creators Update Compatibility: ACDSee v20.0 would crash when using the Windows Ink workspace. Build 593 completely decoupled the UI from Windows Ink, providing stability.
HEIC/HEIF Support: Microsoft added HEIF (High Efficiency Image File Format) support via the Store. Build 593 implemented a direct API call to the system codec, allowing users to view iPhone 7 Plus portrait mode photos without conversion.
Network Drive Stability: Previous builds would throw "Network path not found" if a mapped drive disconnected and reconnected. Build 593 introduced a 5-second retry timer, eliminating the need to restart the app.
Clone Brush Cursor Alignment: In the Edit mode, the clone brush cursor was misaligned by 2px on 4K high-DPI screens. Build 593 fixed the DPI scaling logic.
Batch Rename Wizard: A rare bug where leading zeros would drop (e.g., IMG_001.jpg becoming IMG_1.jpg) was squashed.

ACDSee Photo Studio 20 (v20.2 build 593) — Quick, Practical Guide

3. The "Edit" Mode is Abandoned

The built-in pixel editor (the old "Edit" mode) has not seen serious development in 5 years. Cloning is clumsy, healing leaves halos, and text tools are pathetic. For any serious retouching, you must set an external editor (Photoshop, Affinity). Build 593 did not touch Edit mode at all.