Visual Newsletter
Have you installed Visual 2.6?

Experience calculation speeds faster than you thought possible with the power of Visual 2.6.

Tips and Tricks for Visual 2.6

Computer Requirements

Your computer must have the following requirements to run Visual 2.6:
  • Operating System: Microsoft Windows 2000/XP/Vista.
  • Processor: Intel Pentium 4 processor, AMD Athlon 64 or AMD Opteron (2.0 GHz minimum.)
  • Memory: 512 MB minimum, 1 GB recommended.
  • Hard Drive: 30 MB to 120 MB available space.
Note: The Visual 2.6 Custom Installation will automatically verify that your computer has the processor requirements and Windows permissions to install Visual 2.6 . If your computer doesn’t meet the processor requirements, you can install Visual 2.5 from the Visual website

Changing Virtual Memory

The improved calculation speed of Visual 2.6 (10 to 100 times faster) requires the virtual memory on your computer be set to an initial size of 2000 run the calculations. Click on the link below to learn more about how to change virtual memory.

Running Calculations

If your drawing is located at large X and Y coordinates, you may receive an "Error: 0 in 0" message while running a calculation in Visual 2.6. To resolve this error, move the origin of your drawing to X=0, Y=0.

Moving Drawings to X=0, Y=0

  1. From the Modify menu, select Move.
  2. Select the entire design with a selection window. (Tip: You also can select the entire design by pressing the letter L on the keyboard)
  3. Select a Base Point at the bottom left-hand corner of the design.
  4. Enter a Destination Point of 0, 0 in the Command Line and press Enter.

Visual 2.6 Feedback

The Visual Development Team would like to hear your experiences with the new calculation engine in Visual 2.6. Please send an email to the Visual Support Center Please include 'Visual 2.6 Feedback' in the Subject line of the email.

Lessons in Lighting
Starting this month, the Visual Newsletter will include an article titled 'Lessons in Lighting' to support the continuing lighting education of our customers. The planned series of topics in the coming months will include:
  • Photopic and Scotopic Lumens
  • Vision
  • Near-Field Photometry
  • Limits of Rendering
  • Daylighting

These topics will be authored by David DiLaura. David has 38 years of experience in the lighting industry and academia. Prior to joining the company, he was Professor of Illuminating Engineering at the University of Colorado, Boulder, 1981 to 2007. David is a Fellow of the Illuminating Engineering Society and was awarded its Gold Medal in 1994. He has written two books (Photometria and A History of Light and Lighting) and published over 50 technical papers.

Photopic and Scotopic Lumens - 1: An Introduction
Lessons in Lighting by David DiLaura

This is the first in a series of articles on the basic unit of light that is the foundation of the wide range of concepts and calculations that we lighting professionals use day in and day out: The lumen. There is renewed interest in the fact that there are two definitions of the lumen: one for daytime, high light level conditions, and one for nighttime, low light level conditions. These are photopic and scotopic lumens. Virtually all lighting applications today involve photopic lumens. Should they? What are the practical alternatives? How important are the differences? When, if at all, should we be using scotopic lumens as the basis for our work as lighting professionals? This series of eight articles will attempt to answer these questions by exploring the development of the lumen, the technical issues involved in its definition and use, and some recently proposed changes to our professional practice that are based on and involve the differences between photopic and scotopic lumens.

Read the full article
Introducing Hydrel's Paradox Architectural Ingrade

Hydrel’s Paradox Architectural In-grade sets the standard for sealed in-grade technology and is perfect for applications that demand minimal aperture size, shallow luminaire depth, or encounter application specific limiters that require sealed technology. The Paradox Series sealed modular in-grade luminaires are multi-purpose units designed for up lighting architectural and landscape features, and can be flush mounted into a variety of substrates or landscape materials.

Specification Sheets