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Quality Control Is Evolving

The motion picture industry is evolving and so is Windense. Digital input and output are upon us and the workhorse X-Rite Model 310T densitometers were discontinued more than 3 years ago. Windense is not only keeping up; we are ahead of the curve.

You may be doing manual control with a densitometer. You may be using a densitometer with Windense. What will you be doing for quality control when your densitometer fails? Now is the time to move from Yesterday to Today and even to Tomorrow.

Yesterday - Densitometers

Quality control software by Windense has been the standard of the industry since soon after the company was formed in 1989. Windense automated quality control by automatically accepting data from the X-Rite Model 310T densitometers and by manufacturing automatic film drives for the 310Ts. Windense is the mostly widely used motion picture software in the world.

Densitometer Performance

Eastman Kodak Company has provided Windense with scanner correlation strips that have been exposed on negative and positive film control stock, processed by Kodak and individually read by Kodak on a densitometer that meets the requirements of ISO 5-2 and ISO 5-3 & are traceable to US National Institute of Standards and Technology. These strips are for sale to assist laboratories with correlating scanner density measurements to density values. Using 19 negative density steps (14 for positive) on actual motion picture film for correlation (calibration) is far superior to densitomter calibration procedures that involve a single density around 3.0 and an open aperture for calibration.

These correlation strips can be used to check densitometers.

Today - Densitometer & Scanners

X-Rite stopped manufacturing the Model 310T densitometer three years ago and maintaining 310T densitometers in good working condition is becoming more and more problematic. Densitometers may be failing but Windense has an answer. The current version of Windense allows motion picture laboratories to use Epson Perfection Model V700 Photo Scanners to replace densitometers and, of course, you can still use densitometers for traditional quality control. Since Windense & scanners are calibrated locally using 14-19 steps you get outstanding instrument to instrument matching and since the scanners are much, much less expensive than 310s you can have a couple of spares.

Tomorrow - Scanners & Image QC (iQC)

In the long-term future there will be no more densitometers and probably no more control strips from the manufacturer. Windense has a solution for that also. Windense iQC (image QC) utilizes a small number of frames in the head leader for embedded quality control. Windense iQC today tracks a 21-step gray scale, LAD, frame uniformity and resolution. Since we are working with a scanner, we can track other things too, e.g. sound density, sound & image position, etc., etc.

What Do You Want?

Now that Windense is scanning the frame and we have images to analyze, what would you like to be measuring? We are happy to hear what you think. Just email us at WindenseNA@Yahoo.com.

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