Stouffer R550, 5 step reflection guide, increment 0.50
Stouffer R550, 5-step reflection guide
5 steps, increment 0.50, 2 x 4", Dmax 2.05
Step-Wedge R550-Data
5 steps, increment 0,50, Dmax: 2.05, size 50 x 101 mm
Regardless the many variables encountered in exposure and processing the Cameraman's 37-Step Guide helps to produce line negatives of consistent quality, density and line fidelity. After development it tells upon inspection whether line negatives are up to a given standard, and if not, how much correction should be made
The Cameraman's 37-step guide is designed primarily for copy camera use. Like other Stouffer reflection step tablets it can also be used for scanning, densitometry and other quality control applications
RoHS-Compatibility:
Products manufactured and sold by Stouffer Industries are RoHS compliant. All step wedges, step tablets, gray scales, and any other photosensitive quality control device made contain no or less than agreed levels of lead, cadmium, mercury, hexavalent chromium, polybrominated biphenyl (PBB) and polybrominated diphenyl ether (PBDE) flame retardants.
Longlivety:
Stouffer Step Tablets and Gray Scales are made under controlled conditions to meet or exceed the requirements for archival permanence following procedures recommended by the manufacturers of the materials. Archival permanence is usually defined up to 10 years or more. Studies at the National Institute of Science and Technology have shown that the densities of this kind of step tablet will remain stable for at least four years when handled and stored with care.
The primary causes of degradation are use, followed by ( in no particular order) heat, humidity, fingerprints, splashes including spittle, chemical fumes and vapors, attempts to clean the emulsion with anything other than a soft camelhair brush, and abuse.A quality control device that is handled 40 times a day will degrade faster than one that is handled once a week. The user should set a routine to determine the frequency of replacement based upon factors occurring in-house and the foregoing discussion.
We recommend to change the step wedge after 3-6 months and immediately at visual damage
Calibration:
This step wedge is also availabe in calibrated version. Lead time about 4 weeks
