uncleflo
Registered since September 28th, 2017
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Lenses Database - DxOMark
Saved by uncleflo on May 11th, 2021.
DXOMARK's comprehensive camera lens test result database allows you to browse and select lenses for comparison based on their characteristics, brand, price, lens type, lens size, focal range and aperture. You can also select a camera to see the results for all the lenses tested on it. With DXOMARK you can display the lenses with three different views - Grid, List or Graph in order for you to have the best solution to compare the filtered results. Choose the lenses you want to compare from the results below. Then in the selection box, you can check up to three lenses at a time to compare their measurements.
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Mandrel Pipe Bender | Useful Tools | Pipe Bending Tools | Plumbers Tools | UK
Saved by uncleflo on August 13th, 2019.
For those who need a tighter bend radius we have designed the Useful-Tools hand operated mandrel tube bender. These machines will allow tubes to be bent with an impressive 2 times tube diameter bend radius with no rippling or cracking of the tube and the absolute minimum of distortion. We have 2 machines that all operate on the same principle, namely the pipe or tube to be bent is located between a formed mandrel and back plate with another formed internal mandrel (bullet) held at a carefully controlled position inside the tube. The tube is secured firmly to the main mandrel and when the mandrel is turned the tube is pulled over the internal mandrel as it wraps around the main mandrel. (This internal "Bullet" holds the tube open and helps reduce distortion to a minimum.)
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ISO 12233 Test Chart
Saved by uncleflo on January 6th, 2019.
In 2000, the International Standards Organization adopted ISO Standard 12233: Photography -- Electronic still-picture cameras - Resolution measurements for the measurement of camera resolution. This standard is protected by copyright, but the design of the associated test chart seems not to be protected; its description has been available on the Web in an Excel spreadsheet. I have semi-manually converted this to an Adobe Illustrator file which is displayed here. In 2014 and again in 2017, the ISO revised the standard and the chart below was replaced by several new ones. Those new charts are not available here. In principle, you should be able to print this chart and perform resolution tests on your camera. The reality isn't that simple; there are lots of subtleties having to do with focus distance, quality and contrast of your printer, evenness of illumination, surface reflections, etc.
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Moment - Wide 18mm Lens for iPhone
Saved by uncleflo on November 29th, 2018.
The New Wide Lens is an everyday, go-to wide-angle lens for mobile photographers and filmmakers. Its new glass and wide angle design allows your phone to capture 2x more picture. The most advanced lens we’ve ever made, the New Wide Lens captures smartphone photos and videos that are beautiful, crisp, and straight, with no fisheye distortion.
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