Registered since September 28th, 2017
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Tag selected: focus.
Saved by uncleflo on January 6th, 2019.
This is a simplified subjective method of testing lenses optical sharpness. This should not be confused with tests for focus accuracy and discrimination in a 3D environment, that is a totally different issue although often confused by the inexperienced. A focus accuracy test is suggested here Focus Test. The advantage over this method, compared to just taking a shot of a garden etc, is elimination of variables such as subject and camera movement, insufficient depth of field, flatness of field and variations in focus location. It uses a nice consistent high contrast subject to make comparisons easy; checking sharpness on general photographic views is not very easy. As the method is subjective, it is worth testing against a known good lens for comparison.
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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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Saved by uncleflo on July 23rd, 2016.
The EF 28-300mm f/3.5-5.6L IS USM Lens from Canon is an all-in-one zoom lens for versatile and easy subject selection for multiple photographic applications. This lens offers the highest optical performance in its class, plus the convenience of focusing as close as 2.3 feet over the entire zooming range.
Saved by uncleflo on July 19th, 2016.
Seize the moment. Every. Single. One. SuperSpeed USB 3.0 and Gigabit connectivity via Ethernet or the WFT-E8 WiFi adapter brings superb workflow flexibility to any location while the built-in GPS can auto-update time whenever you change a time-zone by connecting to a global network of GPS satellites. The crop and resize functionality lets you send the frame as you want it to be seen, without the need for a PC.
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Saved by uncleflo on February 11th, 2015.
It’s landing page examples time again, and this time I’m going to focus on critiquing the pages from an A/B testing perspective. Each example will examine the thought process you’d go through when analyzing a page (or the reaction a visitor might have when arriving for the first time), a testing hypothesis for how the page might perform better, and some examples of what you could test to prove your hypothesis.
Saved by uncleflo on November 13th, 2014.
Thousands of workers will be heading to a new job this month, excited and nervous to prove they've got what it takes. After the flurry of hiring that typically happens in the first quarter, the fall tends to be the second-biggest hiring period of the year, according to career coach Kathleen Brady, author of "Get a Job!" and the director of career development at Georgian Court University. Employers refocus on their top initiatives and capitalize on any remaining budget for new hires.
Saved by uncleflo on September 2nd, 2014.
Naviter is a Slovenian based IT company which focuses on development and marketing of glider pilot software to worldwide audience. Our products are aimed towards sailplane, paraglider and hangglider pilots. Our trademark products include SeeYou, Oudie, SeeYou Mobile, SeeYou Recorder, SeeYou Competition, Soaring Spot and Oudie Updater.
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Saved by uncleflo on August 4th, 2014.
The World Can Transition to 100% Clean, Renewable Energy Starting Today. Demonstrate scientifically that using wind, water, and solar (WWS) to power our energy for all purposes (electricity, transportation, heating/cooling, and industry) paired with energy efficiency measures makes economic, health, and environmental sense. Give you the tools to adopt renewable energy solutions that make economic and environmental sense for your family, business and community. Highlight renewable energy projects and people doing great work - the transition is already underway! Have fun (Seriously, we’re going to have a great time …. you should join us)
Saved by uncleflo on July 19th, 2014.
Freeway capable EVs are more expensive than slow EVs because you need more batteries (sometimes: could use buddy pairs at lower voltage) and a high voltage controller. The same motor can often still be used, just by advancing the brushes, and maybe adding a blower to keep it cool. So, it seems to me that the best place to focus efforts to making freeway capable EVs more affordable (under $1500?), is to focus on the controller. About $1200 or so can be shaved off the cost of a new controller.
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Saved by uncleflo on September 15th, 2013.
David R. Cooper talks about the Microsat Systems Canada Inc. (MSCI) COMMStellation(TM), a communications constellation comprised of 78 microsatellites focused on providing backhaul capacity to the entire globe.
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