![]() ![]() On January 15, five days before Joe Biden - who now opposes the death penalty and would like to eliminate it - takes office, a federal prisoner named Dustin Higgs is set to be executed. government has reversed what the New York Times calls an “informal 17-year moratorium” on capital punishment, enacting the “highest number of federal civilian executions in a single calendar year in either the 20th or 21st century.” And they’re not finished yet. To put that in perspective, all 50 states combined executed seven people last year, the lowest number of state executions since 1983. The Trump administration has executed at least 11 people since July, with more still to come. The distinctions may be subtle between a couple of middle apertures, but you’ll know at least which ones are visually sharper than others.As the clock ticks down on Donald Trump’s presidency, his administration has rushed to carry out an unprecedented number of federal executions. ![]() You’re likely to see the differences in sharpness in the definition of the smallest examples of type in the frame. It’s bound to be somewhere around three stops from wide open-so on an ƒ/2 lens that would be ƒ/5.6 or even ƒ/8. (You’re also likely to see fairly pronounced vignetting when shooting wide open.) Using a program such as Lightroom, it’s easy to switch back and forth between frames, or even compare them side by side, in order to determine which aperture produces the sharpest results. You’ll notice right away that the wide open exposures and the fully stopped down shots will both be not quite as sharp as those in the middle of the aperture range. Then adjust to ƒ/16 at one-quarter of a second, and so on, proceeding all the way down to an exposure at the widest aperture-ƒ/2 at 1/250 th.Īfter shooting an exposure at every aperture on your lens, import the images into your computer and take a close look at the details. Shoot a picture, then adjust to ƒ/22 and half a second before taking another picture. Let’s say you’re starting with an exposure of 1 second at ƒ/32. Something like a page of newsprint with very small text is an ideal candidate. It’s this detail that will test the resolving power of your lens. You’ll also want a flat subject with some really fine detail. This will allow you to not only check focus precisely but also ensure you’re not causing any camera shake since you’ll be tripping the shutter remotely. ![]() But the only way to know for sure which aperture is your lens’ sharpest is to test it.Īll you need to perform this test is a light, a tripod and a cable release-or even better, a tethered connection to a computer. It’s bound to get you close to the sharpest aperture. ![]() This rule of thumb has guided photographers to shoot somewhere in the neighborhood of ƒ/8 or ƒ/11 for generations, and this technique still works well. The sharpest aperture on any lens is generally about two or three stops from wide open. One of those tips involved choosing your lens’ sharpest aperture. Last week, we talked about several tips for making sharp photos. ![]()
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