There’s a fair amount of aliasing towards the center, but that should all be a blur in actual use. Gray Gamma 2.2 is as good as anything.Īnd here’s a really big file (12000×12000 pixels, 200 spokes), for those making a really big target. Since every pixel in the files is either pure black or pure white, it doesn’t matter what grayscale profile you assign.
When you open them in Photoshop, you’ll see something like this: If you want bigger targets, scale them using bilinear interpolation. The Chart chart contains a sine Siemens star located in the center of the chart, with grayscale and logo tiles at the four corners. If you want to print on smaller paper, crop the targets, but print at 360 or 300 ppi. To download a file, right-click on the link below, then choose “Save as…”įor optimal results, don’t scale the targets send them to your printer driver at 360 ppi in the case of the Epson files, or 300 ppi for the Canon ones. ZEISS 15 - 30mm CZ.2 Compact Zoom Lens (PL Mount, Feet) The ZEISS 15 - 30mm CZ.2 Compact Zoom Lens in PL mount with focus markings in feet is a short wide-angle zoom lens for production shooting on formats from Micro Four Thirds to Full-Frame sensors. There are three stars for Epson printers, which want 360 ppi input images, and three for Canon printers, which take 300 pi images. All are sized for 16-inch (410 mm) stars. Scotch tape or some other adhesive material to keep the focus chart on the wall. Make sure to print on regular paper, not anything glossy like photo paper. You can print it on a laser printer or inkjet (doesn’t really matter). Below are links to six printable targets. Print out either this Siemens Star Focus Chart or this Focus Test Chart on regular letter size paper.
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