There’s a fair amount of aliasing towards the center, but that should all be a blur in actual use. Set the distance ring to the test distance according to the tables in the appendix. 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. Star Test Chart For setting camera back focus Ideal for use with ZEISS CP.2 lenses 28.00. Since every pixel in the files is either pure black or pure white, it doesn’t matter what grayscale profile you assign. Designed to test and set the back focus on DSLR cameras, the Zeiss Siemens Star Test Chart is a professional lens chart that is particularly effective when swapping a Zeiss CP. It is especially useful when adjusting a Zeiss CP.2 cine lens for use on a DSLR camera after the lens mount has been converted from PL to another type (such as EF), or vice versa. When you open them in Photoshop, you’ll see something like this: The Zeiss Siemens Star Test Chart is a professional lens chart that has been used for decades to set the back focus on lenses used on individual cameras. If you want bigger targets, scale them using bilinear interpolation. There are three stars for Epson printers, which want 360 ppi input images, and three for Canon printers, which take 300. 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. Print out either this Siemens Star Focus Chart or this Focus Test Chart on regular letter size paper. 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. SVG format only please, not PDF nor any of the raster formats. Preferably with solid bars, not sinusoidal. There are three stars for Epson printers, which want 360 ppi input images, and three for Canon printers, which take 300 pi images. Need a link to a downloadable Siemens Star Chart in SVG format But not the one in the Wikipedia article, it has too few spokes, looking for 144 cycles or 72 at a pinch. All are sized for 16-inch (410 mm) stars. Below are links to six printable targets.
0 Comments
Leave a Reply. |