Below are links to six printable targets. All are sized for 16-inch (410 mm) stars. All are binary (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. To download a file, right-click on the link below, then choose “Save as…”.
![Lens test chart pdf Lens test chart pdf](https://i.ebayimg.com/images/i/272656536543-0-1/s-l1000.jpg)
Camera Lens Testing Chart
The alternative is to do it on the cheap: take the PDF file, print it in an appropriate size, download the code, and start testing. I think some people have posted raster images (e.g. JPEG files) of the chart on the Web; the outline description here should produce a better test chart, as it isn't limited to pixel-level resolution. Shot down a few myths about how the focus test works. The test chart itself is unchanged from version 2.0. V2.0 (12 June 2004) This is a major release, hence the change to version2.x. The test chart has been completely redesigned. It is now much easier to use and it produces more detailed information.
Don’t downsize these targets before printing them. Send them to your printer driver at 360 ppi in the case of the Epson files, or 300 ppi for the Canon ones. If you want to print on smaller paper, crop the targets, but print at 360 or 300 ppi. If you want bigger targets, let me know how big, and I’ll create some and post them here.
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These are monochromatic files. When you open them in Photoshop, you’ll see something like this:
Since every pixel in the files is either pure black or pure white, it doesn’t matter what grayscale profile you assign. Gray Gamma 2.2 is as good as anything.
Epson
Lens Testing Sites
And here’s a really big file (12000×12000 pixels, 200 spokes), for those making a really big target. There’s a fair amount of aliasing towards the center, but that should all be a blur in actual use.