Good shooting technique must then be employed. anything with a little detail in it will work for this requirement. I also prefer that the focus target stands up by itself.Īlong with a focus target, a measurement scale must be running through the frame near the target - it must be visible from foreground to background.Ī tape measure, sidewalk, carpet. The target needs to have good contrasting colors to provide to the camera's phase-detection AF system. This distance is typically the distance I expect to use the lens at - but not near an infinity focus distance. I want a target that is flat and large enough to more-than-cover the selected AF point (I usually test with the center AF point) at the distance I am calibrating at. OK - back to the question: How do you focus test a camera and lens? The same lens works great on all of my other bodies and the camera works great with the many other lenses I've used with it. Variations can occur between various lenses and camera bodies.Ĭase in point is that my Canon EF 400mm f/2.8 L IS USM LensĪnd my Canon EOS 5D Mark II DSLR do not play nicely with each other - back-focusing is the result. I'll interrupt my question to emphasize the point that this is a camera and lens combination test. How do you focus test a camera and lens combo? So, an out-of-calibration defect is a serious issue to have.
If a camera or lens does not focus where desired, the images are often not usable. While I seldom have a problem with Canon or Nikon cameras and lenses, focus calibration issues are the primary defect I find - especially with third party AF lenses. Upon receiving a new camera or lens and after a visual inspection, the first test I perform is a focus calibration test. Important shots missed due to equipment problems are also potentially costly to me. Or at least within the manufacturer warranty period. Owning each camera and lens outright leaves me personally on-the-line financially for verifying the operation of each within the retailer return period. I love getting to use this gear, but the logistics definitely get complicated -Īnd my credit line is generally not happy with me as nearly every camera and lens reviewed on this site to date has been purchased retail. Canon USA Refurbished Inventory Refresh: Mount Adapter EF-EOS R - Only $63.99, RF 24-70 and RF 70-200 F2.8 Just Arrived, RF 100-500 Still AvailableĪ double-edged sword in my life is the quantity of cameras and lenses that I purchase, receive, evaluate, use, review.
SONY CALIBRATION TOOL FREE
SONY CALIBRATION TOOL PRO
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