![]() It had positive reviews and included a built-in bubble level, which was a deal-maker. To calibrate my autofocus lenses, I ended up ordering a Datacolor SpyderLensCal from B&H. With three DSLR cameras and six autofocus lenses, plus a 1.4x teleconverter, outsourcing the work would quickly add up even with a price break. I have heard of camera repair shops offering a calibration service often for one camera body and two lenses around $100. My (Nikon) cameras have an "Autofocus Fine-Tune" setting which I had never attempted to use. I decided to try calibrating my gear before sending anything out for repair, and I'm glad I did. The teleconverter had always been slightly out of focus, and with larger resolution image sensors, that issue was even more obvious. ![]() It reminded me of my 1.4x teleconverter that I've never been impressed despite reviews stressing preservation of detail. I wasn't sure if the lens needed a repair, but my gut said the lens and camera combination needed a calibration, as both components worked well apart from one another. The issue only appeared in that one combination, and the focus was practically useless, leaving me to focus manually. While photographing at a job recently, I ran into a back-focus issue with a camera and a telephoto lens.
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