![]() Hey Kevin! When we perform focus calibrations we first want to identify where precisely the calibration is needed, as with the 16 potential calibration points available for the 150-600mm Contemporary you could inadvertently end up altering the lens’ overall focus performance if you make adjustments to the entire operating range. Hope this helps to clear things up, but do let us know if there’s anything else we can do to get you back out making new photos! If you find that both pieces of equipment are current with firmware and you’re still experiencing focusing issues you can send the lens in to us for evaluation, you’ll find all of our repair team’s contact information and an online repair order form on our site at. The a7 III is currently on version 4.01 and the 24-70mm DG DN Art is currently on version 03 you can find our firmware update drivers for this lens here. When trying to diagnose potential equipment performance issues it’s always a good idea to start by confirming that both the lens and the camera have the most recent firmware, you can find this information in your camera by navigating to the “Version” line item in the Setup menu. If you find your lens is consistently placing focus outside of where the camera is directing it to there may be a physical issue with either the camera or lens that would need to be addressed by a repair technician. Mirrorless cameras like your a7 III on the other hand have their autofocus sensors integrated directly on the imaging sensor, which effectively eliminates the potential for misaligned autofocus and likewise eliminates the need for focus calibrations on mirrorless platforms. ![]() ![]() DSLR cameras like Sony’s A-mount offerings of the past use a sensor for autofocus operations that is separate from the imaging sensor, if there’s any variation between these two sensors it can lead to front or back focusing issues which is where lens calibrations come into play. Hey there Mariano! Sony’s in-camera autofocus adjustment feature is primarily intended to allow users to affect the focus of older A-mount lenses when used in conjunction with one of their A to E mount converters, I suspect you’ll find that this feature will report it is “Invalid with this lens” if you try to select it with any native E-mount lens attached. ![]()
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