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I own the E PZ 18-105mm f/4 G OSS lens. It is a crop-sensor lens. I believe the 24-105mm lens is for full sensor cameras. Another difference is the designation PZ indicates that the lens uses a Pull Zoom switch on the side of the lens that increased or decreases the zoom smoothly using a built in electronic motor. This ability to zoom at a constant and smooth rate was my reason for choosing this lens. It also maintains a relatively stable center of balance and doesn't externally extend when on a gimbal. On the Ronin SC the Focus Pull wheel controls the Zoom Pull feature of this lens. The negatives of this lens are that it is big and heavy enough that balancing the gimbal is difficult with this lens on my a6300 and changing focus is slow, too slow for sport shooting and sometimes is a problem when shooting fast moving wild life. I also have the 18-135 mm lens that lacks the Pull Zoom feature, it has a manual mechanical zoom mechanism and it is far better if changing focus quickly. As I primarily shoot video this is not important to me and as such I will be selling my 18-135mm lens. If you have a full sensor camera you will probably want the 24-105 lens. If you have an a6X00 camera (cropped sensor) and are shooting mostly still shots, I would recommend the 18-135mm lens. If you are using a a6X00 camera for video, I recommend the PZ 18-105 for video. The PZ 16-50mm kit lens is easier to balance on a gimbal and is better suited for vlogging, but has lesser quality and obviously doesn't compare in zoom range.
Sorry, there was a problem. Please try again later.The obvious difference is the 18 vs 24. The other difference is the 18-105 is a power zoom lens for crop sensor cameras and the 24-105 is for full frame cameras. If you’re a beginner and own a crop sensor camera like the a6000, I would recommend purchasing the 18-105. Two reasons, the price and the range that an 18-105 covers.
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