![]() ![]() ![]() Importantly, this solution also allows full-time manual focus override, even when the focus mode is set to AF. The Tamron 24mm F/2.8 Di III OSD M1:2 features an OSD (Optimized Silent Drive) motor that claims to allow near silent auto-focusing. The lens also doesn't offer built-in Vibration Compensation, instead relying on the Sony camera body to provide image stabilisation (if indeed it supports it). There are very few features though - no distance scale, no depth of field scale, not even an An AF/MF switch on the side of the lens to make it easier to switch between the two focusing systems. The focusing ring is generously wide given the overall size of the the lens and it has a ridged, rubberised grip band. Whether or not it will loosen up with prolonged use remains to be seen. Note that the bayonet fit is very firm, so much so that it requires quite a strong twist to mount/unmount the lens. ![]() The Tamron 24mm F/2.8 Di III OSD M1:2 feels solid enough in your hand, and it has a metal mount. You can also use it on a smaller Sony APS-C body, where the effective focal length changes to a classic 36mm due to the 1.5x crop factor.īuild quality is very good, despite the all-plastic construction and the attractively low price-tag. The Tamron 24mm F/2.8 Di III OSD M1:2 is a compact, lightweight wide-angle prime lens, measuring just under 6.5cms in length and weighing in at 215g. The Tamron 24mm F/2.8 Di III OSD M1:2 lens is priced at £399 / $349. This lens is ideal for close-up shooting, offering a minimum focus distance of 0.12m and a maximum reproduction ratio of 1:5. It has an iris diaphragm with seven rounded aperture blades. The optical formula comprises 10 elements in 9 groups, including one moulded glass aspherical element and three low-dispersion elements. It features a maximum aperture of f/2.8, an Optimized Silent Drive focus motor for quiet AF operation, and a moisture-proof construction. The Tamron 24mm F/2.8 Di III OSD M1:2 is a fairly fast, ultra-wide-angle prime lens for Sony's extensive range of full-frame and APS-C sensor mirrorless cameras. ![]()
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