USM stands for Ultrasonic Autofocus Motor. These lenses offer manual focus override and fast, smooth and comparatively quiet ...
Astrophotographer Dan Zafra recently managed to capture rare red sprites flashing in the night sky with the Milky Way and glow from the Aurora Australis.
Finally, a professional, fast, and full-featured Photoshop alternative that won’t cost you a penny or force you into AI ...
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