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Multiplying 18-135mm by 1.6x yields 28.8-216mm, the full frame 35mm format camera angle of view equivalent for this lens. Used to determine the full frame angle of view equivalent. Using a smaller image circle means that APS-C sensor format cameras frame a scene more tightly, with 1.6x being the multiplier ( FOVCF) Permitting APS-C-only "EF-S" lenses to be smaller, lighter and less expensive to manufacture relative to their full frame lens counterparts (which remain compatible with the APS-C cameras). With a smaller imaging sensor than full frame models, APS-C format cameras do not require the larger image circle projected by full frame compatible lenses, Permitting APS-C-only "EF-S" lenses to be smaller, lighter and less expensive relative to their full frame lens counterparts (which remain compatible with the APS-C cameras). The focal length range of this lens is a hugely valuable asset.Īs an "EF-S" lens, the 18-135 IS USM is only compatible with Canon APS-C format cameras. There are times when the ideal subject distance cannot be obtained, perhaps due to an obstacle (such as a wall), and in those cases, having a zoom range to work with permits ideal subject framing from the The focal length chosen for a particular image determines the distance required for proper framing and in turn, the perspective. Narrowing down the focal length or focal length range ideal for your photographic needs is the first criterion for lens selection. Read on to learn more about this feature. The EF-S 18-135mm USM has Canon's first Nano-USM AF motor implementation, promising us the silence and smoothness of STM with considerably faster AF drive. Seeing "USM" (Ultrasonic Motor) in the lens name seems very common for those of us using Canon lenses and we usually count on very fast focusing driven by a Ring-USM variant.īut, this Ring USM is like no other we've seen before. The latest lens receives Ring USM-driven AF.
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The second generation received a stepping motor, producing smooth and very quiet focus acquisition and tracking that was ideal for Movie Servo AF. The first model featured a cost-effective DC motor. This is Canon's third iteration of the EF-S 18-135mm image stabilized lens. Its great functionality including image stabilization and its modest price. The EF-S 18-135mm f/3.5-5.6 IS USM Lens is attractive on many fronts, including its wide (7.5x) focal length range, its relatively small size and light weight, its fast, smooth and accurate autofocusing, New and Used Sony Alpha 1 Bodies In Stock at B&H (Save $845.00 on Used Version).Sony Shaves $300.00 from Sony FE 70-200mm f/2.8 GM OSS Lens Price, Free Filter, Save an Additional $415.00 Buying Used.Canon RF 400 F2.8 L IS USM Lens In Stock at Amazon.
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