Efs 18-200mm f 3.5-5.6 is đánh giá năm 2024

Tôi đang dùng 550d + kit 18-55 giờ muốn có 1 em để tiện bắn tỉa 1. Kêt dải tiêu cự con 18-200 dạng All in 1 tiện quá chụp các thể loại, vác đi đâu cũng được đỡ phải thay lens. đang kết em này đẩy kit đi. 2.múc thêm em 55-250 cho đủ bộ double kit. thêm được 50mm tiêu cự -> bắn tỉa xa hơn tý. Em nghiên vê phương án 1 vì nó tiện. Các cao thủ tư vấn giúp em với _so về chất lượng ảnh 2 con trên con nào hơn và nên lấy em nào hơn ạ. _Lợi và hại giữa 2 em này thế nào? _các bác có thể tư vấn luôn dùng lens nào cho kinh tế hơn, và mua 2 con lens này ở đâu rẻ ạ. Thank các pro.

The EF-S 18-200mm F3.5-5.6 IS is Canon's latest zoom lens for APS-C format DSLRs, introduced as a companion to the EOS 50D. Its announcement in August this year came as no great surprise, as wide focal length range 'superzooms' are clearly popular amongst photographers seeking an all-in-one lens for travel and everyday shooting. The most obvious example of this is the runaway success of Nikon's AF-S 18-200mm F3.5-5.6G VR, and a Canon equivalent has almost certainly been the most-requested lens on our forums.

With its 11x zoom range, the 18-200mm becomes Canon's most ambitious consumer-level zoom to date; the company has previously shied away from producing relatively inexpensive superzooms, with its only previous foray into this sector being the 28-200mm F3.5-5.6 (USM) for 35mm SLRs from late 2000. And while it's this older lens that the 18-200mm most strongly resembles, Canon has managed to squeeze plenty more into the design in the intervening eight years. The zoom ratio has been stretched to a 35mm-equivalent range of 29-320mm, and the new lens incorporates Canon's latest compact image stabilization unit (as seen on the EF-S 18-55mm F3.5-5.6 IS and the EF-S 55-250mm F4.5-5.6 IS), which offers automatic panning detection and (according to the company) four stops of stabilization. All this has been achieved using a suitably complex optical design of 16 elements in 12 groups, including two UD glass elements and two aspherical elements which are designed to minimize chromatic aberration and ensure crisp corner-to-corner detail across the zoom range. Rounding off the specification is a minimum focus distance of 45cm/1.5ft at all focal lengths.

One design decision may however cause a degree of dismay; the lens uses a relatively unsophisticated micro motor system for autofocus, as opposed to the ring-type USM design more commonly seen on mid-range lenses such as the EF-S 17-85mm F4-5.6 IS USM. Consequently, potential buyers may struggle to find any obvious advantage over Tamron's recently announced 18-270mm F3.5-6.3Di II VC LD Aspherical (IF) Macro, which sports a longer zoom range and Tamron's own optical stabilization system. Aside from this, Canon have produced a lens which is clearly designed to counter the undeniable buyer appeal of Nikon's popular 18-200mm VR head-on; so how does it match up to the challenge?

Headline features

• 29-320mm equivalent focal length range; F3.5-5.6 maximum aperture
• Optical image stabilization – 4 stops, automatic panning detection
• EF-S mount for Canon APS-C DSLRS only

Angle of view

The pictures below illustrate the focal length range from wideangle to telephoto:

18mm (29mm equivalent)200mm (320mm equivalent)

Canon EF-S 18-200mm 1:3.5-5.6 IS specifications

Street price • $699 (US) • £550 (UK) Date introduced August 2008 Maximum format size APS-C Focal length 18-200mm 35mm equivalent focal length (APS-C) 29-320mm Diagonal Angle of view (APS-C) 74º - 8º Maximum aperture F3.5-5.6 Minimum aperture F22-36 Lens Construction • 16 elements / 12 groups • 2 UD elements • 2 Aspherical elements Number of diaphragm blades 6, rounded Minimum focus 0.45m/1.5ft Maximum magnification 0.24x at 200mm AF motor type Micro motor Focus method Internal Image stabilization • 4 stops • Automatic panning detection Filter thread • 72mm • Does not rotate on focus Supplied accessories • Front and rear caps Optional accessories • EW-78D Hood • Case Weight 600 g (21.2 oz) Dimensions 79 mm diameter x 102 mm length (3.1 x 4.0 in) Lens Mount Canon EF-S only Other Supplies distance information for E-TTL II flash metering

* Supplied accessories may differ in each country or area

Foreword / notes

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