The 1/80 second shutter speed was only slightly longer than what I would typically need to handhold a lens at the 75mm focal length I was using and since I was leaning against a deck railing, I expected no issues with camera shake There was no time to retrieve a tripod, so I counted on OS (Optical Stabilization) to cover my handheld shake. It is always a risk to use an unknown lens for a purpose that you care about, but it is usually safe to pick a middle focal length and an f/8 aperture, and that is what I did in this situation. The 18-200 was already mounted to my Canon EOS 60D and I only had a couple of minutes until the light would be gone. The 18-200 C had just arrived with a strong thunderstorm arriving on its heels.īreaks in the heavy clouds were allowing streaks of light to reach the distant hillside that was covered in light green early spring leaves (a subject I had been targeting) and I needed to act fast. This lens will autofocus properly even in the focal length range with an f/6.3 max aperture.
#Canon zoom objektiv 18 200 iso#
You will, however, often be reaching for high ISO settings when using such lenses.Įven though all APS-C format Canon DSLR cameras require a max aperture of f/5.6 or wider to autofocus, While the Sigma 18-200 C lens ranks near the slowest among this group, it does not vary from the others by more than 1/3 stop and 1/3 stop is not going to be a decision factor for most. Sigma 18-200mm f/3.5-6.3 DC Macro OS HSM C Lens Here is a chart comparing the max aperture step-down focal lengths for some of these APS-C format lenses.Ĭanon EF-S 18-135mm f/3.5-5.6 IS STM Lens Superzoom lenses all have narrow maximum apertures – generally the narrowest max apertures you will find on any lens at a comparable focal length. The range of focal lengths definitely lends itself to such multi-purpose uses. Sigma has targeted travel and family use for this lens. This range of focal lengths meets the typical wide angle needs of a general purpose lensĪnd far exceeds the telephoto focal length typically found in such lenses.
#Canon zoom objektiv 18 200 full#
Mounted on one of these bodies, the 18-200mm focal length range provides an angle of view similar to a 28.8-320mm lens mounted on a full frame body. The Sigma 18-200mm f/3.5-6.3 DC OS HSM C Lens, as denoted by the "DC" in its name, is compatible only with ASP-C/1.6x FOVCF sensor format DSLRs. With the advances the world has seen in manufacturing technology and the quality Sigma has been delivering in their Global Vision lenses, I was optimistically skeptical. With that quantity of ultimate lens qualities found in the Sigma 18-200mm f/3.5-6.3 DC OS HSM C Lens, I approached this review with a healthy dose of skepticism. It is also small, light and priced right. There is no lens that covers an extreme range of focal lengths, has an ultra-wide aperture, has incredible build quality but remains small and light, has amazing image quality at all available settings – and is inexpensive.Įven though this lens does not have the longest available focal length range, it is still a superzoom lens with a very attractive do-it-all potential.
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#Canon zoom objektiv 18 200 pro#
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