i love canon cameras

In this test we will see the new tele-zoom stabilized basic range of Canon. Zoom that beside the new EF-S 18-55/3.5-5.6 IS covering the usual range of 18-200 SUVs, and in this case 50 mm. tip over.

The objective of this pair of Canon zooms, like Nikon, is clear: to counter the market penetration of the kits machines stabilized with the stabilizer in the body than the known 18-200 or 18-250 mm. Moreover, these 250 mm. end seem to have the intention of fighting with the Tamron AF 18-250/3.5-5.6 Di II.

See if the 18-200 range in a kit consisting of two units to equal or better known as Tamron or Sigma.

Although this is EF-S zoom lens comes to replace the EF 55-200/4.5-5.6 II USM so some comparisons are made with this zoom.

With the two zooms in the hands, the newcomer has grown by weight, poise or exterior finish of the plastic material and has been reduced in length and diameter. The external design is completely new, in the zoom ring is now a longer and thinner and continuous striatum and that of the MF, as it does now. Make manual approach to the predecessor model, given the brief of the ring and its clearance was a really complicated. Now we can take comfort and in its spin and counter-spin has little slack side.

The zoom ring has a twist reasonably smooth but lacks continuity, or have small blockages or changes in hardness in its turn. In 45 th pass from 55 to 250 mm.

The filter size has gone from 52 to 58 mm. and other important change is that, despite being closer externally, its internal optical effective diameter has grown, now offers a maximum aperture of f the angular zone 1:4.0 instead of 1:4.5 f the previous model.

The operational design of the zoom lens is equal to the previous model, single-element telescopic lens hood and circular rotational approach. This time the setting of this element is very smooth and without any backlash.

To complete the construction work the displacement of the pupil runs through an inner cylinder or tunnel which is lined in its first 10 mm. Felt initial anti-glare and is subsequently mate with striatum. In this way all the way inside is isolated from the outside to protect the interior against dust ingress. An interesting detail that some higher-end zooms still lack it.

The construction of the base of the bayonet plastic remains without peripheral O-ring.
Last September saw the answer with his Nikon AF-S DX VR 55-200/4-5.6 G in the area of the focal lengths of 18 to 200’s without stabilize installed base range DSLRs with stabilizer in the body.

Now it’s a Canon with a product very similar in purpose, in focal range, optical performance and even paragraphs of benefits and services. The Nikkor also sinned, like the zoom, a high vignetting in favor of obtaining a high contrast in corners from their highest openings.

This abuse of vignetting in some new batches of zooms seem to hint that in the very near future, and this is pure speculation, new DSLRs be provided with an option menu vignetting correction. I recently saw him in the Olympus E-3, Leica and incorporates it into the M-8 encoded with the goals and I think very soon be as common as a function of self-cleaning sensor.

This product, like the Nikkor mentioned, can be described as very effective with the constraints discussed during testing.

Little as his companion kit, the EF-S 18-55/3.5-5.6 IS, quit just as successful as this has gone, he’s going to be uphill all the way to general-18-200’s. This they reserve to see the wide-angle and zoom functions.

For:
- Resolution and contrast in center and corners very high since large openings.
- Construction completed successfully.
- Ergonomics, volume, weight, excellent handling and performance.
- Stabilizer very effective and quiet.

Against:
- Excessive vignetting at maximum aperture throughout the focal range.
- Focus on long runs slow.
- Move the zoom’s terse, with lack of continuity.
- No serial parasol.