Tamron AF18-270mm F/3.5-6.3 Di II VC PZD; Sometimes One Size Does Fit All Page 2
With visions of 540mm dancing in my head, I did try using my Pro-Optic tele-converter on the lens but quickly ran afoul of the two-stop light loss and f/6.3 maximum aperture at 270mm, which the EOS 50D’s autofocus was not capable of handling. Then I remembered the old rule of thumb that manually focusing is recommended when using a tele-extender with a lens that has a maximum aperture of f/4 or slower. In addition to a wide and grippy zoom ring, the lens has a narrow, rubberized manual-focusing ring—much as on similar zooms—hanging off at the end. And much like other zooms there’s little if any focusing drag and while that might not be optimal for the all-manual, all-the-time shooter, it’s more than adequate for the average photographer who will use the lens in AF mode 99.5 percent of the time. Having internal focusing does make the process smoother and if you want to use a 2x tele-converter, you can manually focus Tamron’s 18-270mm F/3.5-6.3 without a lot of drama.
On my first road trip, I went to Prospect, Colorado, a unique community in Boulder County, for a great lunch as well as a place to photograph interesting architecture. Since weather during the time I had the lens was quite unpredictable, I found that using the lens’ VC feature made shooting an automatic (AEB) three-stop bracket for future HDR processing ensured that all three shots would align perfectly—without a tripod. Tip: I also put the camera in Continuous mode so it would fire a quick three-shot burst, making it easier to hold the camera steady enough to keep all three image files in register.
Shooting the Tamron AF18-270mm F/3.5-6.3 Di II VC PZD was a delight. Its compact size, wide zoom range, and more or less affordable price ($649) make it an ideal travel photography lens. The images produced were consistently sharp, even when shot under marginal lighting conditions. When combined with Tamron’s 11-18mm F/4.5-5.6 lens (now replaced by the internal focusing SP 10-24mm F/3.5-4.5 Di II LD Aspherical) they would make a fabulous two-lens kit for travel photography. Toss in a 2x extender for the 18-270mm F/3.5-6.3 with all the previously mentioned caveats and “Bob’s your uncle.”
Tamron AF18-270mm F/3.5-6.3 Di II VC PZD
Lens Construction (Groups/Elements): 13/16
Angle Of View: 75˚33’-5˚55’ (APS-C size equivalent)
Diaphragm Blade Number: Seven
Minimum Aperture: f/22~f/40 (18-270mm)
Minimum Focus Distance: 19.3” (over entire zoom range)
Macro Magnification Ratio: 1:3.8
Filter Diameter: 62mm
Weight: 15.9 oz
Entire Length: 3.8”
Accessory: Flower-shaped lens hood
Mount: Canon, Nikon with built-in motor, Sony
For more information, contact Tamron USA, Inc. at: www.tamron-usa.com.
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