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Tamron AF 28-75mm f/2.8 SP XR Di LD Aspherical (IF) for Canon Digital SLR Cameras by Tamron
Digital product summary informationManufacturer: Tamron Model: 28-75mm Canon Color: black Product features: - 28-75mm autofocus zoom lens with f/2.8 maximum aperture
- Designed to meet performance characteristics of digital SLR cameras
- Minimum focusing distance of 13 inches; rotation-type zoom
- Smaller and lighter than most fast zoom lenses; weighs 18 ounces
- Measures 2.9 inches in diameter and 3.6 inches long; 6-year warranty
Accessories:
Digital camera reviews of Tamron AF 28-75mm f/2.8 SP XR Di LD Aspherical (IF) for Canon Digital SLR CamerasDigital camera Review: 20D, 30D, RebelXT (350D) owners: beware of lens swapping! Summary: 3 Stars
I don't know about you, but I don't want to lose important photo opportunities while changing lenses - yes, resolution and detail are a must, and I'm quite sure this one packs great quality in a affordable package, but the reason people use zooms instead of primes is basically avoiding lens swapping in the first place - along with price as well (1 zoom vs 2 or 3 primes), so if you are shopping for a walk-around zoom lens, I believe you want to avoid as much as possible the stressing and often risky lens swapping. Considering a study I did I believe you'll be swapping lenses a lot with this one, since it is so long in a 1.6 FOV body. It becomes a 44.8mm lens, for Christ sake, a NORMAL lens! If I made you curious, keep on reading.
My research:
I have analysed the EXIF tags of all the pictures I took with my point-and-shoot Powershot A520 in certain days. It has a great range (35 to 140mm equiv). I have considered ONLY albums that were about travels or strolling around, no toddler parties were analysed. Boat rides, travels and sightseeing in general only. I made a frequency analysis of the lenses I used for every shot, and lately I compared with the ranges possible of many lenses in the market.
These are the percents of photographs taken with each lens (converted to 35mm equiv) range:
35mm - 41,7%
47mm - 7,0%
59mm - 4,0%
71mm - 10,0%
83mm - 13,0%
96mm - 4,0%
112mm - 11,0%
140mm - 44,0%
Now, these are the percentages of the shots taken I could do with each of these lenses on a 1.6 FOV cropped sensor camera. Here are my findings:
Canon EF-S 17-55mm (kit lens) (74.6%)
Canon EF-S 17-85mm f/4-5.6 (100%)
Tamron SP AF17-50mm F/2.8 XR (74.6%)
Canon EF 17-40mm f/4L USM (63%)
Canon EF 17-55mm f/2,8L IS USM (74.6%)
Sigma 17-70mm f/2.8-4.5 (82.1%)
Canon EF 24-70mm f/2.8L (82.1%)
Tamron SP AF 24-135mm f/3.5-5.6 (100%)
Canon EF 24-85mm f 3,5-4,5 USM (100%)
Canon EF 28-105mm f/3.5-4.5 II USM (58.3%)
*** Tamron AF 28-75mm f2.8 (40.4%)
Sigma 24-60mm f/2.8 (65.8%)
Cosina 19-35mm f/3.5-4.5 (63.0%)
(I considered 319 shots in my research, should you be willing to do the math. To be fair, I considered 38.4mm to be close enough to 35mm, hence the good results of 24mm+ lenses).
As you can see, should you believe my research, the 28-75mm had one of the worst coverage-based hit ratios on a 1.6 FOV crop (for the considered lenses). Barely 40%. Even the considerably short Canon EF 17-40mm f/4L USM scored a 63%. Indeed 40% means a lot of lens swapping. BTW, in a full-frame camera (film SLRs included) the story is another one completely. The 28-75 coverage leaps to 68.3% of the shots. I personally wouldn't consider anything far from 70%.
There is a reason Canon packs a 17-55mm zoom with their cameras, though a soft one: it's a pretty commonly used range, as 74.6% of my shots would be covered by that lens.
Have I ever used a ~50mm as a walk-around lens on a SLR? Definitely, and for a long time. My opinion? It was a real pain. Never wide enough indoors (ever been to a crowded restaurant during a stroll around?), never wide enough for group shots (picture yourself inside a trolley car, trying to photograph your friends, as I did once. Wrong lens). Never the creative options even a modest 35mm wide-angle would give you. My idea? You don't want to loose the 35mm range in your everyday lens. It is a great loss.
My advice? Study another alternative, such as Tamron's highly praised SP AF17-50mm F/2.8 XR (scored a very fine 74,6%, and has the juicy 2.8 aperture as well). Or at least consider a lens that starts at 24mm. These extra 4mm become 7mm wide, and that's a great difference. A 38.4mm wide angle is no big deal, but close enough to 35mm, and in my opinion a world apart from 44.8mm.
Summary of Tamron AF 28-75mm f/2.8 SP XR Di LD Aspherical (IF) for Canon Digital SLR CamerasSO) 28-75MM F2.8 XR DI F/CANON
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