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The Tamron 70-300mm f/4-5.6 Di VC USD Lens features a popular & useful focal length range, a nice design, USD (Ultrasonic Silent Drive) AF và VC (Vibration Compensation) for a very affordable price.
Riding above the typical 18-55mm focal length range found in kit và general purpose lenses, the 70-300mm (or similar) focal length range is extremely popular -easily covering the range I typically recommend lớn someone interested in a second lens.Note: I don"t consider the gap between 55mm and 70mm to lớn be significant.Here is an example of what the 70-300mm focal length range looks like on a full frame DSLR (a Canon EOS-1Ds Mark III was used for these samples).
70mm | 100mm | 135mm | 200mm | 300mm
With an effective angle of view similar khổng lồ a 112-480mm lens on a full frame DSLR,APS-C sensor format DSLRs will frame the scene even tighter with the Tamron 70-300 VC mounted.Either way, the difference between 70mm and 300mm is very obvious.And the overall range is very useful.
Generating a list of uses for a 70-300mm lens is a daunting task (it includes family life, vacations, landscapes, travel, wildlife),but the relatively narrow aperture typically found in this class of lens removes low light action from its uses list.Also typical for a lens of this class is that the Tamron 70-300mm f/4-5.6 Di VC USD Lens has a variable max aperture.At 70mm, f/4 is available, but at 300mm, f/5.6 is the widest aperture available - a 1 stop difference - allowing 50% as much light to lớn reach the sensor.Here is a comparison of the aperture step down between the Tamron and some Canon telephoto lens models.
Model | f/4.0 | f/4.5 | f/5.0 | f/5.6 |
Canon EF-S 55-250mm f/4-5.6 IS II Lens | 55-73mm | 74-95mm | 96-153mm | 154-250mm |
Canon EF 70-300mm f/4-5.6 IS L USM Lens | 70-103mm | 104-154mm | 155-228mm | 229-300mm |
Tamron 70-300mm f/4-5.6 Di VC Lens | 70-103mm | 104-160mm | 161-217mm | 218-300mm |
Canon EF 70-300mm f/4-5.6 IS USM Lens | 70-84mm | 85-134mm | 135-224mm | 225-300mm |
Canon EF 70-300mm f/4.5-5.6 vì IS USM Lens | 70-94mm | 95-184mm | 185-300mm | |
Canon EF 75-300mm f/4-5.6 III USM Lens | 75-94mm | 95-139mm | 140-239mm | 240-300mm |
Canon EF 100-400mm f/4.5-5.6 L IS USM Lens | 100-129mm | 130-259mm | 260-400mm |
Aside from being narrow at the long end, the 70-300"s variable max aperture means that manual exposures utilizinga wide mở cửa aperture will not stay consistent over the focal length range.Again, this attribute is shared by all lenses in this class.
The Tamron 70-300mm f/4-5.6 Di VC USD Lens features Tamron"s Vibration Compensation công nghệ (the VC in the name), promising 4-stops of camera shake assistance.The VC on this lens causes the image in the viewfinder to jump when it activates.An easily audible (though not loud) click is heard when the stabilization initiates and again when it terminates.A quiet whirring can be heard while stabilization is active.
In good kiểm tra conditions (concrete floor, indoors), I am getting a reasonable 70mm keeper rate at shutter speeds as slow as 1/10 và a not-too-bad rate at 1/8.This is about 2-2/3 stops of assistance realized.At 300mm, I am getting a strong keeper rate with shutter speeds as slow as 1/25 and still reasonable rates at 1/20 - which is about 4 stops of assistance.As usual, a low percentage of sharp images can be captured at even longer exposure durations - as low as 1/10 at 300mm.
I find image stabilization to be incredibly useful.Besides allowing sharp handheld shots to lớn be captured at shutter speeds longer than needed without stabilization, image stabilization makes perfect framing much easier.Especially at 300mm, a motionless viewfinder is extremely helpful in this regard.
For its low price, the Tamron 70-300mm f/4-5.6 Di VC USD Lens delivers rather impressive overall image quality.At 70mm with a wide xuất hiện aperture, the 70-300 VC has decent sharpness right into full frame corners (the bottom corners show slight softness)and shows little improvement when stopped down (narrower aperture).
Center of the lens image chất lượng slowly degrades through 200mm - remaining usable.Stopping down provides only slight improvement in center of the lens sharpness.Corner performance worsens by 100mm but then holds through 200mm - remaining reasonable.Again, stopping down provides only slight improvement in sharpness.
By 300mm, this lens delivers poor image chất lượng across the frame (except on the far left side of the frame).Stopping down at 300mm helps, but even f/11 image unique is only marginal.If you consider this a 70-200mm lens, you will be more happy than if you are counting on getting great 300mm image quality.
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Full frame sensor format DSLR users should expect lớn see between 1.5 và just over 2 stops of vignetting in the corners.This will be noticeable in certain shots - such as when an evenly-blue sky is in the corner of a frame.APS-C (1.6x FOVCF) body users will not likely notice any vignetting except perhaps in the 300mm corners.As usual, a narrower aperture resolves any vignetting issues.
CA is very well controlled in the Tamron 70-300 VC, with only a small amount of CA apparent in full frame corners.Slightly more CA is visible in the left side of the frame than the right.
The 70-300 VC will show some flare if a bright light is in the frame, but the amount of flare is not unusual.
Slight barrel distortion at 70mm quickly changes to modest pincushion distortion at 100mm.Pincushion distortion increases over the focal length range until becoming moderately strong at 300mm.
The bokeh (quality of background blur) delivered from the Tamron 70-300mm f/4-5.6 Di VC USD Lens" 9 aperture blades is not the best.Even though this lens does not have a wide aperture, the relatively long 300mm focal length is still able to create anice amount of background blur with a relatively close subject.
The Tamron 70-300mm f/4-5.6 Di VC USD Lens incorporates Tamron"s first implementation of "USD" or Ultrasonic Silent Drive.My first thought is that the words Ultrasonic & Silent are redundant as far as humans are concerned, but ... The lens does focus quietly (though not completely "silent").The 70-300 VC"s focus speed is not especially fast.
Combining a somewhat slow AF tốc độ with a relatively narrow aperture means that this lens is not the best choice for sports photography.The Tamron 70-300 VC will work best in this regard when shooting a subject that remains a near-constant distance from the camera under a healthy cấp độ of daylight.
Much more problematic is the inconsistent focus accuracy I"m experiencing from the Tamron 70-300 VC.I had lớn spend a more-than-usual amount of time focus testing this lens - just lớn confirm what I was seeing.And my determination is that my Tamron 70-300mm f/4-5.6 Di VC Lens (purchased retail) is very inconsistent in the focus accuracy department.
I have used the 70-300 VC on multiple Canon EOS-1Ds Mark III bodies & on aCanon EOS 60D with similar results.Some shots are focused accurately while backfocusing occurs as frequently as frontfocusing.With their deeper DOF (Depth of Field) with identical framing, APS-C camera bodies will not show the focus errors as readily as full frame bodies.
The bottom line is that even a sharp lens does not deliver sharp subjects if not focused accurately.Focus accuracy issues were realized in the field - & they made evaluating VC difficult as I had lớn discern whether the cause of blurred shots was mis-focusing or camera shake.
The Tamron 70-300mm f/4-5.6 Di VC USD Lens focuses internally and has FTM - manual focus is always available and the focus ring does not turn during autofocus.Filters attached khổng lồ this lens will not rotate with focus changes.
The focus ring is very nice - smooth, no play & a nice amount of rotation (160°).Focus breathing (image changes kích cỡ when focusing) is noticeable at the wide end, but far less apparent lớn me at 300mm.The mechanics of the focus system appear lớn be of good quality.
Model | MFD | MM | |
Canon EF-S 55-250mm f/4-5.6 IS II Lens | 43.3" | (1100mm) | .17x |
Canon EF 70-200mm f/4.0 L USM Lens | 47.2" | (1200mm) | .21x |
Canon EF 70-200mm f/4.0 L IS USM Lens | 47.2" | (1200mm) | .21x |
Canon EF 70-200mm f/2.8 L USM Lens | 59.1" | (1500mm) | .13x |
Tamron 70-200mm f/2.8 Di Macro Lens | 37.4" | (950mm) | .32x |
Canon EF 70-200mm f/2.8 L IS II USM Lens | 47.2" | (1200mm) | .21x |
Canon EF 70-300mm f/4-5.6 IS L USM Lens | 47.2" | (1200mm) | .21x |
Tamron 70-300mm f/4-5.6 Di VC Lens | 55.1" | (1400mm) | .25x |
Canon EF 70-300mm f/4-5.6 IS USM Lens | 59.1" | (1500mm) | .25x |
Canon EF 70-300mm f/4.5-5.6 do IS USM Lens | 55.1" | (1400mm) | .25x |
Canon EF 75-300mm f/4-5.6 III USM Lens | 59.1" | (1500mm) | .25x |
Canon EF 100-400mm f/4.5-5.6 L IS USM Lens | 70.9" | (1800mm) | .20x |
The Tamron 70-300 VC"s minimum focusing distance is very reasonable for a telephoto zoom lensand the resulting about-as-good-as-it-gets maximum magnification of .25x reflects this.Extension tubes will increase the maximum magnification somewhat.The 70-300 VC is not compatible with extenders.