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EF-S 55-250mm F4-5.6 IS II

Mã sản phẩm : EF-S 55-250mm
Giá : 3.300.000 VNđ

 Bảo hành 12 tháng

 Lens Canon EF-S 55-250mm F4-5.6 IS, 1 trong những loại len Tele chống rung rất hiệu quả, kích thước gọn nhẹ

-Cho chất ảnh có độ nét tốt khi zoom ảnh ở tiêu cự 250mm (trong điều kiện ánh sáng tốt)


   


Official Name:
Canon EF-S 55-250mm f/4-5.6 IS

Focal Length Markings:
55, 70, 100, 135, 200 and 250mm

Features:
EF-S – Only compatible with cropped sensor DSLR. You should not use this lens with a full frame DSLR camera or film SLR.

IS – Image Stabilization feature to prevent picture blurriness caused by handshake. Effective up to 4 stops.

Full Technical Specs (from Canon’s website):

Technical Specifications
Groups / Elements 10 / 12
Angle of View 27°50′ – 6°15′
Number of Blade Diaphragm 7
Minimum Aperture f/22-32
Minimum Focusing Distance 1.1m
Filter Thread 58mm
Weight 390g
Dimension (Diameter x Length) ø70 x 108mm
Macro Magnification Ratio 0.31X
Available at Amazoncanon 55-250 review, B&H Photo, Adorama

Optical Performance

Back to: MenuIntroduction

Canon 55-250 Review – Sharpness

Center sharpness is excellent throughout the zoom range. Border sharpness is also great across the zoom range.

To get the maximum sharpness from this lens, shoot at f/8.

Sharpness Scale (from Best to Worst):
(5) Excellent
(4) Great
(3) Good
(2) Fair
(1) Poor

Center Sharpness

Focal Length / Aperture f/4 f/5.6 f/8 f/11
55mm Excellent Excellent Excellent Excellent
135mm n/a Great Excellent Great
200mm n/a Great Excellent Great
250mm n/a Great Excellent Great

Border Sharpness

Focal Length / Aperture f/4 f/5.6 f/8 f/11
55mm Great Great Great Great
135mm n/a Great Great Great
200mm n/a Great Great Great
250mm n/a Great Great Great

Distortion

There is a very minor barrel distortion at 55mm and slight pincushion at other focal length.

However, it is not noticeable and can be safely ignored or corrected easily during post processing.

See the distortion test chart result below.

Vignetting

Vignetting is only apparent at the largest aperture at any focal length (which is typical for an EF-S lens).

Stop down to the optimal aperture of f/8 and vignetting will be completely gone.

See my vignetting test result below.

Chromatic Aberration

Chromatic aberration is extremely well controlled on this lens. It is negligible at any aperture at any focal length.

Chromatic Aberration Scale (from Best to Worst):
(5) Negligible
(4) Very Low
(3) Low
(2) High
(1) Very High

Chromatic Aberration

Focal Length / Aperture f/4 f/5.6 f/8 f/11
55mm Negligible Negligible Negligible Negligible
135mm n/a Negligible Negligible Negligible
200mm n/a Negligible Negligible Negligible
250mm n/a Negligible Negligible Negligible

Build Quality

 

Canon 55-250mm f/4-5.6 EF-S IS Materials

Good quality solid Plastic, Made in Japan.

Zoom Ring

The zoom ring feels very smooth and responsive.

Focusing

Autofocus speed is fast, accurate and silent.

It has manual focus option. The front element does rotate during autofocus so it will be hard to use a polarizing filter (but who would with this lens?).

Image Stabilization

The Image Stabilization works great. It is effective up to 4 f-stops.


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