The Canon EF 28mm f/2.8 Lens is both light in weight and light on your wallet. Measuring 2.6 x 1.7" (66 x 43mm) long and weighing 6.6 oz (186g), this lens qualifies for the tiny lens category. I found the Canon EF 28mm f/2.8 Lens to be similar to the Canon EF 24mm f/2.8 Lens and the Canon EF 35mm f/2 Lens in build quality and size. The small size is great. The build quality is not great - though acceptable to me for a lens of this stature. Lacking USM (Ultrasonic Motor), the 28 f/2.8 is mediocre in focusing speed and very high in noise level. Autofocusing is definitely audible but the speed is adequate for many applications. FTM (Full Time Manual) focusing is not a feature in this lens and manual focusing in MF mode is challenging. The focus ring is very small and has lots of play in it. The 28 f/2.8's MFD (Minimum Focus Distance) is close - 12" (305mm), but not for a wide angle lens. MM (Maximum Magnification) is a near-the-bottom .13x. Like the Canon EF 35mm f/2 Lens, the Canon EF 28mm f/2.8 Lens has a 5-blade aperture that yields pentagram-shaped out-of-focus highlights when the lens is stopped down. The result is not terrible - but is not great either. The 28 f/2.8 is sharp wide open in the center with little noticeable improvement when stopped down. Wide open corners show softness even on a 1.6 FOVCF body due to a curved plane of sharp focus. Corner sharpness is markedly improved by f/4. Light fall-off is noticeable on the corners when shot wide open even on a 1.6x FOVCF body. Full frame camera body users will still see some corner shading at f/8. The 28mm f/2.8 has noticeable CA (Chromatic Aberration) and some barrel distortion. Color and saturation are good. Canon's other current 28mm prime, the Canon EF 28mm f/1.8 USM Lens, is the most logical comparison lens. Even though smaller and less expensive, the Canon EF 28mm f/2.8 Lens nearly keeps up with the f/1.8 in sharpness. The f/1.8 obviously has wider apertures available, but even stopped down to f/2.8, the f/1.8 is not much sharper than the f/2.8 lens. The 28mm f/1.8 is sharper in the corners, but at identical apertures, these lenses are not very dissimilar. What is noticeably different is the corner shading on the 28mm f/2.8. Corner darkening is the most significant differentiator when comparing images taken with these lenses. The f/2.8 has a little more barrel distortion than the f/1.8. Of course the f/1.8 is better built and has USM AF with FTM (Full Time Manual) focusing. I regard the Canon EF 28mm f/1.8 USM Lens, as the better lens, but the better performance and build are not lost on the price.  Pictured above from left to right are the Canon EF 24mm f/2.8 Lens, Canon EF 28mm f/2.8 Lens, Canon EF 28mm f/1.8 USM Lens and the Canon 24-70mm f/2.8L USM Lens. The small size of the Canon EF 28mm f/2.8 Lens makes it a good travel lens. It certainly does not take up much room in the luggage - and does not cause a catastrophe if lost or damaged. The EF 28mm f/2.8 also makes a good second lens to carry when using one of the zooms such as one of the Canon 70-200 L Lenses as a primary lens. The 28 f/2.8 also makes a good backup lens to a more expensive primary use lens. The Canon EF 28mm f/2.8 Lens is a decent lens for the price. Bringing you this site is my full-time job (typically 60-80 hours per week). Thus, I depend solely on the commissions received from you using the links on this site to make any purchase. I am grateful for your support! - Bryan
Bác nào trong forum đã xài qua xin cho em đôi dòng đánh giá về các mặt sau: - Độ nét từ khẩu 2.0 đến 5.6 (Em ưu tiên khoảng khẩu này) - Màu sắc, viền tím này nọ - Độ méo (Cái không đáng ngại vì có Ps và body fix) - Tốc độ bắt nét (so với 85mm 1.8 nhé) - Buil (so với 85mm 1.8 luôn) Xin cảm ơn mọi người. Được sửa bởi snicker740 lúc 06:37 PM ngày 24-09-2013 -
Định hướng sẽ lấy em này đi kèm 85, rồi tết đổi body lên FF và sài tiếp cùng 2 em này. Chỉ cần chất tương đương với 85 là em ok rồi. Bác chủ phiền cho bu hỏi thêm với nhé! Một vài ý kiến: - Khó kiếm 28mm 1.8 USM mới ở thời điểm này. - Đã có 28mm 1.8 thường phát sinh 50mm 1.4 hoặc 85mm 1.8 (lại tốn tiền rồi). - Đã dùng ống L, khó quay lại ống ít tiền hơn vì thực sự chất ảnh L khác hẳn, cho dù 17-40L là F/4 nhưng cho ảnh vẫn chất hơn fix 28mm 1.8. - Máy dòng crop 1.6 của Canon, lựa chọn 17-40 L F/4 là kinh tế và ảnh có chất nhất. Được sửa bởi raiden lúc 04:58 PM ngày 25-09-2013 -Thread InformationUsers Browsing this ThreadThere are currently 1 users browsing this thread. (0 members and 1 guests) Quy định
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