Home / canon ef 70 Canon Ef 70 15/06/2022 Note: The Canon EF 70-200mm f/2.8L IS II USM Lens has been replaced by the Canon EF 70-200mm f/2.8L IS III USM Lens.Bạn đang xem: Canon ef 70 The Canon EF 70-200mm f/2.8L IS II USM Lens delivers impressive image quality, focuses accurately very fast & has top-of-the-line build quality, 4-stop Image Stabilization,weather sealing and a very useful focal length range.This is now my favorite and one of my most-used lenses.Actually, I have many favorite lenses, but overall, the 70-200 f/2.8 II is now my most-favorite - a status the predecessor to lớn this lens,the Canon EF 70-200mm f/2.8L IS USM Lens (version 1) held prior to this review.I was happy with the original 70-200 f/2.8L IS, but a new version of a lens usually brings improvements of significance - otherwise, it would not be developed in the first place.One of the first hints of the version II"s improvements came from Canon"s theoretical MTF charts.The higher the lines in a Canon MTF chart, the better the lens can be expected lớn perform optically.The Canon MTF chart comparison below shows an expected noticeable wide open aperture image quality improvement in the new lens. IS I | IS II | non-ISThe MSRP was another high unique indicator.The Canon EF 70-200mm f/2.8L IS II USM Lens" real world image chất lượng and image quality improvement over the original version are impressive - much better than I expected.The 70-200 f/2.8 IS II is very sharp wide open from the center of the image circle right into full frame corners at all focal lengths.Of the three copies I evaluated, the second traded some 200mm image chất lượng for slightly improved 70mm image quality.The with-extender tests at 280mm and 400mm confirm this of course.Feedback from others is that the "sample 2" lens is indeed an outlier - but still very good.Contrast is especially impressive from all three lenses - a noticeable improvement over the version 1 lens.Stopping down increases sharpness only very slightly.More noticeable from stopping down is the clearing of a small amount of vignetting in the corners.A small amount of vignetting is visible in full frame corners with a wide xuất hiện aperture và is most noticeable at 200mm (just over 1.5 stops).At f/4, vignetting is essentially un-noticeable except at 200mm where another stop of aperture reduction continues khổng lồ reduce the light fall off.The 70-200 II"s vignetting results show a slight improvement in the wide và mid-focal length range compared to lớn the 70-200 I,but the strongest vignetting focal length, 200mm, shows similar corner darkening.The 70-200 II"s 200mm vignetting results are similar to lớn or better than the other available-at-review-time 70-200mm lenses including theSigma 70-200mm f/2.8 EX DG HSM II Macro Lens andTamron 70-200mm f/2.8 Di Macro Lens.CA (Chromatic Aberration) is practically non-existent in the 70-200 f/2.8L IS II -which is a small improvement over the version one lens that shows a small amount of CA in full frame 200mm corners.This lens shows distortion characteristics very similar khổng lồ the original 70-200 f/2.8 IS lens.Relatively minor barrel distortion at 70mm is neutralized by around 90-95mm.The transition khổng lồ relatively minor pincushion distortion continues through 200mm.With a rounded 8-blade aperture, the 70-200 f/2.8L IS II delivers bokeh (foreground/background blur quality) very similar khổng lồ the original 70-200 f/2.8 IS,which was very good in this respect.With an f/2.8 maximum aperture over the entire telephoto focal length range, this lens is able to lớn create a strongly blurred background - & provides a bright viewfinder.Xem thêm: Đổi Viết Hoa Thành Viết Thường Trong Excel Cực Đơn Giản, Cách Đổi Chữ Hoa Sang Chữ Thường Trong ExcelThe 70-200 f/2.8L IS II is not flare-free, but the big story is the improvement over the original 70-200 f/2.8 IS in this category.Flare is easier to show than describe, so let"s look at a comparison.These images were shot with an EOS 5D Mark II in Av mode.The sky was clear & the perfect flare source, the sun, is in the corner of each frame.Note that, lớn reduce page load time (especially for điện thoại users), this comparison is being hosted on a separate page. Click on the image below to xuất hiện this comparison in a new window/tab. Use Alt-Tab/Ctrl-Tab lớn toggle back and forth.Susceptibility to lớn flare was a weakness of the Canon EF 70-200mm f/2.8L IS USM Lens.The 70-200 f/2.8L IS II gives us a nice flare performance improvement - It will deliver better image unique in a back-lit environment.I kinda like the original 70mm narrow aperture flare art effects though.While reviewing lens comparisons ... You can view animage unique comparisonbetween the three new Canon EF 70-200mm f/2.8L IS II USM Lenses I tested and the first version 70-200 f/2.8 IS lenses using the ISO 12233 Chart Comparison Tool.Especially lưu ý the darkness of the black details when comparing the two 70-200 L IS lens versions.Several other 70-200mm lenses (including the also-impressive Canon EF 70-200mm f/4.0L IS USM Lens)and all other Canon lenses are available for comparison using this tool.Up for comparison next is a distant outdoor scene.Shooting an accurate studio image unique comparison is not easy, but doing this outside is even harder.The wind must be calm and/or the target must be immoveable (to prevent subject motion blur).A clear sky and a high sun are required so that scene lighting remains as close to even as possible (including light color) during the shoot.Unfortunately, a high sun & a distant target mean heat waves will địa chỉ cửa hàng distortion to lớn the image.Still, using discernment, the results can show image chất lượng differences.The AWB (Auto white Balance), Standard Picture Style, sharpness = 1 (very low), equalized exposures below were shot tripod-mounted using the lens tripod ring -which I obviously did not get identically rotationally-aligned between lenses.We have the US Government"s Cash for Clunkers program lớn thank for today"s local recycling center comparison subjects.I usually show mid-to-corner of the frame image unique comparisons in reviews as this is where the biggest difference between lenses is usually seen.In this case, I"m showing a just-above-and-left-of-center crop as the difference in contrast between the old & new 70-200 f/2.8 IS lensesis very noticeable in the center of the frame - & sharpness differences are actually less noticeable in the corners.Use the liên kết below the thử nghiệm image to select the image lớn be shown.Ignore differences causes by atmospheric distortion/warping.Again, this comparison is being hosted on a separate page to improve page load time – just click on the image below.Again, I"m impressed with the improved contrast of the version II lens.I know - 135mm results are missing. Even though I shot that focal length multiple times, I was not confident that the version I lens was perfectly focused at 135mm, so they are excluded.The 135mm results mirror the 100mm results.I have shot several indoor, low light events with the 70-200 f/2.8 II IS using the f/2.8 aperture exclusively & consider the wide open results remarkable.I"m impressed.I love image stabilization.It clearly helps in obtaining a sharp image with a handheld camera.The links on the left (below picture) shows your image with IS turned on.The link on the right shows your image with IS turned off.While the IS-Off image may have a little artistic value in someone"s eyes, the IS On image is what I am usually looking for.