Đánh giá samyang 85mm f1.4 sony năm 2024
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Đây là ống kính 85mm f/1.4 lấy nét AF của Samyang - một hãng tại Hàn Quốc, nói từ đầu điều này vì trước đây Samyang đã làm ống tiêu cự này nhưng lấy nét thủ công MF. Mình có ống này với ngàm EF cho Canon Fullframe. Ở tiêu cự này thì ống Samyang 85mm f/1.4 được đánh giá điểm ưu nhiều so với các tiêu cự góc rộng, và với ống chính hãng thì hàng Samyang rẻ hơn nhiều. Dĩ nhiên là giá cả phục vụ nhu cầu ít tiền nhưng lại muốn công nghệ tráng phủ, khẩu lớn... thì ngược lại độ bền cơ khí, giữ được độ chính xác đường dài là câu chuyện khác. Show Thông số kỹ thuật của Samyang AF 85mm /1.4 EF:
Về kích thước ống kính này, phải nói ngay là Samyang muốn người dùng linh hoạt hơn với sự nhỏ gọn so với các hiệu khác cùng tiêu cự này. So với ống Canon 85mm f/1.4L IS hay Sigma 85mm f/1.4 ART thì của Samyang bé hơn thấy rõ. Nhưng cũng hy vọng giảm kích thước mà không giảm chất lượng Trên tay thì thấy Samyang tráng phủ đa lớp cho bề mặt thấu kính trước, nhằm tăng độ sắc nét, giảm hiện tượng flare và bóng ma. Trước đây, ống MF tiêu cự này của Samyang bị đánh giá là độ sắc nét không đồng nhất từ tâm ra biên quá nhiều. Un-even-sharpness thực sự thì ống nào cũng có, càng gần tâm thì độ nét càng cao, nhưng hiện tượng mờ vùng càng xa tâm gần rìa ảnh ấy ít hay nhiều thôi, tùy thuộc công nghệ quang học của mỗi hãng sản xuất. Tiền nào của đó là vậy. Samyang đã rất cố gắng nâng cấp chất lượng cho ống kính tiêu cự thông dụng này của họ. Về chống flare lóa sáng, ngoài ý đồ nghệ thuật hay gì đó, thì hiện tượng này làm mất chi tiết và đôi khi phá vỡ cấu trúc bố cục hình ảnh, nên việc tráng phủ lớp coating công nghệ mới là cần thiết. Hy vọng sắp tới trải nghiệm thực tế, ảnh thu được từ ống này sẽ có kết quả tốt như mong muốn. Ống kính khẩu càng lớn thì độ sắc nét chính xác càng khó làm, tương tự ở khẩu lớn, viền đen 4 góc khi mở tối đa rất dễ xuất hiện. Về sự lo lắng này, Samyang cho biết lớp tráng phủ đa lớp ngoài việc xử lý bóng ma, còn giảm thiểu các tia sáng phản chiếu tác động đến các tia sáng khác khi đi qua ống kính vào bề mặt cảm biến, tái tạo hình ảnh có màu sắc tốt hơn. Về cơ chế vật lý của vòng xoay lấy nét, Samyang sử dụng motor siêu âm kép, viết tắt là LSM (Linear Supersonic Motor), phản ứng hoạt động nét nhanh, chính xác và yên lặng - điều mà người quay video rất cần, vì tiếng động của vòng xoay ống kính rất nhạy với mic ghi âm khi quay video. Cấu trúc (Build quality) cảm giác không xịn, vòng xoay nét bằng nhựa, độ bền cơ học cần đánh giá qua thời gian sử dụng. Cảm giác cầm nắm một ống kính đầm tay cùng chất liệu phủ ngoài và chất liệu rất dễ cảm nhận là loại xịn hay ít xịn là một trải nghiệm thực tế. Độ bền cơ khí thì thực sự chưa biết qua thời gian ra sao, nhưng chúng ta cũng phải xác định với nhau dòng Samyang là dòng thay thế cho lựa chọn nhu cầu cùng tiêu cự, khẩu độ và đáp ứng người dùng có chi phí phải chăng. Today we are taking a look at a fast portrait lens – the Samyang AF 85mm F1.4 FE II a second version of the company’s lens comparing it to both the Sigma and Sony counterparts. Second-generation fast portrait lensAnnounced in mid-2022 the Samyang second-generation full-frame 85mm f/1.4 E-mount lens is smaller and lighter than the first generation and includes several design improvements including weather sealing and new controls as well as an improved AF motor. Samyang AF 85mm F1.4 FE II on the Sony A7R V Optical DesignThe lens includes 11 elements in 8 groups with 4 HR elements and 1 ED element. MaterialsThe lens feels nice in the hand with a combination of aluminum and hard plastics and the lens feels pretty light. Size and weightThe lens is about 11 cm long (just over 4″) and is indeed pretty lightweight at around 540 grams (around 19oz). RingsThe lens has a single wide ring which can be used for focus or to control the lens aperture (more on this in a moment). The ring has a nice grippy texture and it turns fairly smoothly although not as smoothly as that of the Sony or Sigma lenses that we shall discuss later on. Buttons and switchesAs with most recent Samyang lenses, the new 85mm has a focus hold button (which can be set via the camera) and a custom switch with two modes. As we noted in previous Samyang reviews, these modes can be set via the Samyang docking station and software to change between manual focus and AF or aperture control (we choose the first option but we actually prefer the Sony way of doing things with a simple AF/MF switch and an actual aperture ring). SealingAccording to Samyang, the lens has weather-sealing in no less than 7 places. MountThe lens currently only comes in a FF E-mount version. HoodWith the included plastic hood, the lens is about 16cm long (6″). ApertureThe lens includes 9 rounded blades (we will see later how this affects the bokeh of the lens). FilterThe lens can accept 72mm filters. PerformanceFocusingWe tested the Samyang as well as the 85mm f/1.4 Sony and Sigma lenses in a series of AF tests shooting both stills and videos. Trying to shoot a fast-moving target in changing lighting conditions with our Sony A1 proved pretty challenging for all three lenses with pretty low success rates. The Sigma faired a little better than the older Sony and the Samyang came last in this test (in focus/total images taken)
We also tested the lenses in video mode. The Sony and Sigma performed well, and the Samyang performed OK although it did hunt once and this is in tune with our previous experience with the lens (we have been using it for many of the recent LensVid A-rolls and it typically performed well but hunts on occasion, something that we did not encounter with our Sigma 85mm lens). It is also worth mentioning that out of the 3 the Sony had by far the nosiest AF motor, another sign of its age and we expect Sony to come up with a new version pretty soon. We also tested focus throw on all three lenses. Regretfully all three lenses do not have a linear focus mechanism. Sony seems to claim that the GM has a Linear Super Sonic wave Motor. In our testing, it is much better than the Sigma and Samyang in this respect it is now 100% Linear which means that if you focus faster/slower your focus will move more/less. This might be good for stills but it’s far from ideal for video work. It’s also worth noting that the Samyang focus ring is not quite as smooth as that of the Sony or Samyang (it’s not a huge deal in our opinion but you do feel the difference when you compare the lenses side by side). All three lenses (Sony on the left, Samyang in the center, and Sigma on the right) Image stabilizationAll three lenses do not have image stabilization. So far only Tamron and Canon offer fast stabilized 85mm lenses. SharpnessWe tested the sharpness of all three lenses using our special large professional Imatest high-end chart on our Sony A1. In the center of the frame, the Samyang is fairly sharp wide open with a visible improvement between f/2 and f/2.8. Surprisingly the corners look very good wide open although extremely dark. Samyang AF 85mm F1.4 FE II sharpness test center – top left f/1.4, top right f/2, bottom left f/2.8, bottom right f/4 Samyang AF 85mm F1.4 FE II sharpness test corner – top left f/1.4, top right f/2, bottom left f/2.8, bottom right f/4 The Sigma might be a tad sharper in the center wide open but significantly less so in the corners. Sigma 85mm f/1.4 DG DN Art sharpness center test – top left f/1.4, top right f/2, bottom left f/2.8, bottom right f/4 Sigma 85mm f/1.4 DG DN Art sharpness corner test – top left f/1.4, top right f/2, bottom left f/2.8, bottom right f/4 Sony 85mm f/1.4 GM sharpness center test – top left f/1.4, top right f/2, bottom left f/2.8, bottom right f/4 Sony 85mm f/1.4 GM sharpness corner test – top left f/1.4, top right f/2, bottom left f/2.8, bottom right f/4 The Sony is possibly the sharpest of the three both in the center and corners wide open although compared to the Samyang the difference is not huge. Close up performanceWhile none of the three lenses is even remotely close to a macro lens the Sony has a somewhat close focusing distance of 80cm compared to 85cm for both the Sigma and Samyang. The Sony also has a slightly better maximum magnification of 1:7.6 vs. 1:8.3 and 1:8.4 for the Samyang and Sigma respectively. When it comes to close-up sharpness, none of the 3 lenses is a particularly sharp wide-open close up, however closing down to f/2 makes improves center sharpness significantly on all three with the Sony ranking first, the Sigma slightly behind it and the Samyang in close third position. Samyang AF 85mm F1.4 FE II close up test – top left f/1.4, top right f/2, bottom left f/2.8, bottom right f/4 Sigma 85mm f/1.4 DG DN Art close up test – top left f/1.4, top right f/2, bottom left f/2.8, bottom right f/4 Sony 85mm f/1.4 GM close up test – top left f/1.4, top right f/2, bottom left f/2.8, bottom right f/4 BreathingBoth the Samyang and Sigma have a ton of breathing in our testing. The Sony, on the other hand, has a relatively small amount of breathing and if you are using a camera with breathing compensation like the A7R V for example, the Sony has practically zero breathing (see a test in the video above). Chromatic aberrationsOut of the 3 lenses that we tested and with the lens compensation turned off the Sigma seems to have the least amount of longitudinal chromatic aberrations with the Sony and Samyang just slightly behind (although CA seems very minor on all 3 lenses). Samyang AF 85mm F1.4 FE II CA test – top left f/1.4, top right f/2, bottom left f/2.8, bottom right f/4 Sigma 85mm f/1.4 DG DN Art CA test – top left f/1.4, top right f/2, bottom left f/2.8, bottom right f/4 Sony 85mm f/1.4 GM CA test – top left f/1.4, top right f/2, bottom left f/2.8, bottom right f/4 FlareThe Samyang seems to have significantly more flare compared to the Sigma and the Sony in our testing (see in our video above). VignetteWhile all three lenses have a lot of vignette wide open with lens compensation turned off on the camera. The Samyang cleans up very nicely between f/2.8 and f/4 and looks significantly cleaner compared to the Sigma and even a little better than the Sony at f/4. Samyang AF 85mm F1.4 FE II vignette test – top left f/1.4, top right f/2, bottom left f/2.8, bottom right f/4 Sigma 85mm f/1.4 DG DN Art vignette test – top left f/1.4, top right f/2, bottom left f/2.8, bottom right f/4 Sony 85mm f/1.4 GM vignette test – top left f/1.4, top right f/2, bottom left f/2.8, bottom right f/4 Barrel distortionIn our test with lens compensation turned off, the Sigma seems to show a huge amount of pincushion distortion while the Samyang and Sony seem to display a slight unevenness on the left side of the frame. Samyang AF 85mm F1.4 FE II Sigma 85mm f/1.4 DG DN Art Sony 85mm f/1.4 GM BokehThe Samyang has fairly large clear bokeh, especially around f/2 but it’s far from being round even at the center of the frame. Samyang AF 85mm F1.4 FE II bokeh test – top left f/1.4, top right f/2, bottom left f/2.8, bottom right f/4 With the Sigma you will also be getting better results with the best bokeh at around f/2 with large, clear, and fairly round circles in near the center of the frame. Sigma 85mm f/1.4 DG DN Art bokeh test – top left f/1.4, top right f/2, bottom left f/2.8, bottom right f/4 The best is probably the Sony with large, clear, and round circles at the center around f/2. Sony 85mm f/1.4 GM bokeh test – top left f/1.4, top right f/2, bottom left f/2.8, bottom right f/4 Sample imagesWe shot with the Samyang AF 85mm f/1.4 FE II over a period of several months in 2022 using our Sony A1 and more recently with our A7R V and here are a few image samples (all images are unedited, besides cropping, unless otherwise mentioned). ConclusionSamyang’s goal with the second version of its 85mm lens was to create a lightweight, affordable fast portrait lens with all of its latest features. The lens certainly ticks all of these boxes and also provides good sharpness across the frame as well as low levels of CA and barrel distortion. Compared to the Sigma 85mm and now aging Sony 85mm GM lenses it is legs behind in most other aspects but it’s also quite a bit cheaper making it a viable option for lower budgets. Fast and sharp – Samyang AF 85mm F1.4 FE II Pricing Talking about pricing the Samyang AF 85mm F1.4 FE II currently sells for $750-800 (there are deals from time to time) while the Sigma 85mm f/1.4 typically sells for under $970 while the Sony’s current price tag is around $1800. You can check out more LensVid exclusive articles and reviews on the following link. Iddo Genuth is the founder and chief editor of LensVid.com. He has been a technology reporter working for international publications since the late 1990's and covering photography since 2009. Iddo is also a co-founder of a production company specializing in commercial food and product visual content. |
