canon 40 f2 8 cũ

Review – Canon EF 40 f/2.8 Pancake STM By: Justin VanLeeuwen | Twitter Discuss the Canon EF 40 f/2.8 Pancake STM. When Canon announced they were releasing a 40mm “pancake” lens I saw a lot of people raise cheers of joy and excitement. “Finally!” or “Perfect street lens!” were not uncommon sights online. But I was nonplussed. The resolution test of the Canon EF 40 mm f/2.8 STM was based on RAW files from the Canon EOS 1Ds MkIII body. In the case of that camera the decency level is situated near 30-32 lpmm and the best fixed-focus lenses can reach as high as 44-46 lpmm. Let’s glance at a graph below to see how the tested lens fares in the frame centre, on the edge Canon 40mm STM F2.8 - Ống kính Canon một tiêu cự có độ mở F2.8 phù hợp cho chụp chân dung với góc rộng 40mm. Máy ảnh JP - Uy tín lâu năm Dịch vụ chuyên nghiệp Giới thiệu máy ảnh JP Vay Tiền Cấp Tốc Online. Skip to contentTrang chủỐng kính Canon RF 70-200mm f/ IS USM Bán ống kính Canon 24-105mm f4L IS USM 98% đẹp xách tay cũ chính hãng giá rẻ nhất trên thị trường mà bạn có thể tham khảo qua và liên hệ mua. Mọi thông tin chi tiết về dòng ống kính đa dụng này sẽ được Máy Ảnh Hoàng Tô gửi đến bạn dưới đây. Canon 24-105mm f4L IS USM ngay từ lúc ra mắt đã nhận được rất nhiều sự quan tâm từ phía các nhiếp ảnh gia từ không chuyên đến chuyên nghiệp. Bởi vì sản phẩm này được sở hữu đặc tính tích hợp được nhiều dòng máy DSLR chất lượng nhất của hãng Canon. Canon 24-105mm f4L IS USM Không chỉ vậy mà dòng sản phẩm này còn mang lại rất nhiều các lợi ích thiết thực khác nhau đến cho người dùng. Và những điểm nổi bật này sẽ được gửi đến bạn trong những thông tin sau đây, hãy cùng tham khảo qua nhé. Thông số kỹ thuật của ống kính Canon 24-105mm f4 IS USM xách tay cũ Những thông số kỹ thuật cụ thể mà dòng sản phẩm này đáp ứng cho người dùng sẽ là Độ dài tiêu cự tối đa của ống kính 24-105mm f/4 Khẩu độ F/4-22 Cấu trúc ống kính 17 thấu kính và 12 nhóm Góc chéo của khung hình 84 ° – 23 ° 20 với máy ảnh full-frame Chống rung Sử dụng chống rung quang học Lấy nét Lấy nét siêu thanh USM Kích thước bộ lọc 77mm Chống bụi, chống thấm nước Có Thấu kính Super UD, ASC Những thông số này tương đối nổi trội so với các dòng ống kính cùng phân khúc của mình. Chính vì vậy nên đây là điều mà nhiều người thường hướng đến khi lựa chọn. Đặc điểm nổi bật của ống kính Canon 24-105mm f4L IS USM Dòng sản phẩm ống kính này được sở hữu rất nhiều các công nghệ tiên tiến mà hãng Canon đang triển khai. Sự đa dụng có thể giúp cho ra những sản phẩm chất lượng cao và độ ổn định tốt khi thực hiện chụp. Sử dụng công nghệ chống rung quang học IS Image Stabilisation Công nghệ chống rung quang học IS được xem như là một trong những công nghệ đa dụng giúp hạn chế được các vấn đề rung tay trong quá trình chụp nếu có. Đồng thời giảm tốc độ chụp lên đến 3 bước. Vậy nên những bức ảnh được cho ra cũng đều khắc phục được các tình trạng mờ nhòe hoặc mất nét. – Tham khảo thêm sản phẩm liên quan + Ống kính Canon Fisheye EF 15mm f/ xách tay + Ống kính Sigma 18-200 mm f/ DC OS for Canon + Ống kính Canon EF 85mm Công nghệ lấy nét siêu thanh USM Ultra Sonic Motor Khi áp dụng công nghệ lấy nét siêu thanh USM này thì tác dụng chính đó là giúp tăng tốc độ lấy nét trong trạng thái im lặng hoàn toàn. Độ chính xác khi thực hiện lấy nét được xem như chính xác hoàn toàn, mà không làm ảnh hưởng đến đối tượng chụp, nhất là những bức ảnh chụp các loài động vật ở điều kiện ngoại cảnh. Thiết kế độc đáo Canon 24-105mm f4L IS được hãng đưa ra mẫu thiết kế độc đáo, gây ấn tượng đối với bất kỳ ai khi gặp phải. Chất liệu hình thành đều là cao cấp, mang lại cảm giác chắc tay khi cầm. Đồng thời có thể chống bụi, chống nước rất tốt, điều này sẽ giúp các nhiếp ảnh gia có thể chụp trong bất kỳ môi trường nào. – Xem thêm + Ống kính Nikon 18 105 cũ + Thu mua máy chụp hình cũ Thấu kính cao cấp Chiếc ống kính này sở hữu 17 thấu kính chất lượng cao, bao gồm thấu kính thu cầu và thấu kính tán xạ cực thấp. Hầu như các hiện tượng sai sắc đều được giảm thiểu đến mức tối đa nhờ vào công nghệ UD hiện đại được tích hợp. Điều này giúp hình ảnh luôn đạt chất lượng tốt nhất. Sử dụng lớp tráng phủ Nano chất lượng Air Sphere Coating ASC sẽ giúp hạn chế đi các vấn đề liên quan đến hiện tượng bóng ma, lóe sáng trong quá trình chụp. Dù là nội hay ngoại cảnh thì tất cả chất lượng hình ảnh cho ra đều được đảm bảo. Với lớp tráng phủ ASC sẽ giúp tăng độ bền của bề mặt thấu kính một cách hiệu quả, và cũng hạn chế đi tình trạng bám bụi hoặc vết dầu vân tay. Giá thành rẻ Dù sở hữu rất nhiều những điểm nổi bật như vậy nhưng chiếc ống kính Canon 24-105mm f4L IS USM này lại có mức giá thành được đề ra không cao so với mặt bằng chung. Đối với sản phẩm mới thì khoảng 26 – 28tr vnđ, còn Canon 24-105mm f4L cũ đẹp xách tay tại Máy Ảnh Hoàng Tô thì chỉ nằm khoảng từ 9tr – 9tr5 vnđ. Đó là tất cả mọi thông tin liên quan đến dòng ống kính cao cấp này mà bạn có thể tham khảo qua trong quá trình tìm hiểu để đưa ra sự lựa chọn phù hợp nhất dành cho mình. Nếu bạn muốn mua chiếc ống kính canon 24-105mm f4L IS USM xách tay cũ tại shop thì hãy liên hệ ngay hôm nay qua số hotline để được hỗ trợ tốt nhất nhé. THÔNG TIN LIÊN HỆ + Địa chỉ 1025/27A Cách Mạng Tháng Tám, Phường 7, Tân Bình, Hồ Chí Minh + Hotline 0909 860 910 Tác giả Le Nam Nguồn Hình thức Khá đẹp 90% sử dụng tốt, Used ngoại hình cũ kính xước, Đã qua sử dụng như mới 99% The Canon EF-S 17-55mm f/ IS USM Lens, with a fast, fixed f/ aperture, very high image quality, 3-stop Image Stabilization and a very popular focal length range, is one of the best general purpose lenses available. Since EF-S lenses only mount on Canon EF-S bodies - which all feature a FOVCF - the 17-55mm focal length range always equates to the field of view of a lens mounted on a full-frame Digital SLR. This range covers what I consider to be the most important focal lengths for a Canon general purpose lens. This is a focal length range that can be used for everything from a wide scenic landscape to a relatively-close portrait. Canon already had these focal lengths similarly covered in their econo kit lens - the Canon EF-S 18-55mm f/ Lens. Reality is that these are vastly different lenses - in build, optical and feature qualities - and price. The kit lens is a good value for the money, but does not compare with the 17-55 IS. Canon already had a superset of the 17-55mm focal length range covered with the Canon EF-S 17-85mm f/ IS USM Lens. The EF-S 17-85 IS has a higher build quality, image quality and feature set than the EF-S 18-55 - adding Ring USM and 3 stop image stabilization to the feature set. What the 17-55 IS adds to the 17-85's feature set is a fixed f/ aperture and L-Series grade UD Ultra-Low Dispersion glass lens elements. Of course, price, size, weight and a reduced focal length range are the downsides of the 17-55 compared to the 17-85. Positioned above from left to right in their fully retracted positions are the following lenses Canon EF-S 18-55mm f/ IS II Lens Canon EF-S 15-85mm f/ IS USM Lens Canon EF-S 10-22mm f/ USM Lens Canon EF-S 18-135mm f/ IS Lens Canon EF-S 18-200mm f/ IS Lens Canon EF-S 55-250mm f/ IS Lens Canon EF-S 17-55mm f/ IS USM Lens The same lenses are shown below in their fully extended states with their lens hoods in place. With a fixed fast f/ aperture meaning the widest aperture opening is f/ through the entire focal length range - f/22 is the narrowest setting, exposure settings do not change when zooming in on a subject. To some, this is not a big deal - to me, this is a great feature. F/ is as fast as any Canon zoom lens currently made. It is fast enough to stop action in many indoor venues higher ISO settings typically required - fast action indoor sports may require f/2 or wider. This wide aperture also activates the higher autofocus sensitivity mode for certain focus points in many Canon bodies f/ does not have to be selected to get the benefit of this feature. F/ also presents a bright viewfinder to the user. Wide open, the 17-55 is able to produce a nicely blurred background. By employing a circular 7-blade aperture barrel, the Canon 17-55mm Lens produces a decent quality background blur even when stopped down. With a focal length range that is composed of relatively wide focal lengths, this lens needs a close subject to create a diffusely blurred background. Combining an f/ aperture with the 3 stop image stabilization, the Canon EF-S 17-55mm f/ IS USM Lens is arguably the most handholdable lens Canon currently makes. Image stabilization will allow a shot to be taken at a shutter speed up to 3 stops slower than without IS. Sorry, but IS will not stop subject motion. This IS version is tripod sensing to prevent feedback loops between the IS sensor and stabilizer motor vibrations. The manual recommends turning IS off when tripod-mounting the lens to save battery life or when panning panning mode IS is not available. Leave IS on when handholding or shooting from a monopod. The IS implementation on this lens is very well behaved - it is quiet and does not cause the image to jump when starting up. The three lenses compared above are from left to right, the Canon EF-S 17-55mm f/ IS USM Lens, Canon EF-S 17-85mm f/ IS USM Lens and Canon EF-S 18-55mm f/ IS Lens. All lenses are shown extended to their maximum lengths with their optional lens hoods attached. With Ring USM Ultrasonic Motor, the 17-55 IS focuses very quietly and very fast. Focus accuracy has been very good for me an even more important fact. Note that, while I did not notice an issue, some are reporting AF accuracy inconsistencies at infinity focus distance. FTM Full Time Manual focusing is a very nice feature of this lens. The focus ring is rather small, but turns easily. Likely to get far more use is the zoom ring - it is very nicely sized and turns smoothly with little effort. The AF and IS switches are recessed to prevent accidental changes. Canon claims that "By optimising Super Spectra lens coatings and lens element shaping, Canon’s engineers have been effective in suppressing flare and ghosting ­ more prone to occur with digital cameras due to reflection off the image sensor. By increasing light absorption, coatings reduce reflections off lens element surfaces to deliver crisp, undistorted images with natural colour balance." In reality, I am finding the 17-55 IS to be quite flare-prone if the sun or bright light is in the frame. Otherwise, color and contrast are excellent. Prior to receiving my 17-55 IS, I stated that I expected its image quality to match or nearly match that of Canon's L Series Lenses as it shares the L-Series UD lens elements. As it turns out, my 17-55 matches or exceeds the optical performance of my L-Series zooms in this similar focal length range ... This lens is sharp! Wide open and from edge to edge. Unless the distance is close that is - I'm finding that close subjects do not produce the same image sharpness as normal distance subjects. The ISO 12233 chart test results indicate this as well. The 17-55 IS shows slight sharpness improvement at f/4, but performance at f/ is very good. My Canon EF 16-35mm f/ USM Lens is slightly sharper in the center at 17mm wide open, but the 17-55 IS is sharper at all other tested focal lengths - and proved much sharper in the corners at all focal lengths and apertures. Distortion was also less on the 17-55. In my opinion, the only reasons to buy the 16-35 over the 17-55 are for full-frame compatibility a big reason, better build quality and environmental sealing EF-S compatible bodies are not weather sealed at this time. Similar story with the Canon EF 17-40mm f/4L USM Lens. The 17-55 IS is sharper at all other tested focal lengths - and proved much sharper in the corners at all focal lengths and apertures. At close distances, the 17-40 had sharper corners and held its sharpness to a narrower focal length than the 17-55. Lower barrel distortion at the wide end is also in the 17-55's favor. Full-frame compatibility, better build quality and environmental sealing are in the 17-40 L's favor. I suspect the wider price discrepancy between these two lenses will keep sales of the 17-40 L going stronger than for the 16-35. The Canon EF-S 17-85mm f/ IS USM Lens boasts a longer focal length range but lacks the fast aperture and is not as sharp especially in the corners as the 17-55 IS. The two lenses are rather close in center sharpness but most of the time my primary subject is not dead center in the frame. Once again, lower barrel distortion at the wide end is in the 17-55's favor. Price is also a differentiator between these lenses. The similarly-built Canon EF-S 10-22mm f/ USM Lens turned in similar optical results to the 17-55 IS in the short range of focal lengths that overlap. I see these lenses more as complementary than competing. At all overlapping focal lengths and apertures, the 17-55 is sharper than my Canon EF 24-70mm f/ USM Lens. The default image below is a 100% crop from the 17-55 IS at 55mm, f/ Mousing over the image will show a crop from the Canon EF-S 18-55mm f/ IS Lens at f/ wide open. Keep in mind that the 18-55 IS should have a DOF advantage, but you will see the 17-55 IS still performing better in the foreground and background. Also, the vehicle grill is the center of the frame - where the 18-55 IS competes best. However, this focal length is the weakest in the 18-55 IS's range. Some additional information about the above comparison ... This comparison was shot with a Canon EOS 40D. There was a 250-pixel-wide swath removed from the image as indicated by the white line. This allows a foreground object and some background to be present in the image to confirm focus accuracy. Images were shot as RAW and processed with the Neutral Picture Style 0 Contrast and sharpening = 1 very low - 2 would look noticeably sharper. Images were converted in DPP to 16-bit TIFF files, cropped in Photoshop and saved as 80 quality JPG files. The lighting was harsh mid-day sunlight on a clear day. A tripod was used - the shutter speed was 1/2000 for the f/ shot 1/500 for the f/ shot. In addition to being sharp, CA Chromatic Aberrations are very well controlled in the 17-55 IS. The following example is meant to show the difference in CA between an economy lens 18-55 IS again and a top quality zoom. This one was shot at 17mm/18mm and at f/ for both lenses. This 100% crop sample is located about 25% into the frame from the top left corner. Mousing over the image will show the 17-55mm IS advantage. Distortion is present over most of the 17-55mm focal length range. Mild barrel distortion is present until about 24mm where pincushion distortion becomes present through 55mm. Your spouse will appreciate how the 17-55 makes them look thinner at the longer focal lengths use this excuse if you need help getting spousal purchase permission. Being a wide aperture, wide angle lens, expect to see some vignetting from the 17-55 IS. The amount of vignetting is less than I anticipated - basically visible only in the corners at f/ when photographing an even-colored subject such as a blue sky. One of the benefits of using an EF lens on a body is that much of the lens vignetting is not apparent within the cropped field of view. Click on the image below to compare the Canon EF-S 17-55mm f/ IS USM Lens to other lens models with and without hoods opens in new window to save your place in this review. The 17-55 passes distance information to the camera body for use in E-TTL II exposure determination. Most new Canon lenses have included this feature. The Canon EF-S 17-55mm f/ IS USM Lens is a middle weight at oz 645g. At x x the 17-55mm IS becomes the largest EF-S lens to date. It is, however, a very nice size/weight to carry around and balances well on compatible camera bodies. To put size into perspective, the above size comparison photo includes from left to right the Canon EF 17-40mm f/4L USM Lens, Canon EF 24-105mm f/4L IS USM Lens, Canon EF-S 17-55mm f/ IS USM Lens and Canon EF 24-70mm f/ USM Lens. The same lenses are show fully extended below. Similar to many of the L-Series zooms, the 17-55 IS features a 77mm filter thread. A feature appreciated by circular polarizer filter users is the non-rotating front element does not rotate with focusing or focal length change. The 17-55 extends with focal length increase, but does not extend with focusing. With a relatively-long-for-its-focal-length-range closest focusing distance of the 17-55 IS yields a meager maximum magnification of at 55mm. As usual, extension tubes can increase the magnification ability significantly. With the Canon EF 12mm Extension Tube II, magnification is With the Canon EF 25mm Extension Tube II, magnification is Canon's spec. As this is an EF-S lens, version II of Canon's Extension Tubes are required. The 17-55 is not compatible with Canon's Extenders. The 17-55 IS shares design and build qualities with Canon's other recently-released EF-S Lenses - especially the Canon EF-S 10-22mm f/ USM Lens. It is nicely designed and well thought out, though I don't prefer the rear-positioning of the manual focus ring that is where I generally grip the lens. The 17-55 IS is not as elegant in design and function as the L-Series zooms, but it is very good in this regard. Not real important but missing is the Canon date code. I'm not sure why Canon did not go all the way and make the 17-55 IS an L-Series lens. An upgraded metal lens barrel seems to be the missing component - and the red ring. Also, the accessories included with L-Series lenses are missing - the Lens Pouch LP1219 and 17-55 IS-exclusive Lens Hood EW-83J are optional. Since Canon has an L-Series lens on the PowerShot Pro 1, making a non-"EF" L lens is apparently not outside of their definition. This lens certainly has the image quality to be an "L". With the help of a 12mm Extension Tube, you can physically mount this lens on a full frame body. But you probably will not want to. The image above shows the image circle as seen through this combination by a Canon EOS-1Ds Mark III. In addition to the heavy vignetting, AF does not work and the aperture information does not report to the camera. Even in MF mode, more hurdles remain - at 55mm, the 17-55 will not focus any farther away than about 7" or so in front of the lens. This distance rapidly decreases as the focal length is widened until the subject is against the glass and beyond this point no subject can be in-focus. It was a fun exercise at least - and now we know. I am getting some email asking about dust issues with this lens. Some are seeing a noticeable amount of dust collect under the front element. Dust seldom makes a noticeable difference in image quality - No one has indicated to me that their dust has affected the image quality of their 17-55. But it is not normal for this amount of dust to accumulate inside the lens. My 17-55 came with one small speck of dust in it a genuine Canon factory dust speck I suppose and has not accumulated any additional dust. I've shot thousands of mostly outdoor pictures with this lens. Weddings, events, parties, family activities, portraits, landscapes, stage shows, car shows, night sky ... there are far more uses for this lens than I am going to think of. Unless there is an upgrade to a or full frame body in your future, the Canon EF-S 17-55mm f/ IS USM Lens is an ideal lens to include in your kit. Even if a larger format sensor body is in your future, the resale value of this lens remains strong. With the introduction of the 17-55 IS, Canon displays its commitment to the EF-S line of lenses. With the huge base of Canon EF-S Digital SLR users, the 17-55 IS, with its excellent features, specs and image quality, will find a home in many professional and amateur photographers' kits. This is the lens I keep mounted on my body currently a 50D - I highly recommend it. 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 My Recommended Canon EF-S 17-55mm f/ IS USM Lens Retailers Rent the Canon EF-S 17-55mm f/ IS USM Lens The Tip Jar More Canon EF-S 17-55mm f/ IS USM Lens Related Information

canon 40 f2 8 cũ