Canon EF 300mm f/4L IS USM Telephoto Fixed Lens for Canon SLR Cameras - 2530A004

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And for good measure now let’s add the RF 1.4x teleconverter which turns it into a 140-420mm f4 zoom, and finally with the RF 2x teleconverter, which turns it into a 200-600mm f5.6. The Canon RF 100-300mm f2.8L IS USM is a high-end telephoto zoom for the EOS R mirrorless system, aimed at indoor or close-range sports, or where you need a little more reach than a 70-200, like at red-carpet events. The FE 300mm F2.8 GM OSS is a telephoto lens for Sony's range of Alpha 35mm E-mount full-frame mirrorless cameras. Select 300mm wide radiators from Trade Radiators to elevate the warmth and comfort of your interior spaces. Opting for the appropriate radiator size is pivotal for achieving efficient heating in both residential and commercial settings, making your choice a crucial aspect of the overall heating puzzle.

This is followed by switches to limit the distance from 6m to infinity, select manual or autofocus, enable the optical image stabiliser, and choose the actual stabilisation mode. As I turn the barrel you’ll notice the four buttons around the outer end of the barrel as well as one more near the mount, all sharing the same programmable function, set to AF Hold as default. Focusing is courtesy of dual nano USM motors and an overlapping floating design. The lens also supports focus breathing compensation and minimises focus shift when zooming, albeit not officially parfocal. Take complete creative control of your images with PIXMA and imagePROGRAF PRO professional photo printers. The optical formula is comprised of 20 elements in 16 groups, including one ED and three Super ED elements to reduce chromatic aberrations.

Indicators/display: The Tamron 70-300 does not feature a distance or dof indicator on the focus ring like the F-Nikkor. The Z-Nikkor 100-400 has an OLED display indicating focal length, aperture, or focusing distance (in m or ft.) and depth-of-field. [0] As a high-end L-lens, the 100-300 is of course weather-sealed to the same standard as previous Canon super-telephotos, including a rubber grommet at the mount. Note the white coating on the barrel is now more effective under hot conditions than the old 300’s coat. So here they are with their hoods attached, where you’ll see the working length has now become quite similar, indeed almost identical if you add the EF to EOS R adapter to the prime on the left to use it on a mirrorless body. With their slender 300mm width, these radiators boast a notably narrow profile. Among them, you will find an array of options, ranging from extremely compact to impressively tall and substantial units. As a result, these versatile radiators have the capacity to effectively warm anything from small cloakrooms to much larger spaces.

Just before wrapping-up, one last physical comparison, this time from the side, with the new RF 100-300 at the bottom and the old EF 300 prime at the top. And now both lenses with their hoods and an EOS R3 mounted. An inch is the name of a unit of length in a number of different systems, including Imperial units, and United States customary units. There are 36 inches in a yard and 12 inches in a foot. The inch is usually the universal unit of measurement in the United States, and is widely used in the United Kingdom, and Canada, despite the introduction of metric to the latter two in the 1960s and 1970s, respectively. The inch is still commonly used informally, although somewhat less, in other Commonwealth nations such as Australia; an example being the long standing tradition of measuring the height of newborn children in inches rather than centimetres. The international inch is defined to be equal to 25.4 millimeters. Sony says the lens produces bright images throughout the frame, with no darkening in the corners. It includes 2x XD linear motors for fast and precise autofocus and is balanced for comfortable handheld shooting with smooth panning. A number of controls allow for customizing its performance and a new button allows for instant APC-S cropping. The lens is compatible with Sony's 1.4x and 2.0x teleconverters, which turn it into a 420mm F4 and 600mm F6 lens, respectively. The lens exhibits a moderate amount of vignetting that becomes negligible as the lens is stopped down. When using the max aperture, there is about a one-stop of darkening in the corners. At f/5.6, this drops to about half a stop, and by F/8 there is little noticeable darkening in the corners of the frame. Flaring Focus accuracy and repeatability is critical to consistently produce sharp shots. Repeatability (the accuracy of focus on the same subject after repeated focus-acquisition) of the Tamron 70-300mm f4.5-6.3 Di III is very good (measured 98.7% in Reikan FoCal) with no outliers over a series of 40 shots. The lens focuses in around 0.5 sec from infinity at 200mm focal length to 2.17m (1:10 magnification), which is similar to the Z-Nikkor 100-400 but a bit slower than the F-Nikkor 70-300 (on a D810).Both lenses share the same 128mm maximum diameter, but at 323mm, the new zoom is 75mm longer than the old prime. While this is the size you’ll need to accommodate in your bag though, Canon’s reduced the length of the supplied hood. A 100-300 2.8 may be a new proposition for Canon, but isn’t dissimilar to Nikon’s AF-S 120-300mm f2.8, an older lens for DSLRs which still costs around ten grand. And lest we forget the old EF 300 2.8 and 200-400 lenses still command prices of around six and 11 grand respectively, so maybe the new 100-300 2.8 isn’t as expensive as it first sounds.No hang on, of course it is, but my point is this is the kind of price you’ll be paying for a professional super-telephoto, at least from the likes of Canon and Nikon.

As such, it not only becomes the mirrorless replacement for the EF 300mm f2.8L II from 2011, but also arguably an alternative to the EF 200-400mm f4, especially as the new lens will work with Canon’s existing RF teleconverters to extend its reach.Add the RF 1.4x TC and the 100-300 2.8 becomes a 140-420 f4.Add the RF 2x TC and it becomes a 200-600mm f5.6, which could be useful for more distant sports or even wildlife.The right home heating solution is one that looks the part and also performs efficiently. To get this right, you need to know the BTU output your space requires from 300mm wide radiators. Make use of the free Trade Radiators BTU heating calculator to identify the heating needs of your interior. Alongside the A9 III, Sony showed off a fresh piece of glass to its wide selection of lenses: the FE 300mm F2.8 G Master OSS prime lens. The lens joins Sony's top G Master sports and wild-life focused lenses, including the 400mm F2.8 GM OSS and the 600mm F4 GM OSS. It features a similar magnesium alloy build, is dust and moisture resistant, and includes fluorine protection on the front glass. It measures 10.4 by 4.8 inches (HW) and weighs 3.24 pounds. It's about half the weight of the larger 400mm lens. (Credit: Sony) Like most Tokina lenses of the era, the Tokina 300mm f/4 doesn’t handle flare particularly well. Overall contrast is reduced substantially when shooting against the sun. At times this defect can lend a dreamy quality to photographs. Chromatic Aberration Seeking the best printer for your business? Hit your productivity targets with inkjet and laser printers that are a perfect fit for any workspace – including home offices. The Sony FE 300mm F2.8 GM OSS has a fairly wide and ridged focus ring into which are set the focus hold buttons.

This is the world's lightest 300mm F2.8 telephoto prime lens currently available for any camera system. Next the RF 400 2.8 super-tele prime lens which can mount natively to the EOS R3, although I couldn’t fit the hood into the frame. The Sony 300mm uses two XD Linear Motors for quiet and precise auto-focusing, and full-time DMF manual focus override is also possible. The Sony FE 300mm F2.8 GM OSS features optical image stabilisation, which together with the camera's own built-in stabilisation mean that we could successfully hand-hold it up to around 4 stops slower than with a lens and camera body with no OIS.Enjoy high quality performance, low cost prints and ultimate convenience with the PIXMA G series of refillable ink tank printers.