![]() Use what you learned here to help you decide which Canon lens is right for you. That your lens opens wider may be of little importance. If you are shooting landscapes from a tripod, you are likely happy with f/8.0 or f/11.0. If what you are shooting is indoor action (such as sports), you will appreciate an f/2.0 or wider aperture unless your lighting is unusually bright.Īn f/2.8 lens is often used in these situations, but an ISO setting of 3200 or higher is often required to get close to action-stopping shutter speeds.Īn f/4.0 maximum aperture is generally good in medium lighting levels.Īn f/5.6 maximum aperture requires good lighting or image stabilization unless outdoors before sunset. If your subject is still, image stabilization can be a substitute for a wide aperture (f/4 should be adequate), but image stabilization does not help stop subject action (though flash as the primary light source can). ![]() That answer varies dramatically for individual scenarios, but if you are shooting indoors without a flash (or with a fill flash only), you will probably want an f/2.8 or wider aperture. How strong does the background need to be?.How much DOF (Depth of Field) is required?.What is the maximum ISO speed setting (noise level) acceptable to you or your customer?.What light levels will this lens be used in?.When determining how wide your lens aperture needs to be, consider: Increased size (also requires larger filters).Typically, due to increased lens element diameter, a wide maximum aperture lens has: Performs better (optically and AF) with teleconverters (if compatible).Enables improved low light AF performance (AF systems require light to perform their job).Enables shallower depth of field for stronger a background blur.Enables faster shutter speeds able to stop subject and camera motion in lower light levels potentially at lower ISO settings for less blur and less noise.The widest focal length of this lens has an f/4 aperture available, while the telephoto end opens only to a 1-stop-narrower f/5.6. Here are f-stop examples in full-stop variations, wide (bright/fast) to narrow (dark/slow) from left to right:į/1.4 | f/2.0 | f/2.8 | f/4.0 | f/5.6 | f/8 | f/11 | f/16Ī one-stop difference represents a 1/2x or 2x difference in the amount of light transmitted, and a one-stop change is a big deal.īecause the maximum opening of some lenses does not increase enough with focal length increase to maintain the same maximum aperture ratio, they have a variable max aperture referenced like f/4-5.6. The number following the "f" in the lens model name refers to the maximum measurement ratio the lens can create. The aperture value (f-stop) is the ratio of the focal length to the diameter of the entrance pupil. Time to Rent Something at Lensrentals - Save 15% on Orders Placed by July 4th!Īn important question to ask when selecting a lens for purchase or for a shoot is: "What is the maximum aperture opening I need?".Canon RF-S 18-150mm f/3.5-6.3 IS STM Lens In Stock at Adorama.Used Sony FE 600mm f/4 GM OSS (Save $1,950.00) and Canon RF 85mm F1.2 L USM Lenses, Sony a1 In Stock at B&H.In Today's B&H Deal Zone: WD 2TB Elements SE Portable SSD (2-Pack) – Only $299.99 (Save $240.00), More!.Save 10% Plus Free Shipping on Jackery Portable Power Stations and Solar Panels.Just Posted: Sony FE 24-70mm F2.8 GM II Lens Review.The Canon EOS R3 is In Stock at Canon USA!.Used Gear In Stock at B&H: Sony FE 24-70mm F2.8 GM II Lens, Canon EOS R5 C, Sony a7 IV, RRS TVC-24 MK2 and TFC-24 MK2 Tripods.
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