10/27/2022 0 Comments Sel 2870 objektivWhen recording video, only 1/60 second shutter speeds (twice recording framerate) are typically needed (assuming you’re not capturing high framerate slow-motion video) and wide apertures are not often required for 1/60 second rates in normally encountered ambient lighting.Ī downside to the variable max aperture is that, by definition, the same max aperture cannot be used over the entire focal length selected. Those following the old "f/8 and be there" rule and those photographing outdoors under direct sunlight will have the necessary apertures available for most uses. These max apertures make this lens a poor choice for low light action such as indoor sports without flash (as a main light/overpowering ambient light) being involved. Positive is that the narrowest max aperture does not kick in until 61mm. While the f/3.5 aperture at the wide end is reasonably wide, few 28mm lenses do not open to at least f/4 and, as is frequently the case with similar lenses, f/3.5 is only available for a very short 3mm range. Here is this lens' max aperture step down by focal length: To keep those factors especially low, many zoom lenses incorporate a variable max aperture design.Ī relatively narrow variable max aperture is what the Sony FE 28-70mm f/3.5-5.6 OSS Lens has. Wider apertures (lower numbers) are always better to have available - until the price, size, and weight penalties are factored in. The f/3.5-5.6 in the name refers to the maximum aperture, the ratio of the focal length to the diameter of the entrance pupil, available in this lens. This lens is very small and light but it is not very bright. With an angle of view similar to a 41-105mm lens on a full-frame camera, this lens has increased potential for portraiture and other short telephoto needs while the wide-angle uses are essentially erased. Here is an example of what this focal length range looks like (borrowed from another 28-70mm lens review):ĪPS-C sensor format cameras utilize a smaller portion of the image circle and that means a scene is framed tighter with 1.5x being the angle of view equivalence multiplier for Sony's lineup. This focal length range is well-suited for commercial photography and is ready to capture some architecture, cities, country sides, flowers, medium and large products, and much more. The 28mm end is not especially wide but it can create compelling wide-angle landscape compositions, providing emphasis on a foreground subject against an in-focus background with the viewer feeling a sense of presence in the scene.Īt the other end of the range, 70mm works great for mildly-compressed landscapes featuring distant subjects such as mountains remaining large. This range is a good choice for landscape photography with compositions ideally captured using every focal length available in this lens. This focal length range is a perfect choice for media and photojournalistic needs. Use 70mm for head and shoulders portraits and the wider end for groups and environmental imagery. This is a great focal length range for photographing people and it is ideal for portraits, weddings, parties, events, documentaries, interviews, lifestyle, theater, fashion, studio portraiture, candids, and some sports (all when adequate lighting is available - more about this later). Zoom lenses have a great advantage over prime lenses in this regard and the 28-70mm focal length range contained in this lens covers a huge range of needs, making it a great general-purpose choice. That's what I wanted to know - let's find out.Ī primary lens selection feature should be the focal length or focal length range. Is this lens's image quality good enough? Low price is a feature that everyone can get behind and a useful general-purpose focal length range, OSS, weather sealing, light weight, and compact size are more features that all will appreciate.
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