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Voigtländer’s latest lens lets photographers dial in the bokeh look
Image: Cosina Voigtländer Cosina Voigtländer announced a new offering that gives users more control over their images. The Portrait Heliar 75mm F1.8 is the company's first lens with controllable spherical aberration, allowing photographers to adjust the look of the bokeh. Image: Cosina Voigtländer Cosina designed its Portrait Heliar 75mm F1.8 lens for full-frame Sony E-mount cameras. As expected of a Voigtländer lens, it relies on manual focus and features an aperture control ring. Additionally, the front of the lens features a spherical aberration control ring marked 'over' and 'under.' Turning that ring allows photographers to under- or overcorrect spherical aberration, changing the look of out-of-focus areas. Rotating to ‘under’ produces soft, rounded out-of-focus areas, while shifting it to ‘over’ creates a sharper, less rounded bokeh. Changing from "under" to "over" adjusts the look of the out-of-focus areas along with contrast, overall sharpness and vignetting. Image: Cosina Voigtländer Adjusting the spherical aberration does more than just change the bokeh. Setting the ring to 'under' produces images with less sharpness and contrast across the entire image. The 'normal' position results in the greatest sharpness and contrast. Turning the ring also shifts the focus position and reduces the peripheral light intensity, resulting in vignetting. Cosina also says the spherical aberration ring changes the f-stop by 1/3 EV, so photographers will need to adjust exposure after rotating that ring. A sample image from the Portrait Heliar 75mm F1.8. Image: Cosina Voigtländer At the 'normal' setting, the Portrait Heliar 75mm F1.8 functions like any other lens. It features six elements in three groups, and Cosina promises high resolution and well-controlled color shifts. It features a nine-blade aperture. While it is manual focus, the lens has electronic contacts to pass along Exif data. A built-in distance encoder supports the camera's five-axis image stabilization and allows users to see a magnified image when adjusting focus. Cosina says the lens will be available in June of this year. The company has not provided US pricing information, though PetaPixel reports it will cost £750 in the United Kingdom before VAT.
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| Image: Cosina Voigtländer |
Cosina Voigtländer announced a new offering that gives users more control over their images. The Portrait Heliar 75mm F1.8 is the company's first lens with controllable spherical aberration, allowing photographers to adjust the look of the bokeh.
 |
| Image: Cosina Voigtländer |
Cosina designed its Portrait Heliar 75mm F1.8 lens for full-frame Sony E-mount cameras. As expected of a Voigtländer lens, it relies on manual focus and features an aperture control ring. Additionally, the front of the lens features a spherical aberration control ring marked 'over' and 'under.' Turning that ring allows photographers to under- or overcorrect spherical aberration, changing the look of out-of-focus areas. Rotating to ‘under’ produces soft, rounded out-of-focus areas, while shifting it to ‘over’ creates a sharper, less rounded bokeh.
 |
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Changing from "under" to "over" adjusts the look of the out-of-focus areas along with contrast, overall sharpness and vignetting. Image: Cosina Voigtländer |
Adjusting the spherical aberration does more than just change the bokeh. Setting the ring to 'under' produces images with less sharpness and contrast across the entire image. The 'normal' position results in the greatest sharpness and contrast. Turning the ring also shifts the focus position and reduces the peripheral light intensity, resulting in vignetting. Cosina also says the spherical aberration ring changes the f-stop by 1/3 EV, so photographers will need to adjust exposure after rotating that ring.
 |
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A sample image from the Portrait Heliar 75mm F1.8. Image: Cosina Voigtländer |
At the 'normal' setting, the Portrait Heliar 75mm F1.8 functions like any other lens. It features six elements in three groups, and Cosina promises high resolution and well-controlled color shifts. It features a nine-blade aperture. While it is manual focus, the lens has electronic contacts to pass along Exif data. A built-in distance encoder supports the camera's five-axis image stabilization and allows users to see a magnified image when adjusting focus.
Cosina says the lens will be available in June of this year. The company has not provided US pricing information, though PetaPixel reports it will cost £750 in the United Kingdom before VAT.
