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Sony's FE 100mm F2.8 STF GM OSS (SEL100F28GM) is truly a remarkable lens. Its APD apodizing mirror provides a smooth and soft focus, which is something unique to the STF series. This lens is not just another macro lens despite its focal length and aperture being close to Sony's FE 90mm F2.8 GM OSS. There’s a reason behind its introduction, and once you explore its features, you'll understand why.
One of the standout features of the FE 100mm F2.8 STF GM OSS is its "soft focus" capability. It might remind you of Minolta's 135mm F2.8 (T4.5) STF, which was known for its exceptional out-of-focus imaging. However, unlike its predecessor, which required manual focusing, this lens offers fast autofocus, making it more versatile for portrait and action photography. The smooth and gradual transitions in the out-of-focus areas are what set this lens apart, eliminating sharp outlines and providing a more natural and artistic blur.
When looking at the lens specifications, many might mistakenly assume it's a macro lens due to its focal length and aperture. However, its real strength lies in its ability to create stunningly smooth bokeh effects. For example, at an aperture of F5.6, it achieves a depth of field equivalent to F2.8, thanks to its advanced optical design. This is something hard to grasp unless you compare it to traditional lenses. The result is an image where the subject stands out beautifully against a perfectly blurred background, regardless of the surrounding environment.
Take, for instance, the photo below captured using the Sony ILCE-9 with the FE 100mm F2.8 STF GM OSS at F5.6. Even with a relatively slow shutter speed, the background is beautifully blurred, making the subject pop.
In low light situations, the lens's image stabilization helps maintain sharpness while allowing you to use slower shutter speeds and lower ISO settings. This is crucial when shooting in challenging lighting conditions.
While the lens excels in creating a dreamy out-of-focus effect, it doesn't compromise on image clarity. The in-focus areas remain sharp and detailed, offering high-resolution performance typical of Sony's GM series lenses.
However, there is a trade-off. The lens's maximum aperture of F5.6 means it requires higher ISO settings in low light, leading to increased noise. But with its excellent stabilization, you can still achieve great results even in dim environments.
Despite these limitations, the FE 100mm F2.8 STF GM OSS remains a fantastic lens for those who love to experiment with bokeh and soft focus effects. Its unique capabilities make it stand out among Sony's lineup, especially for portrait and creative photography.
For those considering whether this lens is worth it over something like the FE 85mm F1.4GM, it ultimately depends on your style and preferences. While the 85mm F1.4GM offers faster aperture and simpler operation, the 100mm F2.8 STF GM OSS provides a more artistic and visually appealing out-of-focus effect.
I hope this overview gives you a better understanding of what makes the FE 100mm F2.8 STF GM OSS special. If you're interested in exploring the world of soft focus and bokeh, this lens is definitely worth checking out. Its unique qualities and impressive build make it a must-have for any serious photographer.