Sony's latest lens, the FE 50-150mm f/2 GM, raises some interesting questions about gear priorities and lens preferences. Is it right for you?
Coming to you from Dan Watson, this great video review takes a look at the Sony FE 50-150mm f/2 GM lens. Watson points out the rarity of constant f/2 zoom lenses, mentioning the recent Sony 28-70mm f/2, which hints Sony might be developing a versatile lineup in this unique aperture range. He compares the new 50-150mm f/2 to the popular Tamron 35-150mm f/2-2.8 Di III VXD, a lens he enjoys but admits doesn't see frequent use despite its strengths. Interestingly, Watson shares that although the Sony feels lighter and better balanced in hand than the Tamron, it's about 200 grams heavier—something to consider if you're regularly on the move.
Watson also provides a straightforward assessment of the lens' practical hardware. For example, its internal zoom mechanism eliminates weight shifts while zooming, making handheld use easier. Although hefty with its substantial 95mm front filter thread, Watson found this didn't hinder his workflow much. Notably, this lens focuses exceptionally fast thanks to four XD linear autofocus motors, making it ideal for high-speed photography using the Sony a9 III or Sony a1 II, both of which support continuous autofocus at up to 120 fps.
Key Specs
- Focal Length: 50 to 150mm
- Maximum Aperture: f/2 (constant throughout range)
- Lens Mount: Sony E (Full Frame)
- Minimum Focus Distance: 1.3' (50mm) to 2.4' (150mm)
- Magnification: 0.2x (1:5 macro reproduction)
- Optical Design: 19 elements in 17 groups
- Aperture Blades: 11, rounded
- Autofocus: Yes, with four XD linear motors
- Image Stabilization: No
- Filter Size: 95 mm
- Dimensions: ø 4 x 7.9" (ø 102.8 x 200 mm)
- Weight: 2.9 lb (1340 g)
- Tripod mounting: Removable, rotating collar
Watson particularly notes its outstanding image quality, praising the sharpness wide open, pleasing bokeh, and minimal focus breathing. He specifically cites weddings and indoor sports as scenarios where this lens excels, given its wide f/2 aperture and versatile focal length. For video shooters, maintaining a constant aperture during recording without compensating exposure changes is invaluable, something variable aperture lenses can’t offer.
Although it's built exceptionally well and delivers impressive performance, Watson doesn't shy away from mentioning the notable drawbacks: the high $4,000 price tag and considerable size. This lens isn’t a casual piece of gear you'd readily toss into a backpack for a spontaneous outing. Watson suggests that despite its advantages, cost-conscious professionals might still gravitate toward primes or more affordable alternatives like the Tamron.
He also speculates about the possibility of Sony completing a full set of f/2 constant aperture zooms in the future. Having already delivered the 28-70mm f/2 and now this 50-150mm variant, it could signal plans for a full f/2 trinity, perhaps a wide angle model next—an attractive prospect for those looking to build a premium quality lens kit. Check out the video above for the full rundown from Watson.
