Sony’s Sharpest Macro Yet: The 100mm f/2.8 G Master in Action

Sony’s latest 100mm macro lens introduces a level of detail and flexibility that makes even seasoned shooters rethink what a macro lens can do. Here's a look at what you can expect.

Coming to you from Stefan Malloch, this detailed video breaks down the Sony FE 100mm f/2.8 Macro GM lens and what makes it stand apart from the older Sony 90mm G and the Tamron 90mm alternatives. The 100mm is Sony’s first true G Master macro and goes beyond the standard 1:1 magnification. It hits 1.4:1 out of the box, and you can pair it with Sony’s 1.4x or 2x teleconverters for magnifications up to 2.8:1. That means you can fill the frame with subjects smaller than a fingernail, while keeping the image crisp edge to edge. Malloch notes that the autofocus is quick and accurate even when working inches from your subject, something rare in macro territory. He also compares this directly to the older Sony 90mm, which can lag in low light and shows its age when tested side by side.

Key Specs

• Focal Length: 100mm

• Maximum Aperture: f/2.8

• Minimum Aperture: f/22

• Minimum Focus Distance: 10.2 in / 26 cm

• Magnification: 1.4:1 Macro Reproduction Ratio

• Optical Design: 17 Elements in 13 Groups

• Aperture Blades: 11 Rounded

• Focus Type: Autofocus

• Image Stabilization: Yes (Optical SteadyShot)

• Filter Size: 67mm

• Dimensions: 3.2 x 5.8 in / 81.4 x 147.9 mm

• Weight: 1.4 lb / 646 g

Malloch also tests the autofocus from close to far distances, demonstrating how the new G Master transitions smoothly between focus points with no hunting. Compared to the older 90mm, which struggles in low light, the new 100mm locks on reliably even when light levels drop. The Tamron he also compares still holds its own for speed, but Malloch finds the Sony smoother and more consistent overall.

Sharpness is where this lens separates itself. Wide open at f/2.8, detail holds strong across the entire frame. Stop down to f/4 or f/5.6 and vignetting clears completely, leaving image quality that borders on surgical. In side-by-side comparisons, the 100mm G Master outperforms both competitors in contrast and clarity, with cleaner corners and virtually no chromatic aberration. The color rendering is rich and neutral, and the 11-blade aperture delivers a smooth, natural background blur that flatters everything from insects to jewelry to portraits.

Malloch also breaks down the handling. The build is slightly larger and lighter-feeling than the 90mm, with a full-time manual focus switch, focus limiter, customizable focus hold buttons, and optical steady shot that works with your camera’s stabilization. It includes a clutch mechanism that makes it easy to toggle between manual and autofocus without taking your eyes off the viewfinder. The 67mm filter thread is more practical than the older 62mm size, and the lens includes a gasket for weather-sealing confidence in the field. Check out the video above for the full rundown from Malloch.