Tamron’s rumored compact f/2.8 ultra-wide zoom targets Sony astrophotographers
A leaked 12-20mm f/2.8 from Tamron could put a 12mm nightscape zoom in Sony hands at roughly half the price of Sony’s 12-24mm F2.8 GM.
Tamron’s rumored 12-20mm f/2.8 for Sony E and Nikon Z was leaked with a July 15 reveal date, and the number that matters most for astrophotography is not the badge or the mount. It is the 12mm start point paired with a constant f/2.8 aperture, a combination that can turn a Sony body into a much easier Milky Way tool if the lens performs the way the leaked text says it will.
The leaked press text makes the right promises for night shooters: it says the lens is designed to suppress peripheral blur, color fringing, and sagittal coma flare, while keeping sharpness from the center to the extreme edges of the frame. That is the real buyer’s guide question here. If those claims hold up in the field, the 12-20mm could matter more for corner stars wide open than for pure focal-length bragging rights, especially because Sony’s FE 12-24mm F2.8 GM already sits at 12-24mm, weighs 847 g, and carries a U.S. price of $3,249.99.
Tamron has been building toward this kind of lens for a while. Its official July 1, 2025 launch of the 16-30mm F2.8 G2 for Sony E-mount and Nikon Z mount came packaged as the completion of its “G2 Trinity,” alongside the 28-75mm F2.8 G2 and 70-180mm F2.8 G2. Tamron’s own Reviews / Articles section also tags astrophotography as a lens genre, and photographer Kazuyuki Okajima’s 16-30mm F2.8 G2 feature sat under Landscape Astrophotography. That matters because it shows Tamron is not treating night sky use as an afterthought.
The other clue is scale. Tamron’s 16-30mm F2.8 G2 weighs 440 g and uses a 67mm filter size, while Tamron’s June 24, 2026 news feed shows the company is still pushing fresh full-frame f/2.8 glass, including the 35-100mm F2.8 for Sony E-mount and Nikon Z mount. Put together, the rumor reads like a familiar Tamron play: shrink the lens, keep the aperture bright, and undercut the premium Sony option hard enough to make a field-lens argument instead of a spec-sheet contest. If the leak is accurate, Sony astrophotographers may get a wide zoom that looks built for dark skies first and marketing photos second.
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