September 2025

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A leopard shark swims underwater, accompanied closely by a remora fish attached to its side in clear blue ocean water.

Wild Leopard Sharks Mating Caught on Camera for First Time Ever

Scientists working in the South Pacific made scientific history after recording leopard sharks mating. The never-before-captured mating sequence caught the sharks, also known as zebra sharks (Stegostoma tigrinum), in a "threesome," and the footage could help aid vital conservation efforts.

A Nikon Z-series mirrorless camera with no lens attached, showing the sensor, against a green and black abstract background.

Nikon Can’t Fully Solve the Z6 III’s C2PA Problems Alone

Nikon suspended the brand new C2PA functionality introduced in the Nikon Z6 III's first major firmware update after a major security issue was discovered. Nikon has taken the critical step to revoke all C2PA signatures issued before the C2PA functionality was taken offline, but a complete resolution will require changes to the C2PA validation tools themselves.

A smartphone displays the TikTok logo on its screen, positioned in front of a blurred American flag in the background.

TikTok’s Algorithm Will Be Under American Control In Trump’s Deal

President Trump is expected to sign an executive order this week to finalize a long-rumored TikTok acquisition. In view of the impending deal, more details surrounding how the U.S. will tweak TikTok have come to light, including changes to the app's algorithm that is essential to its success and core to security concerns surrounding the app.

A camera lens is displayed on a checkered surface with a "Petapixel Editors' Choice" badge and "Petapixel Reviews" text in the bottom right corner. The background is dark and out of focus.

Sigma 135mm f/1.4 DG Art Review: Massive and Magnificent

I absolutely love the 135mm focal length, and feel like it’s quite underrepresented on modern mirrorless mounts. It’s a great choice for portraits, candids, indoor sports, and street photography. So when I heard Chris Niccolls would be unavailable to review the new Sigma 135mm f/1.4 DG Art lens, I jumped at the chance!

A collage of three photos: a stone bridge over a river in a city, people walking through a covered, illuminated shopping street at night, and a woman with dark hair wearing a white top and heart necklace.

Photographer Captures the Stillness and Emotional Depth In Everyday Life

Modern photography is often defined by speed, filters, and fleeting trends, yet Kerwin Mallari has carved a distinctive path by focusing on stillness, intuition, and the subtle beauty of everyday life. Surrounded from an early age by his father’s extensive collection of photographs, he developed a profound appreciation for the stories that images can tell.

A close-up of an electronics workbench with a circuit board, wires, a linear rail system, a magnifying glass, and various electronic components arranged on a wooden surface.

How to Build a ‘Simple’ Focus Stacking System

Each year, my photographic instrumentation students build very simple focus stacking systems. After several years, I decided to construct a more advanced version that could move a stepper-motor-driven stage to precise positions, automatically collect a series of images, and then manually use a stacking program for combination into a single high-depth-of-field image.

Frosted glass with cut-out letters partially reading "GR SPACE BRISBANE," with the background faintly visible through the transparent text.

Brisbane, Australia to Open the First GR Space Photo Hub Outside of Asia

Ricoh Imaging not only manufactures the extremely popular GR series of cameras, but the company also operates three GR Space locations in Tokyo, Shanghai, and Beijing, which are designed to serve as dedicated community hubs for photographers. Brisbane, Australia, is set to be the fourth global location for a GR Space when it opens in October.