Tag Archives: Horshack

New open-source img2nef utility: convert any image into a Nikon NEF RAW file

By [NR] admin | Published: November 16, 2025

Long-time NR reader and contributor Horshack has released a new open-source img2nef utility that converts any image file into a Nikon NEF lossless-compressed RAW file. Here are the details:

Posted in Nikon Software| Tagged | 54 Comments

Nikon sent out a new notice informing users that all C2PA certificates issued will be revoked

By [NR] admin | Published: September 21, 2025

Here is an update on the major vulnerability in Nikon’s C2PA feature, which a long-time NR reader and contributor, Horshack detected. Nikon has sent out a new notice, informing users that all C2PA certificates issued will be revoked. Here are the details:

Posted in Nikon Z6III| Also tagged , , | 15 Comments

Nikon temporarily suspended the Nikon Authenticity Service

By [NR] admin | Published: September 5, 2025

Nikon temporarily suspended the Nikon Authenticity Service after the long-time NR reader and contributor Horshack found a major vulnerability in Nikon’s C2PA feature on the Z6 III camera (now priced at $2,697, thanks to Trump’s tariffs, was $2,499 before). Here is the official notice from Nikon:

Posted in Nikon Z6III| Also tagged , , | 97 Comments

Major vulnerability in Nikon’s C2PA feature on the Z6 III detected by a reader?

By [NR] admin | Published: September 3, 2025

Long-time NR reader and contributor Horshack found a major vulnerability in Nikon’s C2PA feature on the Z6 III camera (released a week ago). Here is his report:

Posted in Nikon Z6III| Also tagged , , | 57 Comments

Demystifying Log ISO, Exposure, and Noise

By [NR] admin | Published: January 8, 2025

Demystifying Log ISO, Exposure, and Noise by Horshack (I briefly covered the video in my last weekly recap):

Posted in Other Nikon stuff| Also tagged | 7 Comments

Understanding Dual Gain ISO on the Nikon Z6 III and other cameras

By [NR] admin | Published: July 20, 2024

Long-time [NR] reader Horshack published another video on how Dual Gain ISO works on the Z6 III and other cameras as a stepping stone to a potential video about the DR and noise impact of partially/fully stacked sensors:

Posted in Nikon Z6III| Also tagged | 5 Comments

Nikon Z6 III sensor readout speed measurements

By [NR] admin | Published: July 6, 2024

Nikon Z6 III sensor readout speed measurements by horshack: My name is Adam and go by “horshack” on dpreview. This year I started a crowd-source project on GitHub for measuring the sensor readout speeds for as many cameras as possible. The methodology involves custom firmware running on an inexpensive Arduino board that flashes its built-in […]

Posted in Nikon Z6III| Also tagged | 67 Comments