The intracies of modern camera lens repair (2024)

I stumbled across a broken Sigma 45mm f/2.8 Art lens for a very cool $58.65 USD that I simply could not resist. I've been eyeing an AF lens in the 50mm range for my recent endeavors with L-mount cameras and this looked like the perfect fit. This lens is commonly found as a kit with the very excellent full-frame Sigma FP camera series. Here is my comprehensive guide to bringing the lens back into service. I delve into the nitty-gritty details of lens PCB repair and lens disassembly techniques.

Show HN: ABC Classic 100 Rankings visualised

Mouseless – keyboard-driven control of macOS/Linux/Windows

My Agent Skill for Test-Driven Development

SaturnCI: Continuous Integration for Ruby on Rails

How LLMs work

A from-the-ground-up walkthrough of how modern LLMs work, from tokens to transformer blocks to the next-token loop

New method turns ocean water into drinking water, without waste

The energy-efficient desalination system produces fresh water without chemical additives and transforms leftover salts into useful materials.

Gov.uk has replaced Stripe with Dutch provider Adyen

Means residents can skip the credit card and use 'pay by bank' for local authorities and services

Did Claude increase bugs in rsync?

Lockdown Mode

Learn how Lockdown Mode limits access to the web and external services to help reduce data exfiltration risk from prompt injection attacks.

Europe's largest Copper Age tomb: children's bones show ancient health crisis

Nearly 5,000 years ago, respiratory infections, possibly including tuberculosis, were ravaging the children buried at Camino del Molino (CMOL), Spain. The massive circular burial cave carved into rock is Europe's largest Copper Age mass burial, containing over 1,300 individuals, and has been the subject of years of excavation and analysis.

The Quiet Numbers Station: Decoding Nineteen Years of GPS Cryptography

The Global Positioning System (GPS) relies on its primary L1 frequency to broadcast precise timing and orbital data, allowing receivers on Earth to calculate their exact location. Because the L1 C/A signal transmits at just fifty bits per second, every bit of this navigation data must earn its place,The Global Positioning System (GPS) relies on its primary L1 frequency to broadcast precise timing and orbital data, allowing receivers on Earth to calculate their exact location. Because the L1 C/A signal transmits at just fifty bits per second, every bit of this navigation data must earn its place

Pre-Modern Armies for Worldbuilders, Part I: Why They Fight

This week I want to try something a little different. Rather than taking apart a particular fantasy military system, I thought I might try to lay out a more general sense of how military systems tend to map on to societies, both because such general historical frameworks are handy for thinking about the past, but…

Astronauts told to return to ISS after sheltering over air leak repairs

Nasa had directed five of the seven astronauts to shelter inside the docked SpaceX Crew Dragon "Freedom" spacecraft while two Russian cosmonauts attempted an urgent repair.

Nine Ways to Do Inheritance in Rust, a Language Without Inheritance

Rust has no class inheritance, but traits, bounds, impls, generics, and macros provide shared interfaces and reusable behavior in real code.

Nordstjernen 1.0

Nordstjernen web browser. Contribute to nordstjernen-web/nordstjernen development by creating an account on GitHub.

Three of our worst VC stories

pg_durable: Microsoft open sources in-database durable execution

PostgreSQL in-database durable execution. Contribute to microsoft/pg_durable development by creating an account on GitHub.

Gemma 4 QAT models: Optimizing compression for mobile and laptop efficiency

We’re releasing Gemma 4 quantization-aware training checkpoints, reducing memory requirements and improving on-device performance.