Review of the Thypoch Simera 35mm f/1.4 lens.
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Untested advice from ChatGPT: The following comes from ChatGPT. I am unable to verify the content from personal experience. I have entered this advice onto this blog as part of…
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What filters are built in on various generations of Sony A7 cameras?
Short answer: all Sony A7-series cameras have essentially the same type of built-in filter, and it hasn’t fundamentally changed across generations. What has changed is how effective and refined it…
Recommended prime lens kit for Sony Alpha A camera for wildlife photography using Minolta AF lenses
For wildlife with Minolta AF (A-mount), the key factors are reach (300–600 mm equivalent), autofocus speed, and optical quality (APO/G glass). Unlike modern systems, Minolta’s strength is in a handful…
Recommending an everyday prime lenses kit for Sony Alpha A camera using Minolta AF lenses
Putting together a really useful Minolta AF prime kit for a Sony A-mount body is all about covering focal lengths while keeping the classic Minolta rendering (colour + smooth bokeh).…
Minolta AF 85mm F1.4 camera lens
This is my new purchase for me to use with my Sony Alpha 99 camera, and via adapter with my Sony Alpha 7 camera. This is a famous lens, very…
My main microscope is an Zeiss IM35 inverted microscope
The Carl Zeiss AG IM35 microscope is a classic inverted research microscope that was widely used in laboratories from the 1970s–1980s. 🔬 What the Zeiss IM35 is The Zeiss IM35…
What is a Calibrated Renishaw inVia Research-Grade Confocal Raman Microscope Spectrometer?
A calibrated Renishaw plc inVia research-grade confocal Raman microscope spectrometer is a high-end laboratory instrument used to identify and map the chemical composition of materials at microscopic scales. Let’s unpack…
What is Lockman Hole?
The Lockman Hole is a special region of the sky that astronomers love because it is unusually “clear” when viewed in certain wavelengths—especially X-rays and ultraviolet. Why it’s important Normally,…
Converting between relative RMS power to dB in order to make performance estimates of radio telescope systems
Hi Andy, Just been watching the recent April 2026 Drakes lounge and in particular your piece where you talked about how you worked with Jason to make a conversion between…