Isaac GP

Last Update 2022-10-25

Blog

Latest news on the Blog
October 4, 2022

Sigma 50mm F1.4 DG HSM Art for Sony E-mount in Astrophotography and Infrared

Here are some examples of how this lens behaves, especially in astrophotography and infrared photography. The tested lens is Sigma 50mm F1.4 DG HSM...

March 14, 2022

Aurora from Estonia G2 storm

During the Pi Day, 3-14, (2022 March 13th to 14th) a G2 geomagnetic storm could be seen from Estonia. Cracks in Earth’s magnetic field,...

February 11, 2022

Cloudbow, the white rainbow in Estonia

The colors of the rainbow are 7 but in front of me I have a white rainbow. You can see that it’s not a...

July 15, 2021

Funnel clouds over the Baltic

Seeing a tornado has been on my mind for a long time, and coincidentally Estonia is a privileged place for it. Located in one...

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Donut-shaped mutant Marguerite daisy: Fasciation

No, it is not Fukushima. Yes, it is a mutation. This is a curious case of fasciation. It is rare, but not unusual for...

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Experience with Sony Zeiss Distagon T* FE 35mm F1.4 ZA in Astrophotography and Infrared

Sony Zeiss 35mm 1.4 Distagon It is not sharp and clear from corner to corner. Infrared photography, not recommended.

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Radioactive lenses and airports

My thing with airports is not new. I like to fly and I get on an airplane whenever I have the opportunity. There is...

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Bad Lens for Astrophotography: Canon EF 50mm f/1.4 USM

I do not usually make reviews of photographic material, but recently a friend told me excited that he had bought a Canon EF 50mm...

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Essays

I do my best to delve into the topics that catch my attention, but sometimes I have the feeling that something is missing or does not fit. This feeling leads me to continue observing and developing my own explanations, approaching the subject from a different and very personal point of view.

Geese fly V formation alternative theory, the social theory

Why do geese fly in a V formation? Geese fly theory revised considering aerodynamic and social factors.

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Changelog

Changes within the content

Photos or texts updated, post corrected or extended ... here are the latest improvements I've been making.
The Spanish version of this website will be out very soon.