Macro Photography Session | Rocks à La Carte

Hello everybody :)

Back to the board where there are still some rocky gems waiting to be visually scrutinized :)
This time i chose a small rock with some very interesting characteristics that gain even more importance when we enlarge the viewing surface.
I can't say exactly what is causing those reddish tones, which look like a combination of different minerals, but after some research, i got some answers.

The red tone can have several origins, often related to the mineralogical composition and geological processes that the rock has experienced over time.
Among some of the possible causes is the presence of iron oxides (Fe203) through minerals such as hematite and goethite.
Another possible cause could be prolonged exposure to atmospheric weathering resulting in weathering and oxidation.
The presence of clay minerals and silicate minerals may also justify the reddish tone.

Here is the catalogue:

The rocks included in this catalog were meticulously chosen from a diverse array of stones gathered on the mountain. Through their diversity, they collectively offer a visual depiction of the geological features inherent to this region.
Today i present another rock chosen randomly from the board, called "Terranite" :)

Let me present today’s model:

Before moving onto the result...

My introductory thoughts about macro photography:

It's amazing how macros with their blurred background can result in such different images full of contrasts and textures especially with this kind of subjects.
In the world of photography, especially macro photography, there is a universe of things available to everyone, enabling totally different and original approaches.

Among the various possible techniques to shoot macros, this is perhaps the most affordable and effective technique for those who have a camera with removable lens.
We can simply remove the lens and reverse the direction, and by using an inverter ring it ends up being more comfortable and facilitates the process.

Let's now move onto the result:

_{F-stop: f/0 | Exposure time: 1/1100 sec. | ISO speed: ISO 1600}