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Macro Getting really close

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Old 4th December 2018
Harold Gough Harold Gough is offline
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Metatrichia species? Laowa 25mm on A7R with Stere

I had been wanting to try out my Laowa 25mm x2.5 to x5 on full frame. Then I came across a Slime Mould on my very productive rotting apple trunk wood. It looked very much like the frequently-encountered Trichia decipiens although the density of the population was unusually high.

I could see many orange/yellow unripe fruiting bodies, one group of brownish ones and one group which looked almost black to the naked eye. When I looked more closely at the blackish ones, I saw that some were tightly-grouped, forming a microscopic tree-like bunch. This is the habit of Metatrichia

I will see if all the colonies do this, the black colour also being correct for T. decipiens.

The reason for choosing full format was to get the lens acting as 25mm, not 50mm as on m4/3. This was to get maximum depth effect. The shots were at from x2.5, via x4, to x5 at f11. I have only two TTL RC flash units for Sony, so they were placed on either side, on a little higher than the other.

The stereo is crosseye. Most cropping has been vertical.

Sony A7R (aperture priority mode), Laowa 25mm f2.8 2.5x-5x ultra-macro at f11, ISO 160, triple TTL flash hand-held. FOV 14mm down to 7mm wide.

It is many months since I used the camera and have never use it much and was surprised to see I has used ISO 160!


The body is willing but the mind is weak.
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