Some more Photo experiments.

[Martin Thoene]

I popped the first production from my balcony sited Algae-farm tanks into the River-Tank last night and it gave me some good photo opportunities. The fish went nuts for it.

Instead of operating the camera in 'P' mode where exposure and aperture are camera sensed, I set it into the Tv mode where I control the shutter speed. I had it @ 1/2500 of a second and the flash adjusted down.

Here, a Pseudogastromyzon cheni is caught in panicked take-off mode as a female Sewellia comes zooming in defending the food rock.



Close up of serious tuberculation.



Side view.



Here's the evil algae-defender in closeup.





Gastromyzon stellatus enjoying algae of another stone.



I've added this pic to the species profile.



I'm sure the fast shutter speed is yielding sharper detail so I'm going to do some more experimentation using this camera mode. I'm still using auto-focus.

Martin.

[Mad Duff]

Stunning picture Martin

The first picture is excellent

[Graeme Robson]

Superb!

Keep on experimenting Martin! We don't mind!

[Martin Thoene]

Funny thing with that pic Mark was that it was purely instinctive. I focussed on the cheni and then saw the Sewellia rushing in and just clicked. I was really suprised when I saw the cool pose of the cheni. That's one of the great things about fast shutter speeds. In the 'P' mode I normally use both fish would most probably have been blurs. They move SO fast as you know.

Martin.

[Jim Powers]

Simply amazing!
So I guess those stripey dudes are stirring up the pot a bit in the river tank. Are they dominating all the hillstreams?

[Martin Thoene]

Oh yeah Jim They're totally ruling the roost. The female pictured is defending the biggest algae stone from all-comers even though they ate it all off already.
I just took a load more pics including some good ones of the male. Tried Aperture priority setting this time. Changes the depth of field a lot. Edits will follow

Martin.

[Emma Turner]

Great 'experiments' Martin.

Emma

[Keith Wolcott]

Fantastic! I sure like the colors (greens and yellows) on the fifth picture.

[daspricey]

Wonderful shots as usual Martin!!!