, thanks for your comments :)
I'll have to check out this canon download.
Is it safe? No problems with your camera?
have said CHDK
don't modify BIOS of the camera, it's loads from the memory card and exists only in operative memory. so no changes to camera's software doesn't occur. it's 100% safe. the only problem which can appear at entering too short exposure (<1/5000 sec) when this value borders technical possibility of camera's shutter, but it's depends on model. anyway i don't think that such extremly short exposures you ever need :) perhaps only to shot solar protuberances :)
the "pins" continue to grow and here some pics in the dark. as you see bioluminescence is irregular. As it seemed to me it depends not only from arrival of the oxygen, but also from time of the day.
And here is very interesting article "The Role of Superoxide Dismutase in Regulating the Light Emission of Luminescent Fungi"
by Osamu Shimomura:
The Role of Superoxide Dismutase in Regulating the Light Emission of Luminescent Fungi
Marine Biological Laboratory Woods Hole, MA 02543, USA
Luminescent fungi spontaneously emit light during certain stages of their life cycles. Most of them are luminous during a part of their mycelial stage, but not many of them are luminous when they form fruiting bodies. In the case of Panellus stipticus, both the mycelium and the fruiting body can be luminous, and the emission of light takes place when its luciferin is aerobically oxidized in the presence of the superoxide anion (O2) and a cationic surfactant. It is highly likely that the luminescence reactions of all kinds of luminous fungi are basically the same as that of P. stipticus. In order to determine the factor that makes a fungus luminous or non-luminous, we studied the relations between the light emission of fungi at various growth stages and the contents of luciferin, its precursor, superoxide dismutase (SOD), and catalase, on six species of luminescent fungi: Armillariella mellea, Mycena citricolor, Mycena lux-coeli, Omphlotus olearious, Panellus stipticus, and Pleurotus japonicus. The analysis of the data suggested that the fungi generally contain the components necessary for light emission, but also contain very large amounts of SOD which destroy O2–. If an appreciable amount of SOD is distributed at the site of light emission, the luminescence reaction is prevented. For the reaction to take place, it is essential that the SOD activity at the site is sufficiently low or inhibited, despite the high content of SOD in the whole tissue. Thus, the level of SOD activity at the site of light emission appears to be a limiting factor in regulating the luminescence of fungi.
Edited by the_chosen_one, 09 March 2014 - 02:39 PM.