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Posts for: Mike Adams
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Sep 19, 2019 10:15:56   #
How many members are interested in this technique? I am finding it very challenging, and would love to share experiences and tips.
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Sep 19, 2019 10:13:34   #
Ah, memories of The Cavern! In fact the curved ceiling really messed up the acoustics and the smoke level s was toxic.
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Sep 6, 2019 21:35:09   #
Milkweed: The Great Escape


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Aug 1, 2019 17:27:33   #
Cwilson341 wrote:
Neat shot, Mike. The processing g has given it a dreamy look.


Very little processing. The hazy appearance is because the light is emitted by the flower, rather than being reflected.
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Aug 1, 2019 10:09:14   #
This flowered a full month after the rest of the bush


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Jun 26, 2019 13:00:50   #
This is done a totally dark room, with UV lights shining on the subject. When some flowers absorb the UV they re-emit a visible wavelength, which is what is seen in the image.
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Jun 26, 2019 11:48:50   #
I am starting to use this technique. So far a LOT of technical challenges, but the results are really different. The original is 5500x3700 pixels


(Download)
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May 17, 2019 07:41:11   #
I am working on UV flourescence photography, and one of the bigger concerns is that most UV sources spill over into the visible range (>380nm). I can control some of this by using filters on the source, but I would like to add a filter on the camera that would effectively eliminate the remaining spillover. I am looking for a 62mm UV filter that provides almost total blocking below 400nm. Most don't show an absorption spectrum, so it is not clear how much transmission there is in the 380-400nm range.
If any readers know of such a filter, with specs, i would be very grateful.
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Mar 11, 2019 08:56:41   #
E.L.. Shapiro wrote:
What are you shooting and what result are you trying y to acheive? You may need a flash unit whit High Speed Synchronization capabilities. You may require an actual stroboscopic light source with variable frequencies.


Good point.
I shoot virtually 100% macro, using continuous LED lighting, and with no experience using flash (hence my ignorance and misinterpretation of the manual).
I am starting to work with UV fluorescence macro. The standard UV lights have two drawbacks: they have a limited UV range and all bleed heavily into the visible spectrum. So, I have bought a cheap flash, removed the filters that block UV and inserted UV bandpass filters, so now only wavelengths below 400 nm are emitted. The downside is that the final UV light flux is quite low, so the total fluorescence is also low. My hope was to force multiple, longer, flashes on every shutter release so increase the output.
Another option was to leave the shutter open and manually fire the flash: the problem with that is that the system has to be light-tight, since any extraneous light overpowers the fluorescence and so reaching in destroys the shot. My third choice is to set up for multiple exposures and merging them, and hope nothing moves!
Thanks for the input: I will keep working on it.
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Mar 10, 2019 16:17:58   #
PixelStan77 wrote:
Mike, The issue I believe is recycle time of three seconds at full power is the spec of the unit


I guess I misunderstood what the 1Hz setting means: I took it to be that it would fire at 1 second intervals. As is common with flash manuals, they are not always easy to interpret.
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Mar 10, 2019 15:39:41   #
Members

I am using a YONGNUO YN685 N GN60 2.4G on my Nikon 7100 and would like the flash to deliver a series of 0.25 sec flashes. On the flash unit I have it set to show MULTI 4 1Hz 1/4Sec duration. If I read this right it should deliver four 0.25 sec flashes, 1 second apart. In fact it delivers a very short, single, flash. If anyone is familiar with this flash, I would really appreciate help with getting the settings to provide what I need.

Many thanks
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Feb 26, 2019 19:42:07   #
GoofyNewfie wrote:
Are you still using Nikon equipment?
Which Odin transmitter do you have?
Which non-Phottix flash(es) do you have?
I’ve only used the first version of the Odin radio system and was very pleased with it using Nikon compatible receivers with my Nikon flashes.
If you want to keep costs down, the older receivers still work with the newer Odin II transmitter.
I think they may be a little smaller but hard to find
Here’s one https://www.ebay.com/itm/Phottix-Odin-TTL-Flash-Trigger-Receiver-for-Nikon-01F/153321734624?hash=item23b2b001e0:g:t68AAOSwX6RcJ~B5

Here is the Odin II receiver for Nikon:https://www.bhphotovideo.com/c/product/1219759-REG/phottix_ph89067_odin_ii_ttl_flash.html

I’ve not used the Odin II so I’m not sure what has changed, but I know the transmitter looks more user friendly.

You basically attach the receiver to your flash, put the flash in TTL mode and control it from the transmitter.
You’ll have to decide what channel/group to use, but I found it very intuitive.
Are you still using Nikon equipment? br Which Odin... (show quote)


I am using Yongnuo YN685 flashes and the original Odin. I have contacted Phottix directly, maybe they have a quick and cheap workaround, though I doubt it.
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Feb 26, 2019 15:47:45   #
Can the Phottix Odin trigger be used to control non-Phottix flashes off camera? If so, I would really appreciate a step-by-step guide to the settings for both the Odin and then flash unit.
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Jun 27, 2018 14:53:51   #
Maybe someone can identify this for me. It is growing in the lawn in CT. The plant is like a very small (<4 inches) bush with a single flower at the end of each branch.
The picture was shot at three different exposures, each as a series of 60 shots. Each exposure series was stacked and then the resultant stacks were combined into an HDR composite.
There actual size of the flower is ~1/4 inch across.


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Jun 3, 2018 20:23:18   #
Thanks for all the suggestions: I will check them out.
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