Tuesday, January 21, 2014

Is an aqarium heater ok to place in the Triops container that came with the kit?

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Becky


I purchased the Triassic Triops Deluxe kit.
The heater would assure the right temp. for the Triops, as I don't have a lamp. The only thing I have is a 5 gallon aquarium and it has the growing light in the hood, and it's next to my computer monitor. Would both be sufficient lighting for the Triops to grow, and food value (algae) wise?
The kit comes with food. I read they also need the algae as well.



Answer
yeah, putting them in a 5 gallon aquarium with a heater and light hood, is top of the line triop care lol... just make sure there isn't any power filters that will harm the eggs or baby triops. i have about 10 triops in my 55 gallon aquarium kinda weird but adds exotics to my aquarium. fyi they are hard to hatch

What kind of photoshop tools for accurate skin tones/colours?




dikaiosune


presume the following

- shooting raw
- colour managed and monitor profiled
- I did not use one of those colour targets I've seen in catalogs
- i presume I need to mask to preserve the colour tones of particular items while I augment the skin colours.



Answer
Ok, here we go, hopefully you will actually come back and review your answers so all this typing will not be for nothing.

Ideally, you SHOULD be using some form of white balance tool with your RAW software. The WhiBal is the best I have ever found. Please DO look it up and consider using it in the future. It makes life much easier, not to mention makes for better photos!

But to your question, in Photoshop, you need to have the Info Window open. Pick the eyedropper tool. Hover over your photo in the skin areas. You will see color values in the RGB (monitor display colors) and in the Cyan, Magenta, Yellow, and Black (print ink colors).

Ignore RGB because having proper skin tones in more important with print output.

Here is the main thing you need to know. Never let the yellow % fall below the magenta % on anyone's skin unless you are trying to show sunburn.

Here are some reasonable magenta and yellow values:
A fair skinned pinkish baby could be as light as 15% magenta, 16% yellow. Most caucasians fall in the range of 5 - 20% more yellow than magenta. A fair skinned caucasian adult could be as low as 20% magenta, 25% yellow. A bronzed caucasian could be as high as 45% magenta, 62%yellow. Asians and hispanics have typically 10 - 20% higher yellow than magenta.

In any case, when magenta starts getting towards 50%, beware of the well done look!

On pleasing photos, cyan usually falls between 30% to 50% of the magenta value. Less than 30% magenta makes sunburn, more than 50% of magenta makes a person ghostly blue.

To do some fixing in Photoshop:
Go to Image - Adjustments - Levels. In the dialog, choose the Blue channel from the pull down list. For input levels, make the center one 0.90. This will warm up the image. If you have a really red image, you could go to 0.85. Click ok.

Go to Image - Adjustments - Hue / Saturation. Choose the Red channel from the pull down list. Shift the middle saturation slider to about -7 to -10.

That will pretty much take care of any problems unless you have something just way out in left field. In that case, you will have to work with the various color levels in the Hue / Saturation dialog, but at least you will have a idea of what you are wanting to see up in the Info window.

The above information is not all off the top of my head, but rather has been taken from reading and trying lots of color correction information found on the web and in books.

Again, in the future use a WhiBal tool for this kind of thing to make everyone happier! :-)

steve




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Title Post: Is an aqarium heater ok to place in the Triops container that came with the kit?
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