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Anonymous Posted on Sep 10, 2012

What are the disadvantages of white gas? - Coleman Camping, Backpacking & Hiking

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  • Posted on Sep 10, 2012
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The two main disadvantages are that a priming process usually required and the spilled fuel is very flammable.

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My wii is black and white. I am technically disadvantaged

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What advantages and disadvantages does a kerosene stove have

Kerosene may be hard to get these days, and I think it will be harder to light than a white-gas stove.
Some people say it can give off an oily smell and they even taste it, although there are probable modern stoves that do not do this.
If you are travelling in some 3rd world areas, kerosene may be the only fuel available.
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What are the disadvantages of unleaded auto gas?

The main disadvantages are that priming is usually required, spilled fuel very flammable; gas additives can lead to clogging.

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What are the disadvantages of glass desks?

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Jul 25, 2012 • Furniture
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I am a surgeon when I take pictures of muscle or bloody objects the red color seems to melt and the red is overly saturated and all sharpness and definition to the photo is lost usually taken with a...

The Fuji S2 sensor is noted for this red sensitivity. Here's a few different approaches to getting the shot with the S2, all of which require some experimentation.

1. Set the "Color" and "Tone" Function options to "ORG". Underexpose the shot. Progressively change the exposure compensation downward until when checking the histogram, the red channel does not show saturation at the high end. Advantages: this is the simplest approach to getting the picture. Disadvantages: the S2 already had a fairly limited dynamic range, and this will make things worse for the parts of the photo that are not red. For the surgical setting and use of a ringflash, this may not be much of a disadvantage, since a lot of the stuff of interest will be red, and ringflash illumination generally is of lower contrast than directional lighting.

2. Set the "Color" and "Tone" Function options to "ORG". Use a custom white balance. The idea here is to have the camera adjust the red channel sensitivity itself, and leave the blue and green channels alone. To do this, start with several sheets of white paper and a red or pink marker or highlighter. Scribble with the marker across a sheet, then use that to set a custom white balance. Take a test shot of the red stuff that has been problematic, and see whether the histogram for the red channel shows that there is no saturation at the high end. Repeat this with progressively more red or pink on each sheet used to set the custom white balance until you find the custom white balance that takes enough of the edge off the red channel response. Alternative: I just tried out making a gradient across an 8.5x11" sheet of paper going from white to about 30% red saturation. I can set more or less red adjustment in a custom white balance just by pointing the camera at different parts of the page. This seems to work OK for me. Advantage: can allow the full dynamic range of the sensor to be used. Disadvantages: the experimentation period is likely to take a while to get the best results, and the final images are unlikely to look completely natural.

3. Set the "Color" Function option to "B/W". Use a green or cyan filter on the lens to cut the amount that the red color channel contributes to the final image. Advantages: this is fairly simple as an approach. A similar post-processing technique can be applied to the photos that you already have, by nulling out the red channel contribution and desaturating the blue and green channels to produce a grayscale image. Disadvantages: you lose the color information entirely. Since much of what you want information about is colored red anyway, the organs are likely to appear quite dark when only taking the blue and green channel contributions to the image.

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Best setting for indoor

There are three possible solutions for you:

1. Just use the Daylight (direct sun) white balance setting. Electronic flash is typically close to the direct sunlight setting for white balance. Advantages: it is simple. Disadvantages: if you are balancing electronic flash with ambient light, you are likely to have an odd mixture of lighting, with the ambient lighting tending toward red (if incandescent) or green (if flourescent).

2. Get a Wratten 85 color correction gel that you can cover your flash's head with, and use the Tungsten white balance setting. This will bring your flash output into line with existing incandescent light sources. Advantages: almost as simple as (1), and allows you to come close to matching a common indoor lighting situation. This will produce more natural-looking environmental shots if you balance the flash and incandescent ambient light contributions to the exposure. Disadvantages: large gel filters get expensive. You may be able to obtain something close to the Wratten 85 color correction filter from a theater supply house more cheaply. Roscolux #3408 is slightly weaker and #3411 is slightly stronger than the Wratten 85. If you have to balance flash with flourescent light sources, try a Roscolux in the cyan series leading to #4360. Some experimentation is likely to be required. The place I looked online offered the Roscolux in 20x24" sheets for about $7 per sheet, a bargain compared to the optical-grade Wratten filters.

3. Set a custom white balance. This is not too difficult, and it will definitely provide the best approximation to your desired white balance that you will obtain in the field. Advantages: this will allow you to reproduce white accurately even with mixed lighting sources. Combine with gel over flash of (2) for the very best approach to balanced flash/incandescent lighting situations. Disadvantages: requires a "white" target (can be a neutral gray photo card, for example) and some additional time before a photo session.

You can obtain some striking effects by purposely mixing color temperature light sources. But day in and day out, getting a balanced shot is a skill that it pays to cultivate.
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Regarding gas Barbeque and charcoal Barbeque

It depends on your preferance

Charcoal most say it gives what your cooking better flavor but the disadvantage is waiting for the coals to get hot and longer cooking time due to less heat.

Gas quick cooking time, quick warmup time the disadvantages scrafice some of the flavor, unless you buy a gas grill set up to smoke it is almost impossible to use a conventional gas grill for smoking, and also you have to have enough gas to cook completly or have a second tank in case you run out.

Hope this helps Ya
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