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A Picture To Show You Clearly The Effects of Aperture, Shutter Speed and ISO On Images

A Picture To Show You Clearly The Effects of Aperture, Shutter Speed and ISO On Images

photography

    Want to capture excellent photos? Then you need to understand three things — the aperture, the shutter speed, and the ISO.

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    The aperture controls light that passes through your camera lens. If you shoot with the aperture adjusted to the smallest opening, the smallest amount of light is allowed to enter. Let’s say, you need to take a picture in an environment that’s too bright — how do you fix that? Simple — just choose a smaller aperture. The aperture’s sizes are measured by f-stops. A higher f-stop means a smaller aperture hole while a lower f-stop means a bigger aperture opening.

    Now, the shutter speed. It’s the duration of time a camera shutter is open to allow light into the camera sensor. Shutter speeds are usually measured in fractions of a second. Fast shutter speeds allow less light into the camera sensor and are used for high-light and daytime photography while slow shutter speeds allow more light into the camera sensor. Obviously, slow shutter speeds are ideal for nighttime photography.

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    Finally, the ISO. ISO is all about the sensitivity level of your camera to available light. Usually, it’s measured by numbers. A lower number represents lower sensitivity to light while higher numbers mean heightened sensitivity. The drawback in using increased sensitivity is that it produces noisier images. Simply put, you end up with grainy pictures if you use high ISO.

    How do you take properly exposed photos, then? Those that are not too dark or too bright. The three – Shutter Speed, Aperture, and ISO – need to play together well. Let’s say it’s high noon. Of course, you have plenty of sunlight. If your camera aperture is very small you block most of the light. It means the camera sensor needs a longer time to gather light. Now, for the sensor to collect enough light, the shutter has to stay open longer. In other words, you need a slower shutter speed.

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    Look at the diagram featured here. From the top, the first level represents aperture sizes, the second level represents shutter speeds, and the third level represents levels of ISO.

    Diagram: New Mobile Life

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    Sources: PHOTOGRAPHY BASICS #2: APERTURE, SHUTTER SPEED, AND ISO via IMPROVE Photography

      Basic Photo Tips: Aperture, Shutter Speed, and ISO via Photo.net

    Featured photo credit: Aperture, Shutter Speed and ISO via newmobilelife.com

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    Anthony Dejolde

    TV/Radio personality who educates his audience on entrepreneurship, productivity, and leadership.

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    Last Updated on August 12, 2019

    12 Best Foods That Improve Memory and Brain Health

    12 Best Foods That Improve Memory and Brain Health

    Nutrition plays a vital role in brain function and staying sharp into the golden years. Personally, my husband is going through medical school, which is like a daily mental marathon. Like any good wife, I am always looking for things that will boost his memory fortitude so he does his best in school.

    But you don’t have to be a med student to appreciate better brainiac brilliance. If you combine certain foods with good hydration, proper sleep and exercise, you may just rival Einstein and have a great memory in no time.

    I’m going to reveal the list of foods coming out of the kitchen that can improve your memory and make you smarter.

    Here are 12 best brain foods that improve memory and brain power:

    1. Nuts

    The American Journal of Epidemiology published a study linking higher intakes of vitamin E with the prevention on cognitive decline.[1]

    Nuts like walnuts and almonds (along with other great foods like avocados) are a great source of vitamin E.

    Cashews and sunflower seeds also contain an amino acid that reduces stress by boosting serotonin levels.

    Walnuts even resemble the brain, just in case you forget the correlation, and are a great source of omega 3 fatty acids, which also improve your mental magnitude.

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    2. Blueberries

    Shown in studies at Tuffs University to benefit both short-term memory and coordination, blueberries pack quite a punch in a tiny blue package.[2]

    When compared to other fruits and veggies, blueberries were found to have the highest amount of antioxidants (especially flavonoids), but strawberries, raspberries, and blackberries are also full of brain benefits.

    3. Tomatoes

    Tomatoes are packed full of the antioxidant lycopene, which has shown to help protect against free-radical damage most notably seen in dementia patients.

    4. Broccoli

    While all green veggies are important and rich in antioxidants and vitamin C, broccoli is a superfood even among these healthy choices.

    Since your brain uses so much fuel (it’s only 3% of your body weight but uses up to 17% of your energy), it is more vulnerable to free-radical damage and antioxidants help eliminate this threat.

    Broccoli is packed full of antioxidants, is well-known as a powerful cancer fighter and is also full of vitamin K, which is known to enhance cognitive function.

    5. Foods Rich in Essential Fatty Acids

    Your brain is the fattest organ (not counting the skin) in the human body, and is composed of 60% fat. That means that your brain needs essential fatty acids like DHA and EPA to repair and build up synapses associated with memory.

    The body does not naturally produce essential fatty acids so we must get them in our diet.

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    Eggs, flax, and oily fish like salmon, sardines, mackerel and herring are great natural sources of these powerful fatty acids. Eggs also contain choline, which is a necessary building block for the neurotransmitter acetylcholine, to help you recall information and concentrate.

    6. Soy

    Soy, along with many other whole foods mentioned here, are full of proteins that trigger neurotransmitters associated with memory.

    Soy protein isolate is a concentrated form of the protein that can be found in powder, liquid, or supplement form.

    Soy is valuable for improving memory and mental flexibility, so pour soy milk over your cereal and enjoy the benefits.

    7. Dark Chocolate

    When it comes to chocolate, the darker the better. Try to aim for at least 70% cocoa. This yummy desert is rich in flavanol antioxidants which increase blood flow to the brain and shield brain cells from aging.

    Take a look at this article if you want to know more benefits of dark chocolate: 15 Surprising and Science-Backed Health Effects of Dark Chocolate

    8. Foods Rich in Vitamins: B vitamins, Folic Acid, Iron

    Some great foods to obtain brain-boosting B vitamins, folic acid and iron are kale, chard, spinach and other dark leafy greens.

    B6, B12 and folic acid can reduce levels of homocysteine in the blood. Homocysteine increases are found in patients with cognitive impairment like Alzheimer’s, and high risk of stroke.

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    Studies showed when a group of elderly patients with mild cognitive impairment were given high doses of B6, B12, and folic acid, there was significant reduction in brain shrinkage compared to a similar placebo group.[3]

    Other sources of B vitamins are liver, eggs, soybeans, lentils and green beans. Iron also helps accelerate brain function by carrying oxygen. If your brain doesn’t get enough oxygen, it can slow down and people can experience difficulty concentrating, diminished intellect, and a shorter attention span.

    To get more iron in your diet, eat lean meats, beans, and iron-fortified cereals. Vitamin C helps in iron absorption, so don’t forget the fruits!

    9. Foods Rich in Zinc

    Zinc has constantly demonstrated its importance as a powerful nutrient in memory building and thinking. This mineral regulates communications between neurons and the hippocampus.

    Zinc is deposited within nerve cells, with the highest concentrations found in the hippocampus, the part of the brain responsible for higher learning function and memory.

    Some great sources of zinc are pumpkin seeds, liver, nuts, and peas.

    10. Gingko Biloba

    This herb has been utilized for centuries in eastern culture and is best known for its memory boosting brawn.

    It can increase blood flow in the brain by dilating vessels, increasing oxygen supply and removing free radicals.

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    However, don’t expect results overnight: this may take a few weeks to build up in your system before you see improvements.

    11. Green and Black Tea

    Studies have shown that both green and black tea prevent the breakdown of acetylcholine—a key chemical involved in memory and lacking in Alzheimer’s patients.

    Both teas appear to have the same affect on Alzheimer’s disease as many drugs utilized to combat the illness, but green tea wins out as its affects last a full week versus black tea which only lasts the day.

    Find out more about green tea here: 11 Health Benefits of Green Tea (+ How to Drink It for Maximum Benefits)

    12. Sage and Rosemary

    Both of these powerful herbs have been shown to increase memory and mental clarity, and alleviate mental fatigue in studies.

    Try to enjoy these savory herbs in your favorite dishes.

    When it comes to mental magnitude, eating smart can really make you smarter. Try to implement more of these readily available nutrients and see just how brainy you can be!

    More About Boosting Brain Power

    Featured photo credit: Pexels via pexels.com

    Reference

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