What is the 500 rule in photography?

Term: Description: The 500-Rule states that to obtain a clear image of stars without trails, take the number 500 and divided it by the focal length to get your exposure time. For example, a 20 mm lens would call for an exposure of about 25 seconds and theoretically, still obtain the stars without trails.

slrlounge.com - 500 Rule Definition - What is 500 Rule by SLR Lounge

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The 500 Rule

What is the 500 rule? The wider your lens, the longer your shutter speed can be before the stars start to move. The equation divides 500 by the focal length of your lens. For example, with a 50mm focal length, you’ll have 10 seconds before the stars move (500 divided by 50 equals 10). With a 24mm focal length, you’ll have 40 seconds before the stars move. Basically, the shutter speed limit changes based on your focal length.Here is a rough starting point to help practice: On a zoom lens: ISO = 6400, aperture = f/2.8, shutter speed = 15 seconds On a prime lens: ISO = 3200, aperture = f/1.4, shutter speed = 8 seconds The earth rotates at around its axis 1,000 miles per hour and hurtles around the Sun at about 70,000 miles per hour, yet the stars in the distance seem to creep idly by every night. When deciding on what maximum exposure time should be used these Astro bodies can be challenging for those trying it for the first time. For astronomical photos of the Moon’s surface, usually, the Looney-11 rule is a great starting point (f/11 and shutter speed to ISO setting). Similar to the Sunny-16 Rule, it allows for sharp well-exposed images without a light meter. Star trails can be a desired effect, but for images of the stars-as-dots, the 500-Rule should be followed. Provided you have the right equipment, it mostly comes down to tweaking your camera settings. A wide fast lens, such as the Tamron 15-30mm f/2.8, are fantastic for capturing images sharp clear images. Another useful tip is to avoid light pollution from major metropolitan areas. Sites like Dark Site Finder help you find the area closest to you that has the minimal amount of pollution, though sometimes it is hours away it can be worth it especially if you have never witnessed the full splendor that is the Milky Way.

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What foods turn men on?

Aphrodisiacs, named after the Greek goddess of love, Aphrodite, are foods said to spike your sexual desire. ... What foods are known aphrodisiacs? artichokes. asparagus. chocolate. figs. oysters. spicy chili peppers. strawberries. watermelon.

allinahealth.org - Aphrodisiacs: Foods That Put You In the Mood | Allina Health

Do certain foods put you in an amorous mood? Aphrodisiacs, named after the Greek goddess of love, Aphrodite, are foods said to spike your sexual desire. But do they really work?

What are aphrodisiacs?

Food science researchers have looked for connections that show certain foods lead to an increase in desire. While not necessarily the key to spicing up your love life, certain foods do have 'feel good' compounds, such as capsaicin in chili peppers that enhance bodily sensations or antioxidants in fruits like cherries, pomegranates, figs and strawberries that improve your blood flow. Others, like oysters, asparagus and figs simply resemble our more intimate body parts.

What foods are known aphrodisiacs?

Here are eight of the most common foods said to be known aphrodisiacs. Whether they do put you in the mood or not is up for debate:

artichokes

asparagus

chocolate

figs

oysters

spicy chili peppers

strawberries

watermelon

Experiencing an increased libido while eating these foods may be more of a placebo effect than anything else, but if a romantic dinner of oysters, asparagus and chocolate-dipped strawberries is on the menu for you and your sweetheart, then why not indulge? While it won’t hurt to try a few of these every now and then, a more balanced diet is probably better in the long run. A heart-healthy approach to food, such as the Mediterranean diet, combined with staying physically active is a winning combination to have you feeling your best, ready for whatever happens next

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