speters wrote:
It is also known as the Basic Daylight Exposure (BDE)! As long as the sky is clear and the sun is at least 20% above the horizon you will get a consistent and predictable exposure (within one tenth of a stop)! That means if you change the camera's current ISO number into the closest shutter speed, your exposures will be correct (like ISO 400, then f/16 and 1/400s will be correct! If you use this as your starting point you will not need a lightmeter at all, you just step out the door, look at the surrounding and you can set your camera to a correct exposure, by simply evaluating the light, you just have to add or subtract one, or several f-stops from your BDE and you'll be fine! The Brookls Institute of Photography actually supplies a list of the most common scenarios and the amount of according f-stops!
It is also known as the Basic Daylight Exposure (B... (
show quote)
- but I prefer sun at least 30 degrees above horizon with no smoke, fog or other atmospheric impediments ......
blackest wrote:
moon is about 1/2 a degree in the sky, still quite small for a spot meter.
I tried metering the moon on several occasions. Didn't work. Too much dark around it. Someone pointed out to me that the moon is in full sun and needs that kind of exposure. I finally just began shooting 1/125, f11 and a little bracketing and got a lot of good shots that my meter said were going to be underexposed.
To my generous and courteous fellow members: Your replies are both beneficial and appreciated. I greatly respect your wide array of experience, knowledge and problem solving.
To my detractors: I don't normally discuss my medical misfortunes, but I happen to have a disability that makes use of a computer extremely difficult, and your obvious remedies nearly impossible. Your immediate unsubstantiated judgement of others has a name. It's called bigotry.
This, however, is neither immediate nor unsubstantiated: Screw you.
Actually...f/16 is for anyone 16 or younger on a very sunny day.
You reduce the number by 1/f stop every 3 years...otherwise the details look absolutely terrible and it makes everything look bad...A 90 year old grandmother is best captured at f/1.2.
...babies can take the full f/22 with no problem but be careful beginning at age 5. ;)
“Sunny 16” is not a rule or an approximation, it is the original definition of ASA (now called ISO). ASA was defined as the reciprocal of the shutter speed that at f/16 yielded the correct exposure on a bright sunny day. I think the original definition specified sea level, latitude, time-of-day and perhaps day of the year (solstice or equinox.) But it is true BY DEFINITION.
CHG_CANON wrote:
DJO - did you think to use google and see what you'll find?
Did you think to just answer the question?
Yes, we should always try to find the answer on our own. But not everyone does that and they’ll ask here.
Isn’t it easier, and fosters a more positive image for this group, to just answer the qualestion, rather than just come back with a snarky comment?
wdross
Loc: Castle Rock, Colorado
Mobius wrote:
“Sunny 16” is not a rule or an approximation, it is the original definition of ASA (now called ISO). ASA was defined as the reciprocal of the shutter speed that at f/16 yielded the correct exposure on a bright sunny day. I think the original definition specified sea level, latitude, time-of-day and perhaps day of the year (solstice or equinox.) But it is true BY DEFINITION.
Thanks, Mobius! That was something no one has ever mentioned to the best of my knowledge.
Reinaldokool wrote:
I tried metering the moon on several occasions. Didn't work. Too much dark around it. Someone pointed out to me that the moon is in full sun and needs that kind of exposure. I finally just began shooting 1/125, f11 and a little bracketing and got a lot of good shots that my meter said were going to be underexposed.
There is also a "looney 11 rule: for the moon.
In lunar photography, the Looney 11 rule (also known as the Looney f/11 rule) is a method of estimating correct exposures without a light meter.
With ISO 100 film / setting in the camera, one sets the aperture to f/11 and the shutter speed to 1/100 or 1/125 second (on some cameras 1/125 second is the available setting nearest to 1/100 second).
As with the F16 rule, it is a close starting point only, but could be right the first time.
Mobius wrote:
“Sunny 16” is not a rule or an approximation, it is the original definition of ASA (now called ISO). ASA was defined as the reciprocal of the shutter speed that at f/16 yielded the correct exposure on a bright sunny day. I think the original definition specified sea level, latitude, time-of-day and perhaps day of the year (solstice or equinox.) But it is true BY DEFINITION.
Can you point to documentation? I haven't been able to find any.
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rehess
Loc: South Bend, Indiana, USA
mas24 wrote:
On another post someone wanted to know what IS and VR meant. He also told that person to Google it. Now this one. I didn't know what GAS meant before I became a member on uhh. But, I guess I could have Googled that also. I suppose one definition would be "fuel for cars, or a stomach disorder."
When our older daughter was first becoming proficient at reading, my wife became tired of hearing the phrase "not fair", so she handed the daughter a Thesaurus saying "I want you to find another word to replace 'fair'!". Sometime later, the daughter came back saying "I don't understand what 'carnival' has to do with being fair". Twenty-five years later we still sometimes use the phrase "not carnival". Sometimes a reference isn't enough; sometimes talking things out with someone else helps.
People can learn a lot by answering these questions as well as asking. Some members are kind enough to upload cool pictorials, links and some great tangential points.
2-8-8 is great
F/11 for lunar
Sunny 16. Made me realize f stops are much different for film and digital.
Then again light metering was critical for film
Especially because you probably did not have a built in light meter and you can't adjust the iso as easilly.
Good thread thanks
Digital handles it for you.
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