Understanding Exposure numbers
Jan 31, 2012 11:21:45 #
I finally achieved this effect of slow motion of the river. Trouble is I don't know how to recreate it because Idon't know how to read the exposure number. The books donsn't translate it.
This photo was taken at 1/8 exposure.Trouble is the meter doesn't use fractions. They use whole numbers on my Nikon D7000 Like 25,40,125,4 etc.
What is 1/8 as a whole number?
Thanks for your help.
This photo was taken at 1/8 exposure.Trouble is the meter doesn't use fractions. They use whole numbers on my Nikon D7000 Like 25,40,125,4 etc.
What is 1/8 as a whole number?
Thanks for your help.
Jan 31, 2012 11:31:05 #
Exposure is controlled by several pieces.
Shutter speed is measured in seconds or parts of a second.
Ie 1/8 is 1 eighth of a second. When you see a whole number put it in a fraction 1/?.
Aperture which is the opening in the lens that controls the amount of light entering through the lens and is measured in stops. Ie f/4 or f/5.6.
ISO is the sensitivity of the sensor to light. Ie 100 up to 3200 and beyond.
It's the combination of these settings that determine exposure in a particular photo setting.
Shutter speed is measured in seconds or parts of a second.
Ie 1/8 is 1 eighth of a second. When you see a whole number put it in a fraction 1/?.
Aperture which is the opening in the lens that controls the amount of light entering through the lens and is measured in stops. Ie f/4 or f/5.6.
ISO is the sensitivity of the sensor to light. Ie 100 up to 3200 and beyond.
It's the combination of these settings that determine exposure in a particular photo setting.
Jan 31, 2012 11:34:19 #
Thanks I understand the combination,that 1/8 is one eighth of a sec. My question is what is 1/8 on the camera dial or screen. Is it 124, 60. 4 or what.
thanks
thanks
Jan 31, 2012 11:36:08 #
Jan 31, 2012 11:37:40 #
200 = 1/200 of a second
8 = 1/8 of a second
1" = 1 whole second
2"5 = 2.5 seconds
30" = 30 seconds.
so when you see a whole number (X) and nothing else that is the 1/xx of a second. When you see X plus the " then it's a whole second.
8 = 1/8 of a second
1" = 1 whole second
2"5 = 2.5 seconds
30" = 30 seconds.
so when you see a whole number (X) and nothing else that is the 1/xx of a second. When you see X plus the " then it's a whole second.
Jan 31, 2012 11:47:17 #
MWAC wrote:
200 = 1/200 of a second
8 = 1/8 of a second
1" = 1 whole second
2"5 = 2.5 seconds
30" = 30 seconds.
so when you see a whole number (X) and nothing else that is the 1/xx of a second. When you see X plus the " then it's a whole second.
8 = 1/8 of a second
1" = 1 whole second
2"5 = 2.5 seconds
30" = 30 seconds.
so when you see a whole number (X) and nothing else that is the 1/xx of a second. When you see X plus the " then it's a whole second.
Thank you for the extra info. I figured she has a Nikon and I don't know what they put on their display. I was trying to stay neutral and not let my Canon mind go too far. :P
Jan 31, 2012 11:58:37 #
Ohhh, OK Thanks!
Now if i want a slow exposure like the sky at night... trying to get moving sky/stars,
would I use say a 30 sec exposure?
Now if i want a slow exposure like the sky at night... trying to get moving sky/stars,
would I use say a 30 sec exposure?
Jan 31, 2012 12:02:40 #
rexxal wrote:
Ohhh, OK Thanks!
Now if i want a slow exposure like the sky at night... trying to get moving sky/stars,
would I use say a 30 sec exposure?
Now if i want a slow exposure like the sky at night... trying to get moving sky/stars,
would I use say a 30 sec exposure?
Yes .. That will create some movement in the stars.
Another setting is "Bulb" which will keep the shutter open as long as the button is held down.
I suggest a tripod and an external shutter release.
Jan 31, 2012 12:08:58 #
docrob
Loc: Durango, Colorado
rexxal wrote:
I finally achieved this effect of slow motion of the river. Trouble is I don't know how to recreate it because Idon't know how to read the exposure number. The books donsn't translate it.
This photo was taken at 1/8 exposure.Trouble is the meter doesn't use fractions. They use whole numbers on my Nikon D7000 Like 25,40,125,4 etc.
What is 1/8 as a whole number?
Thanks for your help.
This photo was taken at 1/8 exposure.Trouble is the meter doesn't use fractions. They use whole numbers on my Nikon D7000 Like 25,40,125,4 etc.
What is 1/8 as a whole number?
Thanks for your help.
it is 1/8 one eighth of a second........please tell me you are not an accountant for the IRS????
Feb 1, 2012 07:29:22 #
rexxal wrote:
Ohhh, OK Thanks!
Now if i want a slow exposure like the sky at night... trying to get moving sky/stars,
would I use say a 30 sec exposure?
Now if i want a slow exposure like the sky at night... trying to get moving sky/stars,
would I use say a 30 sec exposure?
To shoot star trails, you must slow the shutter to 15" or more.....to shoot star points, you must increase the shutter speed faster than 15" seconds.
I put this link up ...it is a good primer on how to shoot Night Photography
http://edoverstreet.com/np.pdf
Feb 1, 2012 07:47:40 #
nikonshooter wrote:
I put this link up ...it is a good primer on how to shoot Night Photography
http://edoverstreet.com/np.pdf
http://edoverstreet.com/np.pdf
TERIFFIC read! Thanks for sharing! :thumbup:
At the end of that presentation is a reference to a book by Lance Keimig: "Night Photography: Finding Your Way In The Dark"
Amazon $52, eBay $27
Does anyone have this book and recommend it?
Feb 1, 2012 07:57:51 #
AVarley wrote:
TERIFFIC read! Thanks for sharing! :thumbup:
At the end of that presentation is a reference to a book by Lance Keimig: "Night Photography: Finding Your Way In The Dark"
Amazon $52, eBay $27
Does anyone have this book and recommend it?
nikonshooter wrote:
I put this link up ...it is a good primer on how to shoot Night Photography
http://edoverstreet.com/np.pdf
http://edoverstreet.com/np.pdf
TERIFFIC read! Thanks for sharing! :thumbup:
At the end of that presentation is a reference to a book by Lance Keimig: "Night Photography: Finding Your Way In The Dark"
Amazon $52, eBay $27
Does anyone have this book and recommend it?
Yep! ...and I would recommend it. They were at Photoshop World this year....it got it there.
Feb 1, 2012 08:01:51 #
Read the metadata, that should tell you everthing you are looking for. I'm at work or I would Dload your pic and read it off for you. I'm sure some other kind soul here could help you out.
Feb 1, 2012 08:04:08 #
nikonshooter wrote:
Yep! ...and I would recommend it. They were at Photoshop World this year....it got it there.
Yep! ...and I would recommend it. They were at Photoshop World this year....it got it there.
Great! I just purchased ... can't wait to dive into it!
Feb 1, 2012 08:29:22 #
nikonshooter wrote:
quote=AVarley quote=nikonshooter I put this link... (show quote)
Nikonshooter and AVarley, thanks for sharing this info. I needed this and am going to order the book right now. :thumbup:
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