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Question: Question about DSLR settings!?
Okay I understand that 1" means one second right!?

So what does it mean when there's a number followed by small oo's!.

For example: After 1" it goes to 1!.3, 1!.6, 2!. 2!.5, 3, 4, 5, 6, 8, and 1o, 15, 2o, 25, 3o, 4o and so on!.!.!.

It goes all the way up to like 4ooo!.!.!.

On ISO it does the same thing!.!.!.
1oo, 125, 16o, 2oo and so on!.!.!.
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Best Answer - Chosen by Asker:
You're right about the 1" meaning one second!. After that, they are a full second or longer, like 1!.3"=1!.3 seconds, 1!.6"=1!.6 seconds, etc!. Usually they stop at 30 seconds and after that, they switch over to "B" or "Bulb" where you just hold the shutter button down as long as you want to keep the shutter open!.

Look again and look carefully!. You will notice that the 4000 designation does NOT have the " sign after it!. If a number is missing the " sign, it is representative of a fraction of a second!. So, when you see 4000, it really means 1/4000th of a second!. 2000=1/2000th of a second!. 125=1/125th of a second!.

Off the top of my head (and using your chart), you might find a whole series of numbers that look like this, from top to bottom:
4000, 2000, 1000, 500, 250, 125, 60, 30, 15, 8, 4, 2, 1", 1!.3", 1!.6", 2", 2!.5", 3", 4", 5", 6", 8", 10", 15", 20", 30", and bulb!. That means the fastest shutter speed is 1/4000th of a second and the slowest is 30 seconds!. Bulb lets you hold the shutter open as long as you want until the battery dies!.

You're right about ISO!. 100, 125, 160, 200, 250, 320, 400, etc, usually up to 1600 or higher!.

dms47949 must not have read your question fully, because his answer sounds like he has never seen the display inside a modern digital camera and that can't be the case if he's a professional!. I am sorry that he was dead wrong, but felt the need to have an aloof attitude towards you!. He just read your question to quickly - I am sure!.Www@QuestionHome@Com

CHAZ is correct!. 1" is a one second exposure, 1!.3 is one second plus one third of a second, 2!.5 is 2 and a half seconds, etc!. up to 30 or 60 seconds, depending on the camera- the shutter stays open longer as the number gets larger!. The small zeros are how they note fractions of a second, down to 1/4000th- the shutter closes faster as the number gets smaller!.

ISO- it's not the same thing, meaning that the zeros do not mean fractions, it simply means the sensor's light sensitivity is increasing, allowing you to use a faster shutter speed, for example in lower light!. It's based on film speed, with higher-speed film (800, 1600) being used for lower light conditions!. So at ISO 100, your sensor is less sensitive to light than at ISO 200, etc!. However, noise increases with higher ISO settings, which may or may not affect the outcome of your shot, depending on the situation!. An example would be a night skyline shot- you might want to increase the ISO to use a faster shutter speed, but there could be noise visible in the dark sky!. Newer high-end DSLRs can use pretty high ISOs without significant noise problems!. Of course, sometimes noise might be desirable as an artistic choice, like a gritty, abstract shot; that's where your control as a photographer comes into play!.

Easy!Www@QuestionHome@Com

old stuff; its a mathematical logrythmic progression!. on the lens its a guide to the ammount of light entering thru the lens!.

and goes 1!.8, 2, 3!.5,!.4, 5!.6, 8, 11, 16, 22,

film speed is measured from 0asa!.

0 1 2 4 8 16 32 64 100 125 250 400 800 1000 2000 3200!.


and then we get the shutter speeds!.

these go the other way!.!.!.

1000 500 250 125 60 30 15 8 4 2 1 and then its seconds and minutes!.!.!.

these numbers let us control what we see, and how we stop, or blurr teh images!.!.!. F16@ 60th F8@125, is the same as F4@250, F2@500!.!. the difference is in the depth of field

F2 is no DOF (12 inches maybe) bur F16 gives you about 40 feet DOF!.!. and its a judgement call!.!.!. experiment!.!.!. find a line of railings or fence, and shoot em at different apertures!.!.!. and see what happens!. Www@QuestionHome@Com

You have a couple of accurate answers above me, so I'll only add a link to my chart!. This shows shutter speeds, apertures and ISO's in 1/3 stop values!. It might be of some help to you!.
http://www!.flickr!.com/photos/samfeinstei!.!.!.Www@QuestionHome@Com

I don't know about the shutter speeds but on my Canon 40D the small zeros on the ISO are only active during Highlight Tone Priority!. If you turn Highlight Tone Priority off your zeros are the same size as the other numbers!.Www@QuestionHome@Com

You need to read a book on photography and basic camera settings!.

A DSLR is not unlike a film SLR other than the media!.

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those are 0s!.!.

25 would be 25th of a second!.

4000 would be 4000th of a second!.

1!.3 would be 1!.3 a second!.Www@QuestionHome@Com

Like the previous answer said, they are zeros!.Www@QuestionHome@Com

Those are zeros my dear!.!.!. as in 10, 20, 30, 40, and so on!.Www@QuestionHome@Com

what the first answer said,Www@QuestionHome@Com

1!.3, 1!.6, 2!.0, ect are aperture settings They are called f/stops!. The lower the number the wider the aperture is open!.

Shutter speeds would read 1/100 1/250, 1/160 ect 1/250 would 1!.250 th of a second!. How long the shutter stays open!.

iso is the same as film speed 100,200 bright sunny conditions
800 1600 for low light situations

Perhaps a sit down with the manual that came with the camera would be beneficial!? Www@QuestionHome@Com