can someone help with shutter speeds?

[emmabelle]

I've just started experimenting with shutter speeds and I was wondering on my camera the speeds go from 1/1600 of a second to 15 seconds. What I'm not sure of is the range of speeds that are between 1/4 and 1". After 1/4 the range goes "3, "4, "5, "6, "8 and then 1". I'm assuming that 1/4 is a quarter of a second and 1" is one second, but I can't figure out what the numbers between them are.

 

[handicap18]

I've just started experimenting with shutter speeds and I was wondering on my camera the speeds go from 1/1600 of a second to 15 seconds. What I'm not sure of is the range of speeds that are between 1/4 and 1". After 1/4 the range goes "3, "4, "5, "6, "8 and then 1". I'm assuming that 1/4 is a quarter of a second and 1" is one second, but I can't figure out what the numbers between them are.

1/4 and 1" are "full stops" There is also 1/2 that is a full stop in between those 2.

Bold is the full stop. In between are 1/3 stops.

1/15
1/13
1/10
1/8
1/6
1/5
1/4
1/3
1/2.5
1/2
1/1.6
1/1.3
1

 

[DBL101]

Taken from "A Short Course in Canon EOS 40D Photography"
Speeds faster than 1 second are fractions of a second. A quotation mark indicates a decimal point. At shutter speeds of 1/4 second and higher, only the denominator is shown.

125___.0080__1/125
60____.0167__1/60
30____.0333__1/30
15____.0667__1/15
8_____.1250__1/8
4_____.2500__1/4
"3____.3
"4____.4
"5____.5
"6____.6
"8____.8
1"____1
1"3___1.3
1"6___1.6
2"____2

 

[emmabelle]

thanks guys, I understand now!