05-10-2012, 04:23 AM
[quote name='Xastoul' timestamp='1336622870' post='18089']
On my D5000 there is 3 setting lower than 200: low 03. ,low 0.7 and low 1. ( in that order)
I not sure why but the .7 setting is loer than .3... kind of strange. but the low 1 seem to give about 3 stop.
I'm happy that this was enough for what I was shooting.
But I see the limit of low iso.
thank
[/quote]
As far as I know low 1 corresponds to iso 100, low 0.7 and 0.3 correspond to values between 100 and 200: something like 125 and 175 respectively (I don't remember exactly). So, on D5000 the lowest iso is also 100, just 1 stop from the base iso 200 (low 1: 1 stop from 200; low 0.7: 2/3 stop from 200; 0.3: 1/3 stop from 200). If you are serious about long-time exposure in bright light, the low iso is definitely not enough.
In addition, usually low iso cannot be applied to a scene with high contrast since it tends to cut off the highlight.
Frank
On my D5000 there is 3 setting lower than 200: low 03. ,low 0.7 and low 1. ( in that order)
I not sure why but the .7 setting is loer than .3... kind of strange. but the low 1 seem to give about 3 stop.
I'm happy that this was enough for what I was shooting.
But I see the limit of low iso.
thank
[/quote]
As far as I know low 1 corresponds to iso 100, low 0.7 and 0.3 correspond to values between 100 and 200: something like 125 and 175 respectively (I don't remember exactly). So, on D5000 the lowest iso is also 100, just 1 stop from the base iso 200 (low 1: 1 stop from 200; low 0.7: 2/3 stop from 200; 0.3: 1/3 stop from 200). If you are serious about long-time exposure in bright light, the low iso is definitely not enough.
In addition, usually low iso cannot be applied to a scene with high contrast since it tends to cut off the highlight.
Frank