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Oct 9, 2013 11:53:37   #
country Loc: back woods
 
took these two photos, but changed settings... one is ok, the other not so.. im trying to learn to use manual more, although I did leave iso on auto.. the one that is not so sharp and has noise( I think), is that because the iso is much higher ?.. is it better to have iso as low as possible ?.. the only change I made was shutter speed, which changed iso.. any advice will be appreciated as I am still a work in progress... thanks...





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Oct 9, 2013 11:58:22   #
Wendy2 Loc: California
 
I think what you are seeing is blown out highlights, not noise. They are both over exposed, but the 2nd one more so. The 2nd one was a higher ISO, right?

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Oct 9, 2013 12:14:56   #
country Loc: back woods
 
Wendy2 wrote:
I think what you are seeing is blown out highlights, not noise. They are both over exposed, but the 2nd one more so. The 2nd one was a higher ISO, right?


no, actually , the 2nd one is iso at 100, and is the sharper pic... download them and look at them close up and you will see what I mean...

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Oct 9, 2013 12:15:51   #
Wendy2 Loc: California
 
country wrote:
no, actually , the 2nd one is iso at 100, and is the sharper pic... download them and look at them close up and you will see what I mean...


But you said that the iso changed when you changed your shutter speed.

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Oct 9, 2013 12:16:33   #
hb3 Loc: Texas
 
Both are a bit blown out by the intense light in the upper left half of the photo...when I inspect both DLs and magnify the red section of the bridge, there is much more noise on the first image than on the second....

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Oct 9, 2013 12:16:52   #
RedIris Loc: MN, USA
 
oops.

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Oct 9, 2013 12:20:49   #
country Loc: back woods
 
Wendy2 wrote:
But you said that the iso changed when you changed your shutter speed.


it did because I had iso on auto...

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Oct 9, 2013 12:22:35   #
Wendy2 Loc: California
 
country wrote:
it did because I had iso on auto...


So the ISO is different, right?

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Oct 9, 2013 12:23:41   #
country Loc: back woods
 
Wendy2 wrote:
So the ISO is different, right?


yes...

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Oct 9, 2013 12:26:03   #
Wendy2 Loc: California
 
What is the ISO on the first one? I meant to say the 2nd one was a lower ISO. So since it is a lower ISO, it is more over exposed.

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Oct 9, 2013 12:27:41   #
country Loc: back woods
 
hb3 wrote:
Both are a bit blown out by the intense light in the upper left half of the photo...when I inspect both DLs and magnify the red section of the bridge, there is much more noise on the first image than on the second....


what settings should be different to offset the intense light that is causing it to be blown out... or maybe a polarizing filter??.. thanks...

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Oct 9, 2013 12:30:05   #
country Loc: back woods
 
Wendy2 wrote:
What is the ISO on the first one? I meant to say the 2nd one was a lower ISO. So since it is a lower ISO, it is more over exposed.


first one is iso 6400...

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Oct 9, 2013 12:31:33   #
jeep_daddy Loc: Prescott AZ
 
country wrote:
took these two photos, but changed settings... one is ok, the other not so.. im trying to learn to use manual more, although I did leave iso on auto.. the one that is not so sharp and has noise( I think), is that because the iso is much higher ?.. is it better to have iso as low as possible ?.. the only change I made was shutter speed, which changed iso.. any advice will be appreciated as I am still a work in progress... thanks...


Both images seem to be in focus, but a little over exposed (as Wendy said too). You just need to use a setting that is between the two settings that you tried. F/16 is not a bad aperture setting but the ISO 6400 is too high and viewed at 100% has noise. The other image has no noise but I don't think I'd use 1/5th of a second exposure. Try to get your shutter at around 1/60th of a second and f/stop at f/11-f/16 or so. Keep your ISO as low as possible. For a day time image like this about ISO100-200 is good.

So if you do the math, your image is about a stop over exposed. So if you had shot this at f/16 1/400 and ISO 3200 you'd have a better exposure. But the image would be even better if you could adjust the shutter and ISO.

1/200 ISO 1600
1/100 ISO 800
1/50 ISO 400 and you are good to go.

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Oct 9, 2013 12:31:43   #
country Loc: back woods
 
Wendy2 wrote:
What is the ISO on the first one? I meant to say the 2nd one was a lower ISO. So since it is a lower ISO, it is more over exposed.


so a lower iso tends to over expose?

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Oct 9, 2013 12:35:17   #
country Loc: back woods
 
jeep_daddy wrote:
Both images seem to be in focus, but a little over exposed (as Wendy said too). You just need to use a setting that is between the two settings that you tried. F/16 is not a bad aperture setting but the ISO 6400 is too high and viewed at 100% has noise. The other image has no noise but I don't think I'd use 1/5th of a second exposure. Try to get your shutter at around 1/60th of a second and f/stop at f/11-f/16 or so. Keep your ISO as low as possible. For a day time image like this about ISO100-200 is good.

So if you do the math, your image is about a stop over exposed. So if you had shot this at f/16 1/400 and ISO 3200 you'd have a better exposure. But the image would be even better if you could adjust the shutter and ISO.

1/200 ISO 1600
1/100 ISO 800
1/50 ISO 400 and you are good to go.
Both images seem to be in focus, but a little over... (show quote)


guess I need to take it off auto iso, so I can control that as well...

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