High ISO using settings use to use on D5100

rockypaul

New member
Since upgrading from a D5100 to the really nice D7100 I notice that pictures I have been taking are using high ISO even though I have set the camera up as I did on the D5100. Using AUTO ISO with a low of 100 to a high of 6400, and a shutter speed of 1/60. These worked well on the D5100 but the superior D7100 is having pictures with High ISO 2800 - 6400 where as I was generally around ISO 100 - 400 on the D5100. I tried manually and pictures come out dark when using lower ISO, with same lens on D5100 its fine.. ? Am I missing something here, I know the sensor on the D7100 is superior, but as there are more settings on the D7100 could there be one which is conflicting with another. Sorry for the long post but this is really bugging me..
 

Mfrankfort

Senior Member
If your shooting in dark area's... 1/60 might not be enough to get correct exposure, so the iso needs to be high. Open up the aperture a bit ? Or just use manual iso, and keep it at something around 800 inside.. 200 outside.. Use U1 and U2
 

Horoscope Fish

Senior Member
Since upgrading from a D5100 to the really nice D7100 I notice that pictures I have been taking are using high ISO even though I have set the camera up as I did on the D5100. Using AUTO ISO with a low of 100 to a high of 6400, and a shutter speed of 1/60. These worked well on the D5100 but the superior D7100 is having pictures with High ISO 2800 - 6400 where as I was generally around ISO 100 - 400 on the D5100. I tried manually and pictures come out dark when using lower ISO, with same lens on D5100 its fine.. ? Am I missing something here, I know the sensor on the D7100 is superior, but as there are more settings on the D7100 could there be one which is conflicting with another. Sorry for the long post but this is really bugging me..

Are you using the same lens on the 7100 as you were on the 5100?
 

rockypaul

New member
Are you using the same lens on the 7100 as you were on the 5100?

Yes same lenses as only upgraded camera,, i have attached a picture (not very good) but it was outside on a reasonably bright day.. I tend to shoot aperture priority mode, anyway the picture contains details, any other suggestions would be appreciated..
PFL_0365.JPG
 

rockypaul

New member
Yes same lenses as only upgraded camera,, i have attached a picture (not very good) but it was outside on a reasonably bright day.. I tend to shoot aperture priority mode, anyway the picture contains details, any other suggestions would be appreciated..
View attachment 69681
SOME MORE DETAILS
NIKON D7100
F-Stop f/5.6
Exposure Time 1/60 sec
ISO Speed ISO-3200
Focal Length 150mm
EXIF 0230
 

everprentice

Senior Member
You used Av mode. Because you have your shutter speed limit to 1/60s and because your aperture can only open as far as f/5.6 the camera can only adjust the ISO to compensate for the shutter speed and aperture values and make a well exposed photograph.

*Addition: You were exposing a black cat on a dark foliage for a background.
 
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fotojack

Senior Member
SOME MORE DETAILS
NIKON D7100
F-Stop f/5.6
Exposure Time 1/60 sec
ISO Speed ISO-3200
Focal Length 150mm
EXIF 0230

There's your problem. You said this was shot outside on a reasonably bright day, so why such a high ISO? 100 or 200 would have been plenty.Shutter speed of 1/60th is way too low for the lens you were using, especially if hand held.
 

rockypaul

New member
You used Av mode. Because you have your shutter speed limit to 1/60s and because your aperture can only open as far as f/5.6 the camera can only adjust the ISO to compensate for the shutter speed and aperture values and make a well exposed photograph.

*Addition: You were exposing a black cat on a dark foliage for a background.

This is why i joined the forum so as to get advice, could you please let me know what to set the AUTO ISO settings to then in the menu so when i am shooting in AP that it will be correct..?
 
You really did not have enough light to do any more. Very slow shutter speed and wide open aperture the only thing you had left was to use a high ISO to get the shot. The camera did what it had to do.
 

nickt

Senior Member
The scene looks like it was not very well lit, so the iso is probably what was needed. It is highly unlikely that iso responds differently from your last camera. So something is not identical to your previous experience, probably lighting.

1/60 is too slow for 150mm. If you want to stick with auto iso, I would try the auto shutter speed option under auto iso. That will adjust the minimum shutter speed to keep it more appropriate for whatever focal length you are using. For this exact scene, you would end up with an even higher iso to get that higher shutter speed, but if that's what the lighting dictates, so be it. (or use flash)
 

DraganDL

Senior Member
First off, I've got to tell you a little secret: you did not get the REALLY "superior" sensor by buying D7100 (compared to D5100's sensor). Especially not the one which would be superior in terms of a low light performance. What you DID get is an in-camera motor drive (allowing you to autofocus with AF-D lenses), better matrix metering system (allowing you to use the non-CPU lenses), the sensor void of a low pass filter (which, theoretically could result in photos being more "detailed", but, also theoretically, could result in photos suffering from artifacts), and the weather-sealed casing. But, that's (probably) another story. The problem which is bothering you might be a consequence of your metering set in a different way than before (matrix, spot etc.).
 
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rockypaul

New member
First off, I've got to tell you a little secret: you did not get the "superior" sensor by buying D7100 (compared to D5100's sensor). Especially not the one which would be superior in terms of a low light performance. But, that's (probably) another story. The problem which is bothering you might be a consequence of your metering set in a different way than before (matrix, spot etc.).

Interesting, tell me more and what is best use of metering please..?
 

Horoscope Fish

Senior Member
First off, I've got to tell you a little secret: you did not get the "superior" sensor by buying D7100 (compared to D5100's sensor).

He may be referring to the fact the D7100 sensor has no OLPF, like the D5100 does.

Interesting, tell me more and what is best use of metering please..?

You might want to see this article that explains the differences between "Matrix", "Center Weighted" and "Spot" metering:

Which is Best: Matrix, Center Weighted, or Spot?

.....
 

fotojack

Senior Member
You seem to have a tendency to want to be "told" how to do everything. That's not how it works here. Read the manual your camera came with first. All the information you asked already is in there. If there is something you don't understand, or something the manual doesn't cover, THEN ask. We're not here to babysit you or lead you by the hand on every little aspect of operating your camera! We just don't have the time nor the inclination to do so. It's a matter of "we help those who help themselves" first.
 

rockypaul

New member
You seem to have a tendency to want to be "told" how to do everything. That's not how it works here. Read the manual your camera came with first. All the information you asked already is in there. If there is something you don't understand, or something the manual doesn't cover, THEN ask. We're not here to babysit you or lead you by the hand on every little aspect of operating your camera! We just don't have the time nor the inclination to do so. It's a matter of "we help those who help themselves" first.

I am not here to be babysat as you like to call it, just trying to make sure there is nothing wrong with the camera...
seems a disappointing attitude from a moderator.. and as for you reference to the manual I have read it and continue to do so, plus I have been comparing the manual to the answers.. but thank you to all the other suggestions from fellow users, those are very much appreciated..
 

Geoffc

Senior Member
SOME MORE DETAILS
NIKON D7100
F-Stop f/5.6
Exposure Time 1/60 sec
ISO Speed ISO-3200
Focal Length 150mm
EXIF 0230

I'm not sure that you actually have a problem. The picture looks to be correctly exposed. As the exposure comprises aperture, shutter speed and ISO, which one do you want to trade? To make ISO 1600 you could make the shutter speed 1/30 sec, but that's probably not desirable. A correct trio of settings will be the same on any body from a D3100 to a D4 and the sensor does not affect that. All you do is bias one to your desired needs. So unless your previous camera was magic you are getting what you should.

Better sensors do not allow the same exposure results at lower ISO. Have a search for articles on the exposure triangle.

Also try turning off auto ISO, put the camera in manual mode and use the exposure meter in the viewfinder to play with the settings whilst maintaining correct exposure. Do it on a tripod pointed at something where the light source is constant. The try the different metering modes pointed at the same target. This could go on to practicing black or white targets to see how the meter is fooled.
 

rockypaul

New member
I'm not sure that you actually have a problem. The picture looks to be correctly exposed. As the exposure comprises aperture, shutter speed and ISO, which one do you want to trade? To make ISO 1600 you could make the shutter speed 1/30 sec, but that's probably not desirable. A correct trio of settings will be the same on any body from a D3100 to a D4 and the sensor does not affect that. All you do is bias one to your desired needs. So unless your previous camera was magic you are getting what you should.



Better sensors do not allow the same exposure results at lower ISO. Have a search for articles on the exposure triangle.

Also try turning off auto ISO, put the camera in manual mode and use the exposure meter in the viewfinder to play with the settings whilst maintaining correct exposure. Do it on a tripod pointed at something where the light source is constant. The try the different metering modes pointed at the same target. This could go on to practicing black or white targets to see how the meter is fooled.

Thank you was planning to turn off Auto ISO and try manual this weekend.
 

egosbar

Senior Member
i set mine too easy iso (this allows rear wheel scroll control iso with no button push
, aperture priority then you just adjust the rear dial too up the iso too get the shutter speed you need for your focal length it works for me

i shoot on u1 raw with same settings as u2 but jpg , i may change this but works so far , i also use back focus assingned too the preview front button again works for me

getting too know this camera well now for only two weeks and never a nikon shooter , cant wait for next week two week cruise too new zealand , should get some good shots

wish i had a 105mm micro though but have too wait until xmas the wife is still getting over the 7100 lol , wait till she finds out after that its a 14-24 too complete , oh then the d800 haha
 
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