Usable ISO range of Nikon D7000?

12 years 10 months ago #106041 by Martha
I just got off the phone with rep over at Adorama who made a good point. I was calling in about getting some price comparisons between them and B&H on the D7000. One thing lead to another, then he was telling me that the marketed ISO range on most of today's DSLR camera's can be misleading. That the standard range on the D7000 goes from 100-6400 and is able to go up to something like ISO 25,600. He was telling me on a camera like this you would be looking at some serious noice showing up around the 1800-2000 area. That anything over that will be very grainy and you better have a good noise reduction software!

So why not advertise a more accurate scale of ISO range? Something that shows the range while low noise?

What determines a camera's ISO range? Is it just a chip or a thicker wire?


Photo Comments
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12 years 10 months ago #106117 by Shadowfixer1
Think of ISO like you do volume on a stereo. At a normal volume (ISO), it sounds great. Turn up the volume (ISO) and the sound (image) becomes distorted (noise). Cranking up the ISO is just amplifying the signal which introduces noise. Just because you get noise doesn't mean you can't use it. That's the only way to get the image at times. These are happy days when comparing digital with high speed film. Much better images today when using high ISO. Better to have a sharp image with noise than a blurry noise free image due to using a slow shutter speed and a low ISO.
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12 years 10 months ago #106637 by crystal

Shadowfixer1 wrote: Much better images today when using high ISO. Better to have a sharp image with noise than a blurry noise free image due to using a slow shutter speed and a low ISO.



:agree: Martha, keep in mind...the information you have received about the D7000 ISO, is the same information in all DSLR on ISO (give or take on the cameras range of ISO). So don't let what the rep tell you about the D7000 ISO keep you from getting the camera. Because all DSLR will have noise.
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12 years 10 months ago #107173 by Ziggy

Shadowfixer1 wrote: Think of ISO like you do volume on a stereo. At a normal volume (ISO), it sounds great. Turn up the volume (ISO) and the sound (image) becomes distorted (noise). Cranking up the ISO is just amplifying the signal which introduces noise. Just because you get noise doesn't mean you can't use it. That's the only way to get the image at times. These are happy days when comparing digital with high speed film. Much better images today when using high ISO. Better to have a sharp image with noise than a blurry noise free image due to using a slow shutter speed and a low ISO.


That's a good visual, I'll need to remember that one when I try to explain ISO next time :thumbsup:


Photo Comments
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12 years 10 months ago #107189 by Henry Peach
It also depends on your intended use of the high ISO photo. If I need large prints I'm more concerned about high ISO noise than if I would be with small prints or web display.

Processing software and skill can have an affect on apparent noise.

In the end how much is too much is just an opinion, so you have to check for yourself. Find some sample files you can download and have printed. Besides the Nikon website there are numerous review sites that make files like this available. Or someone who already owns the camera. To see what large prints would look like without paying for large prints crop a section out of the center and print it 8"x10".

Dxomark.com scores the D7000 pretty high for high ISO quality among APS-C format DSLRs.
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