The following samples show ISO performance in low-light conditions for the D80 and D90.
Equipment: Nikon D80 & D90, with Sigma 30mm f/1.4, mounted on tripod.
Image processing: All shots are RAW, resized and saved as JPG in ViewNX, using Picture Control=Recorded Value (NR = Normal on both cameras) with no other adjustments or modifications.
| Experiment | D80 | D90 | Notes |
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(1) ISO 200, f/4, 1/20 sec |
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(2) ISO 400, f/4, 1/40 sec |
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(3) ISO 800, f/4, 1/80 sec |
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(4) ISO 1600, f/4, 1/160 sec |
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(4) ISO 3200, f/4, 1/320 sec |
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Yellow tint in "Hamburgers" sign is due to rolling-light changes in the sign itself. |
| Experiment | D80 | D90 | Notes |
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(1) ISO 200, f/4, 1/30 sec |
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(2) ISO 400, f/4, 1/60 sec |
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(3) ISO 800, f/4, 1/125 sec |
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(4) ISO 1600, f/4, 1/250 sec |
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(4) ISO 3200, f/4, 1/500 sec |
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| Experiment | D80 | D90 | Notes |
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(1) ISO 200, f/4, 1/30 sec |
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(2) ISO 400, f/4, 1/60 sec |
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(3) ISO 800, f/4, 1/125 sec |
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(4) ISO 1600, f/4, 1/250 sec |
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(4) ISO 3200, f/4, 1/500 sec |
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| Experiment | D80 | D90 | Notes |
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(1) ISO 200, f/8, 1/2 sec |
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(2) ISO 400, f/8, 1/5 sec |
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(3) ISO 800, f/8, 1/10 sec |
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(4) ISO 1600, f/8, 1/20 sec |
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(4) ISO 3200, f/8, 1/40 sec |
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| Experiment | D80 | D90 | Notes |
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(1) ISO 200, f/4, 1/8 sec |
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(2) ISO 400, f/4, 1/15 sec |
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(3) ISO 800, f/4, 1/30 sec |
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(4) ISO 1600, f/4, 1/60 sec |
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(4) ISO 3200, f/4, 1/125 sec |
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Still pondering...