Coolpix P5000 received + samples (large)

Started Mar 19, 2007 | Discussions thread
w3 Senior Member • Posts: 2,839
Pls Check out Auto ISO - Re: ISO and VR Test - Re: Coolpix P5000

w3 wrote:

It would be more interesting to do the ISO test again under a
dimmer or darker situation:

*********************

Forgot to mention one condition: use No Flash.

Use A mode. Use no Zoom. Under a dim or low light situation.
Hand-held shots.

Initially set the manual ISO to 200.

Find an Aperture that will require a shutter speed about 1/10s for
a proper exposure. You may have to choose a proper low light
condition for that to happen. When you find that Aperture to have
1/10s at ISO 200 for a proper exposure, please fix at that same
Aperture through out the test. Say it is f/4.

Now, we get Aperture out of the way.

But we are staying under A mode and that same fixed Aperture f/4
(or whatever)

Take a picture at 1/10s, f/4 (or whatever fixed) and ISO 200

Switch to ISO 100. The A mode should now choose 1/5s for the same
scene.

Take a picture at 1/5s, f/4 and ISO 100.

Similarly,

Switch to ISO 400. The A mode should now choose 1/20s for the same
scene.

Take a picture at 1/20s, f/4 and ISO 400

Take a picture at 1/40s, f/4 and ISO 800

Take a picture at 1/80s, f/4 and ISO 1600.

**********************

This test will show various ISO performance for about the same
exposure. It will also show how good P5000's Vibration Reduction
is for hand-held shots.

Forgot to ask to do one more thing - probably the most important thing for this test:

While staying under A mode with that same fixed Aperture (f/4 or whatever), and for the same scene,

please switch to Auto ISO and take one more picture.

Please find out what ISO the Auto ISO would pick and at what Shutter Speed.

We know the ISO will be 800 or below since ISO is capped by Auto ISO at 800 under P A S M modes.

More simple tests may be needed based on the answer:

If Auto ISO chooses ISO 800 at 1/40s (and f/4), we may want to find a slightly brighter scene that would do manual ISO 800 at about 1/80s (and f/4), and another brighter scene with manual ISO 800 at about 1/160s (and f/4).

Then switch back to Auto ISO and see what it will pick for those 2 additional brighter scenes.

Thank you very very much in advance.

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