High ISO with Nikon D40

Here are a couple of shots taken in the late afternoon of what had been a bright, sunny day.

The occasion was a parade that was not greeted with universal approval. In the first shot, notice the stationary bus sideways on across the street, used to block off traffic.

The fact is that at some point later in the late afternoon I messed up and set the camera to ISO3200 by mistake. It is all down to my not being able to see the ISO setting unless I am wearing my glasses, because I am long sighted. The rear LCD is just a blur without them. And unlike the D200, the ISO does not show in the viewfinder.

I can see the ISO in the viewfinder of the D200 without glasses, which if for no other reason, is why for serious work I would use the D200 rather than the D40. But the D40 is a light, carry it anywhere camera, so it has its place.

I have worked out a way to set the ISO on the D4O without putting on my glasses but on this occasion the method failed me.

To operate ISO on the D40 by feel:
The first step is to set or assign the ‘Function’ (Fn) to ‘ISO’ in Set-Up in the menus. Then when you want to change ISO, press Fn and the rear LCD will light up. Spin the rear wheel to the left a few times. That will bottom-out ISO at its lowest ISO, which is 200. Then move the wheel to the right one click at a time. That wil move IS0 to 400 800 1600 and Hi1 with each succeeding click. So for example two clicks is 800. That is the theory – but there were too many clicks yesterday.

The problem with Hi1 is not that it is incapable of making a reasonably clean image; it is that there is no room for exposure errors. Any under-exposure punishes the image badly. The shot of the crowd was taken in a street flanked by trees and buildings that cut down the available light, so the metering worked. The shots of the two hotel employees had a lot of light pouring in from the sky and it under-exposed the shadow areas of the shot.

This shot of the bike with the bus in the background was shot at ISO1600 1/1600 at f5.6.

This crowd scene was shot at ISO3200 1/125sec at f7.1

a shot at 3200ISO with a lot of noise reduction applied

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