02 Focus with a set aperture

As these modules are to help us used our cameras I decided to use this exercise to test the Macro capability of my G1X. If with rather unconventional subjects. As you can see I chose to use some of my youngest sons Spiro toys.

The surroundings were chosen to help show the effect of the ‘moving’ line of sharp focus, by the mottled stone worktop and the lamp in the background that gradually comes into sharp relief.

Equipment used: Canon G1X and Tungsten lights. With the aperture set at f3.0 Note: even a very slight increase in focal length from widest 15mm rapidly affects the lenses light transmitting qualities with this camera. I took three photographs of my happy subjects, with the closest focus first at xxcm to the lamp back right of the shot.

Image 1 focused as close as the lens was able. The first character is out of focus as it is too close for the lens to focus, the eye of our second friend though is clearly in sharp focus as is the plane of focus (parallel to the film plane) visible across the stone work surface.

Images 2 focussed now with the point of focus roughly midpoint down the line of toys and the blue harpoon wielding toy is in sharp focus, again as is the plane of focus which is visible across the stone work surface. Also notice that the lamp and clock, though not in focus, are resolving into clearer more discern-able objects.

Image 3 focused on the lamp which is now in sharp focus and the numbers on the bottom of the wall clock can easily be read. The reflection of the lamp in the stone surface is also now sharp and shows the plane of focus.

Though the small sensor size and slow aperture of f2.8 hamper using this camera for this exercise, the close focus of the subjects above has helped to accenuate a reasonably shallow depth of field enabling the results above.

Looking at these images my preferred image would be the first. the sharp focus on the eye of the green toy, which is roughly holding thirds in the composition of the image. And the differentiation of the out of focus foreground and background draw the eye to the subject.


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