Today’s session tailored around exploring aperture in its more optical role. For instance aperture in photography terms can be identified as f stops in which determines the size of the hole and depth of field. To elaborate the smaller the f stop, the larger the aperture, creating a more wider depth of field, in other words the main subject is in focus with the background blurred.
Using my standard kit lens ranging at 18-135mm, this image was captured outside Sheffield Winter Gardens at the following exposure triangle readings:
F Stop- 5.6
Shutter speed- 1/80
Focal length- 18mm
As you can see, both the background and main subject are in focus and therefore doesn’t show any evidence of my depth of field and aperture understanding.
Still slighty blurred in terms of composition for the reason being my subject is out of focus, in comparison to the shot above you can evidently see the difference in depth of field as the background appears blurred which is required if wanting to take profressional and interesting looking images.
The file information for this shot is as follows
F Stop- 5.6
Shutter speed- 1/30
Focal length- 135mm
From taking portraiture images outside we then moved onto Winter Gardens interior and composed our own images, capturing what we felt would make interesting results, using the skills we’d previously learnt from lecture and group practical. As well as this, I got the opportunity to experiment putting my aperture knowledge into action in the form of using my 55-300mm macro lens and the results were quite surprising.
Taking a risk and shooting handheld meaning no tripod was involved, straight away you can see this image had been captured via portrait orientation, and produces a result that pays more attention to the fountain than the water in general. This is because although the water is important, unlike the previous image above, this image displays a close up of the main subject, showcasing both water coming out of the fountain as well as various droplets depending on which side of the image you observe. Elaborating in depth, the left side clearly shows standard looking water droplets whereas the right side creates the rainfall effect / look.
The composition details for this image were the following
F Stop- 5.6
Shutter speed- 1/50
Composed using a built in filter on my specified camera (Pentax K-50), and in landscape orientation like most my images, this is probably my favourite shot out of my whole water theme captured in todays session. Not only is this because I amended the hue but because the movement of the water replicates steam for the fact that it gives off that result due to the settings used in order to produce the image.
F Stop- 6.3
Shutter speed- 0.8
Focal length- 88mm
Although aperture and shutter speed work together, shutter speed, which can be presented as SV (shutter priority) on some cameras, is part of the exposure triangle in which detects how long the shutter is open for, therefore determines whether the image will be balanced, under or overexposed.
ISO on the other hand measures the sensitivity in camera and therefore the lower the value, the less sensitive your camera becomes, meaning noise and grain isn’t much of an issue, compared to high ISO’s which cause severe noise and grain results.
