Session 13

Just a few pics taken whilst out and about this week

Canary Wharf

Sculpture exhibition

Black Mountains, South Wales

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Session 12

Flash Photography

Used to improve on the ambient light to improve the composition of the picture. When ambient light is inadequate, or a higher shutter speed is required in low light conditions, the use of a flash will assist. the following photographs use a flash for ‘fill’, so as to enhance the all round lighting, or to remove the shadows in the darker areas:

The strength the flash can be adjusted through the setting on a scale, representative of EV compensation levels. Just as a point, though obviously not relevant here is that red-eye is avoided when using detached lighting.

These pictures taken through a church window are taken with an on-camera flash, but better would be a remote so as it can be manoeuvred for maximum lighting effect. This can be a single flash or a combination (master and slave).

Some other examples of the use of flash to assist the lighting of photographs:

 

Composition

the never ending struggle to improve on composition! here are a few taken overt the last couple of weeks…

 

5 Themed Photographs

As part of the coursework, we have been asked to shoot and present 5 themed photographs entitled “The Natural World and Man”. My selection is below:

These photographs have common denominators of grasses and sedges which left undisturbed take on an amazing variety of sizes and individual character. These settings show how man has intervened and shaped these for other benefits. These photographs have all been taken using small apertures, low (64 and 200 ISO sensor settings) and 5 or 10 Stopper filters so as to smooth out the water and maximise the colour vibrancy. Exposures timings were therefore between 40″ and 60″. Some post production image management has also been added to each. Composition has featured on dominant lines, lead-in lines and boundaries. The water in the powerful sunset image is a man made lake, and acts as the visual barrier between the land and sky.

Session 10

Composition

Photography.  Now its getting personal.  There’s no exact science or maths around what makes a good photograph, and everyone’s take on this is going to be slightly different. In general its a very subjective point, as one person may see merit in a picture not appreciated by others. But there are some general principles that can be followed, and these are:

Emphasis

Is the eye immediately drawn to a particular point or area? Is there a leading line? This may assist increasing the dwell time of the eye whilst the brain works it out and therefore of interest of the viewer

Balance

How does it feel looking at the photo? Oddly, the rule of thirds which offsets strong features is better than having something dead central, but there must be balance to remove any tension that may exist

Unity

Does the photo look as though it is cohesive, or is it all a bit disjointed? A bitty photo won’t provide any lasting pleasure. It will be distracting to the overall feel of the photo.

Contrast

Are the dark areas sufficiently offset by the lighter areas? Are the shadows strong enough to make the features at stand out? A photo without sufficient contrast can make the overall photo seem a bit lacklustre

Movement

Always a good point of interest, and can be achieved by a slow shutter speed so as to give some blurring depicting action

Pattern

Is there a pattern or repetition in the photo that is clear and pleasing to the viewer. Usually best placed in the foreground, this may be like a weave or a multiple objects mirrored to provide interest.

 

Theme Selection

As part of the subject selection, photographs which did not meet highest standards of quality were rejected. All photographs must be in focus with appropriate light and colour levels. Noise, sharpness, chromatic aberrations and so on were all a prerequisite to the selection of these photographs.

For the “Natural World and Man” theme and following on from an upland lake scene with bog grasses in the foreground, my theme is to be –

GRASSES, SEDGES AND REEDS

Upland Lake (photograph 1)

 

Upland lake (Photograph 2)

 

Reeds (Photograph 3)

in this sequence of 4 photos, the reeds provide a focal point for the eye, but in my preferred shot, offer a natural frame for the out of focus hut in the distance

 

Kew Gardens 1  (Photograph 4)

the meadow reeds provide an interesting foreground in their own right, but the overall picture is given interest by the alpine glasshouse in the distance. This has been positioned according so as to give balance to the picture, using the skyline and the tree

 

Kew Gardens 2  (photograph 5)

the meadow pasture in the vicinity of the Temperate House provides a beautiful foreground, and the pictures aim to transpose this serenity. putting the grasses foremost and in focus taking the backdrop out of focus (the man part) was my personal preference.

 

Session 9

Sensor Sizes

Going back to the days of negative film, the industry standard for recreational to semi pro cameras was a 35mm film (the length of the long side of the negative frame). then along came electronic trickery, replacing the negative film for a light sensitive ‘plate’ that matched the size of the 35mm film. The light sensitive plate turned the light it received into algorithms which could then be stored as a ‘digital file’. Another story. In the meantime though, the 35mm plate was classed as a ‘Full Frame’ due to its replication of the original negative size. As electronic advancements improved the ability of the sensor plate, it was apparent it no longer need be the full size it was, so a new generation came around of reduced sizes. These are shown by comparison in the image below

Sensor_sizes_overlaid_inside.svg

When an image is taken on a full frame sensor, the focal length is on a 1:1 ratio – a kind of baseline. When the image sensor is on a smaller image sensor, such as with an Olympus shown in red above, aka Four Thirds, this is half the size of the full frame. The outcome is that it is half the focal length of the lens. So again on my Olympus, the lens is 12mm to 40mm. This would be a wide angle to a portrait lens on a full frame, but gives the equivalent of 24mm to 80mm when used with a half size image sensor.

 

Composition Homework

Types of Composition

There are a variety of subject types or categories. These vary from portraits, (outdoor, indoor and studio), to landscapes, night time photography and then into niche areas such as long exposure photography, groups, and so on.

Composition follows a number of general themes. Every photograph though must have

1) balance, tension in a photograph does not lead to a satisfactory image

2) features such as a lead-in line taking the eye to a destination

3) symmetry and patterns, so as to produce a pleasing effect

4) repetition of elements, particularly in the foreground which is an area often forgotten, and this helps sets the base for the photograph

5) framing, or a frame within a frame. The view through an arch, pictures topped by a tree branch and so on all add to the perimeter detail that takes the eye comfortably to the centre of the picture. It becomes a focusing aid for the eye.

6) rule of thirds, the most commonly used criteria as this quickly helps develop the balance of a composition.

7) Off Centre, so as to leave space for the subject to move into. Eg a car moving in a direction is better positioned so that it has space to go forward.

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The Coursework – this has been to follow the theme of:

The Natural World and Man

My interpretation of this has been anything to do with nature, and where man has had an influence.

Active

anything that moves falls into this group, be it sheep reared by man, a man in a tractor or the built environment playing an active part in the natural landscape:

 

Passive

the opposite to Active – simply a structure put there by man

 

Upland Study

 

Lightroom ‘Art’ adjustments

Using Lightroom and Photoshop, the followingPhotographs have been adjusted;

As well as Post production alterations, filters can be directly used on camera lens to manipulate images for example N D filters which reduces light, graduated filters which varies the light across the width of the lens polarising and coloured filters

 

Using camera equipment and lenses safely

The most widely found problem with Photography is the use of the tripod. In public places, and with the tripod legs extended, they become an immediate trip hazard. In locations where there are numerous people and visibility becomes obscured, it is not uncommon for the next of the tripod to be hit. Great care must therefore be taken to ensure public Safety is respected.

In addition, photographic equipment is fragile and sensitive so using it safely is of paramount importance. Whilst every camera has its own characteristics, some being more robust than others, failure to keep camera is dry, in a dust free environment, careful handling to avoid scratches, with knocks and bangs Will result in immediate damage or foreshortening the longer term usage of the equipment. Simple rules of thumb on this such as regularly cleaning, the use of a camera bag with adequate padding, waterproof bags during inclement weather and general awareness of the fragility of the equipment is required.

Session 8

Shutter Speeds – The Tortoise and the Hare

Class this week studied the outcomes of what can be achieved with fast and a slow shutter speeds. Fast shutter speeds freeze motion to a crisp picture – an instantaneous snap shot as if instantly crystallised in time.  With the opposite and where there is motion, a slow shutter speed will portray motion as a blur or a silky finish if the motion is continuous.

Fast Shutter Speeds

Great fun here blowing up water balloons exemplifying the benefits of a fast shutter speed. Set at 1/2000th sec is quite within the camera’s capability (max on Olympus is 1/8000), but aperture needs to be as open as possible to allow maximum light in and maintaining a low ISO to avoid noise.

 

Use of a fast shutter speed has more regular use with situations such as birds in flight, photographing a moving car etc.

 

 

Slow Shutter Speeds

Conversely a slow shutter speed can portray motion through movement as a blurring effect, with examples below:

Filters

polarising filters – glare off refelctive surfaces (water, & windows) is removed through the elimination of one of the axis of light. The results are much cleaner pictures showing considerably more detail in such situations than otherwise. it is also considered that colours become stronger with one plane of light rather than confused through the opposite

light reducing filters – known as neutral density filters which come in various grades. by reducing the quantium of light entering the lens, the shutter has to consequently stay open for longer. This allows photograph of water and skies to be taken that show the movement. Standard filters are the equivalent of 3, 6 & 10 f stops. With a 10 stop, an exposure time that might be set for 1/20th sec would give an equivalent exposure time of  51secs. Again, its also apparent colours become more vivid with the additional time the sensor has to collect the information

Use of both filters together:

Use of just the polarising filter:

 

High Definition Resolution

This allows photographs to be taken of dark places from a position of greater light. The camera would be balancing this out, leaving the darker areas that the human eye can focus in on in the dark. HDR is an in camera application that takes 3 photographs of a subject in rapid succession. Depending on how the camera has been set up, though a typical spread would be of 3 frames, the first being under exposed at -3.0 f stops, then a desired exposure followed by an over exposed frame of +3.0 f stops. The averaged outcome captures detail of the dark areas that would otherwise be missed.

Intended Camera Movement

ICM has a use to show interest that would otherwise be a bland subject. Some of the outcomes give an abstract quality, which creates it’s own art form. Some shots are appealing as they make the viewer stop to consider the pattern that has been created  or what the original might have been. I found it particularly useful to practise the hand motions before taking the first photo and don’t forget to stop the auto sensor/lens steadying option in the camera

… though much of my ICM is often Unintended CM !

 

Session 7

Long Exposures and night time photography

This week was an introduction to long exposures. In class we learned to take multiple images on the same frame and light painting.  This along with our own creativity for photographs using long exposures was the theme for the homework.

As always, a couple of things in some kind of order (!)…

  • Use of a tripod is a essential
  • Camera control for stability is vital, achieved through  a remote cable, via an   iPhone through wifi or set the in-camera timer
  • set the timer to bulb / live bulb
  • set the ISO to a low level (+/- ISO100)
  • set the camera to manual focus (auto won’t work in the dark)
  • set the aperture to a suitable value –  high if there’s still light in the sky.  If darker, optional lower value if shallow depth of field is required or larger value for a smaller aperture if time is less consequential and a full depth of field is preferred
  • shoot away, review at the end photo and make adjustments to improve on the next shot!

Buildings

 

Landscapes

 

Light painting & trails

Night Sky & nature

 

Misc pics