Posts Tagged ‘exposure compensation’

Using exposure compensation – Walking into the light

Thursday, June 16th, 2011

Walking towards the light, Millenium Bridge, London
Man walking into a streak of light early in the morning.

Here’s a simple but effective way of making a small subject stand out from the background. Early in the morning, or actually any time that the sun is low in the sky, we get great shafts of light that streak between buildings to carve streets in two. Usually, if we allow the camera to do its own thing, these powerful beams of light will appear white and burnt out in the frame, but if you measure and expose for the beam instead of the scene in general, you can use them to great effect.

In this instance I was looking for a way to pick out a single person in this very busy part of London. Often I will do this by using a very shallow depth of field, or by getting close with a wideangle lens. On this morning though the sun was acting as a spotlight on a stage, so all I had to do was use it.

The camera was set to evaluative metering, which obviously was reading for the whole scene. With no interference from me the exposure chosen worked well for the scene but left the area where the sun was falling as a burnt-out white line. Obviously this wasn’t making an interesting picture, or illustrating what I could see with my eyes. The excitement of the scene was that the sun could pick anyone out who walked through its rays – and that is what I wanted to catch.

I was using a manual focus lens at the time, so set the focus point for the paving right where the sun was shining. I guessed that I would need exposure compensation of about three stops (-2EV) so I set this and took a trial shot. It looked about right. I could have set spot metering and measured that way, but I would have had to have walked over to the spot to fill the spot zone, and a guess, with the chance to make corrections, seemed a better and quicker option.

Once I was happy that the exposure and focus were good, I framed the shot and waited for the right person to come along. This is a popular route for runners, school children and to workers travelling to the office. I didn’t really know what sort of person was going to make the best shot, but I knew that when that person came along it would hit me. I didn’t have to wait long for this chap to pass by and make the scene complete. The face, the pose of the arms and legs and the outfit all work to tell us the story of the moment.

Samsung NX100, with Samyang 85mm f/1.4 lens in Nikon fit via a Samsung to Nikkor adapter. 1/500sec @ f/5.6, ISO 100.

See more of Damien Demolder’s recent photographic posts here

To see more of my pictures visit my galleries at www.damiendemolder.com

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Walking towards the light, Millenium Bridge, London
Man walking into a streak of light early in the morning.

People walking near The Millenium Bridge, London
Without user intervention your camera will record the scene this way.

Simple compositions – shapes and tones

Tuesday, September 15th, 2009

simple-compositionsThere is a difference between obvious subjects and those we have to search for. Obvious subjects might be a dramatic sunset, a lit fountain at night, the Eiffel Tower at anytime of the year or a zebra driving a jeep down the high street – these are things you couldn’t resist taking a picture of. Less obvious subjects only appear when you take time to be observant and have your eyes open to patterns, shapes and tones. Sometimes it’s difficult to explain exactly what it is you are photographing, but you can see there is a picture there all the same. And often it is only when you have the time to sit and study the picture after you have taken it that you begin to understand what it was that you saw in the first place. 

The great thing about the less obvious picture is that fewer people see them, and so fewer people take them – so you picture will stand out as being different. 

This picture was taken on an overcast day on a ship far out at sea. Walking the decks with my camera in my hand the obvious thing to do was to look outwards to see what was out at sea. But as the answer was ‘nothing’, the only thing to do was to photograph the ship itself. 

Ships, especially old ones like the QE2, are beautiful to look at. They have wonderful smooth curves and endless lines of rivets, panels, handrails and planking. In the low contrast light of the clouded sky the shapes of the ship were revealed in lightly graduated tones, as moderate shadow slipped into moderate highlight and all the details were carefully preserved. 

Exposing a white scene

Shooting a white subject on a white day can create some exposure difficulties. If you let the camera make all the exposure choices you’ll end up with an image that is just too dark and dull. The camera’s meter will only see a very bright scene and will recommend buttoning down the aperture to ensure things don’t appear too bright. The camera doesn’t know of course that you want the subject to appear bright – it is white after all, so you have to take a little control to add brightness. On this occasion I only had to shift the exposure by about 1/2EV. Using the exposure compensation mode I dialled in +1/2EV – but you can as easily do this in manual exposure mode and open the aperture to over expose by ½ a stop. 

Uprights

A scene like this, which relies on its simplicity, requires that you allow the viewer to appreciate the shapes and tones unhindered by distractions. Firstly make sure that are no annoying, eye grabbing, objects in the scene – a cigarette end, a bit of litter or a person for example. Next, make sure you are not creating any visual distractions, such as sloping horizons, converging verticals and lines that are simply not level. You can’t just point and shoot; there needs to be a few moments devoted to ensuring the camera is straight and level. This doesn’t take much effort, but it will make the difference between a pleasing shot and one that does not convey your message.  

After effects – software manipulation

The key to the success of this image is its simplicity, soft contrast, neutral muted colours and smooth tonality. So long as the white balance – I shot this on the ‘daylight’ setting – was about right in-camera there shouldn’t be too much you’ll need to do to the picture in software. I opened this frame and looked for a while, itching to do something to it. I tried a few things and messed about a bit before I realised that what I really needed to do was to leave it alone. So, I did. 

Pentax K10D, smc Pentax DA-70mm f/2.4 limited edition lens at f/2.4 and 1/2000sec, ISO 400. 

See more of Damien Demolder’s recent photographic posts here

To see more of my pictures visit my galleries at www.damiendemolder.com

To see more of my pictures
visit my photo galleries site
at www.damiendemolder.com


 

simple-compositions

 

The shot looks very nice in black and white too

The shot looks very nice in black and white too

Low angles – Crane Fly

Wednesday, May 7th, 2008

Crane FlyThis is a fairly simple idea for making macro or close-up shots more interesting and more unusual. I know I have spent ages in the past trying to get close to bugs and insects to show just how ‘macro’ I can get. In the end though I often created pictures that were only interesting from the point of view of being close to a small object – rather than pictures that are visually stimulating in their own right.

For this shot I didn’t get as close as I could, but concentrated instead on getting a nice picture. Using this low angle I was able to create a brilliant blue background using the sky. It also makes the shot striking in the first instance because we are not used to seeing Daddy Long Legs from this angle. Looking up at the subject in this way the viewer gets the impression that the insect is a giant – its a bit War of the Worlds.

On this occasion I set the camera to aperture priority mode and was able to shoot away without needing any exposure compensation. If the sky had been any brighter or darker I may well have needed to adjust the exposure by half a stop or so. Shooting with ISO 400 might not be best for ultimate picture quality, but it allowed me to combine a small aperture, for extensive depth of field, with the short shutter speed I needed to combat the effect of the wind blowing the flowers around.

On balance it’s better to accept some image noise to create a sharp image. Had I shot at ISO 100, for example, I would have been forced to use a shutter speed of 1/125sec – which would not have been short enough to freeze the movement of the subject. The shot didn’t need any post capture work, other than to add the touch of Unsharp Mask that all digital files require.

The camera I used was a compact with a flip-out articulated screen so it was easy for me to shot from this low angle and still see what I was going to get. I have shot the same sort of thing with other models as well though, without the flexibility of this type of screen – you just have to rely on guess-work and shoot a few more pictures to get the result you are looking for.

Shot with an Olympus Camedia C7070WZ – exposure 1/500sec at f/11. ISO 400 with the zoom set to the equivalent of 55mm.

Kauser Angle FinderIf you use a DSLR, or a film SLR, and don’t have a flip-out vari-angle screen like the C7070WZ has you could use an angle finder like the one shown here. This makes it easier to see through the lens when in awkward positions. Many camera manufacturers have their own units, but this one, sold through Kauser International, is designed to fit many different cameras via adapters.

To see more of my pictures visit my galleries at www.damiendemolder.com

To see more of my pictures
visit my photo galleries site
at www.damiendemolder.com

Crane Fly. Damien Demolder