Sunday, 30 September 2012

Photographic Lighting

Exercise: Softening the light


Picture 1 1/6 sec @ f5.6

Picture 2 1/13 sec @ f5.6






















Picture 1 was taken with the undiffused light, picture 2 with the diffuser in place. For some reason the meter has decided that the shot taken with the diffuser in place has required a shorter shutter speed. The light on the diffused image appears to have been spread around much more evenly. The bright highlights on the undiffused image have been replaced by much more even tones throughout. The two significant shadows in the facial area appear much softer in Picture 2 with softer edges. Picture 1 seems to have been better exposed. This may be an anomaly with this particular subject setup, I will have to conduct a further experiment. Overall, at the moment I would say I like the colours of Picture 1 but prefer the consistency of the light in Picture 2


Exercise: The lighting angle

For this exercise I have changed the tungsten lamp I was using, firstly because it is easier to mave around the subject with it but mainly because it seems to "flicker" slightly less.

Front light
Side light













Edge light
Rear light













Front light at 45deg.
Side light at 45deg.













Edge light at 45deg.
Rear light at 45deg.













Overhead light
Frontal overhead light













Rear overhead light

Obsevations regarding this set. My rear lighting hasn't worked out as planned. No silhouette effect, despite numerous experiments with exposure and lighting. Of the rear lit shots, the overhead example probably best demonstrates the outline of the subject. The differences between the lighting examples are quite extreme in some instances. The standout image for me is the one taken with frontal lighting pointed down at 45 degrees. This has lit the subject evenly as you would expect but the extra shadow, though slight has given the image much more depth and even an almost three dimensional quality.




Contrast

As I do very little indoor shooting apart from concert photography I thought it may be a little daunting to find high or low contrast shots in my collection. There are many however.

Taken a couple of weeks ago, this stag was resting in a copse of trees. I simply waited for the morning light to clear the foliage to the right and peep through a gap in the trees. This image would be far less effective with a lower contrast.















The high degree of contrast in this image helps to draw the eye to the buoy and then on to the reflection of it.















Exercise: Contrast and shadow fill

Without Diffuser
With Diffuser



















No Diffuser, 1m Reflector
Diffuser, 1m Reflector



















No Diffuser, 1/2m Reflector
Diffuser 1/2m Reflector



















No Diffuser, Dull Foil Reflector
Diffuser, Dull Foil Reflector



















No Diffuser, Shiny Foil Reflector
Diffuser, Shiny Foil Reflector



















No Diffuser, Crumpled Foil Reflector
Diffuser, Crumpled Foil Reflector























In each instance here, the image containing the diffused light is better than the undiffused version. The foil paper added to the reflector made a significant difference, particularly with regard to bringing out the detail on that side of the image.

Looking at the images from the textbook was quite revealing. In the Alfred Stieglitz portrait of Dorothy Norman the deeper shadows frame the subject and the lighter shadows on the face add modelling, giving the image nice depth. Lightening the shadows could possibly introduce a slightly more fussy surround, detracting from the main subject of the picture. Without the shadows on the face you also might not be so drawn towards those mesmerising eyes.

In the Edward Weston portrait entitled Guadelupe Marin de Rivera, the deep shadows over the eyes combined with the open mouth and slightly raised head give the image a very powerful impact. Again, the face is framed perfectly by the shadows around the neck and into the head. Lightening these shadows would significantly reduce the passion portrayed in the image.


Exercise: Concentrating light

I left my garden gnome in situ as I thought it made quite an amusing subject for this particular exercise in the darkness of it's surrounds. I taped a cardboard tube, painted matt black inside, to a flash unit which was fired off camera quite close to the subject to produce this effect;



I'd like to experiment with multiple lights and coloured filters at some stage in the future, this has given me one or two ideas.


Exercise: Shiny surfaces

This was a very interesting exercise, if only for the fact that I was amazed how difficult it is to find something shiny in my house! I used a 105mm Macro lens for the close focus needed during this exercise.

Without Tracing Paper
With Tracing Paper










OK, a little work needed on the rather awkward composition of this engraved plate but the difference, achieved simply by curling a piece of tracing paper around the subject, is amazing! Interestingly, the wooden base of the trophy has been dulled somewhat.

Without Tracing Paper
With Tracing paper



















Smartphones are notorious for glare interfering with your view of the screen. If only they all came with a tracing paper hood! I wanted to see how this technique worked with a glass-like surface. Very well it would seem.

Without Tracing Paper
With Tracing Paper




















Finally I wanted a curved shiny surface. The original image is all shadow and highlight. The introduction of the humble tracing paper has produced a much more balanced result.


Making the best use of built in flash.

I have started to use this now, in the past I have disregarded it, to the point where the pop-up flash wouldn't pop up, it was stuck down through lack of use. I would originally just use it on full power without any thought.

Gundogs 


This image of Gundogs playing live is a perfect example. It is harsh, the bass player is overexposed and the atmospheric tungsten lighting has been swallowed up by it.









Now of course I have started to consider more carefully what I do with it.

Nomi Leonard
The image of Nomi Leonard was taken with the built in flash set to 1/128th power, barely a flicker. The tungsten lighting effect has not been lost but at the same time the face has been well lit and we have that rather nice catchlight which would otherwise have been lost. As a bonus, Nomi has not been blinded by a full power burst!







Dianne 

I had taken a shot of The Olympic Park at dusk and had the exposure in the camera. Placing Dianne in front of it would have resulted in a dark shadow of a person in the foreground. So for this shot I used the built-in flash at 1/50th power.






The built-in flash. It's my new best friend.

Thursday, 27 September 2012

Artificial Light

I take a lot of photographs in artificial light. Quite dark artificial light if that makes any sense. Four years ago I started taking my camera along to rock concerts. Not the big stadium type venues but the small clubs and pubs with an audience of less than a hundred or so. It was quite a steep learning curve initially and I found myself filling a 4gb memory card with about three usable shots on it! These days I'm much more careful before I push the button.

From the last gig I attended, just under three weeks ago;



















The latter of the three is an interesting image in the eyes of my photofriends. I used a burst of fill-in flash. Flashgun. The very word is enough to make the hairs on my neck stand on end and send me into a cold sweat. I'm rather nervous in the presence of it.


Exercise: Tungsten and Flourescent Lighting part 1.

Waiting until just after sunset I looked out of the window for about a minute. The room behind me had the tungsten lights switched on. Turning to look into the room I first saw the walls to be a kind of magnolia colour. This lasted just a moment. I continued to look into the room and about a minute later I looked back out of the window. Immediately the sky appeared to be a shade of aqua, or blue/green. Again, this sensation was very brief. 

Setting the camera to iso200 and opening the lens aperture to f2.8 I then took a series of meter readings throughout the room. In the darkest corner I measured a reading of .6 sec. It would be very difficult to handhold the camera with this exposure. In the lightest part of the room I was reading 1/30 sec. This would just about be possible to handhold.

Image 1

Image 1 was taken with the white balance set to Auto and the room tungsten lighting switched on. The subject itself has been recorded as slightly more yellow than it appears in reality. The background has been recorded quite accurately.







Image 2


Image 2 was shot with the white balance set to daylight in the same lighting conditions. Interestingly the colours have been recorded more accurately than they were with auto white balance, although the background appears to have a slightly blue cast.





Image 3


Image 3 was taken with the white balance set to tungsten. The outside background has a very blue cast. The subject colour is almost accurate but also suffers from a slightly blue cast. I think this may be due to it being sat in a bay window with outside light reaching it from the sides.






Exercise: Tungsten and Flourescent lighting part 2.

I had no luck at all finding an interior lit with CFL lamps. So for this part of the exercise I have included just the one type of flourescent lighting. Hopefully I will be able to collect some bulbs and perform the missing exercise at home before I submit for assessment.

Picture 1

Picture 1 was taken in flourescent lighting and with the white balance set to auto. It is almost accurate with regard to colour rendition but it appears to have a very slightly yellow hue.








Picture 2

Picture 2 was taken with the white balance set to Flourescent. The image is too cool and the colours of the scene have not been accurately reproduced. I think Picture 1 does a better job of recording the correct colours.







Picture 3

Picture 3 was shot with the never before used Alternative Flourescent white balance setting. I certainly wasn't expecting a result like this. way too yellow.









Exercise: Outdoors at night.

I will demonstrate the four scenario's listed in the brief followed by my own interpretations.

A floodlit building

A Floodlit Building

30 secs @ f32 iso200


The National Gallery












A brightly lit store front

A Brightly Lit Store Front

1/8 sec @ f5.6 iso200

The beautiful totally original Art Deco store front of Blooms.






A large interior with many people

A Large Interior With Many People

1/50 sec @ f2.8 iso1000 handheld

Victoria Station Concourse







A raised view along a busy road

A Raised View Along A Busy Road

30 secs @ f32 iso200

The M25 in Surrey







Train arriving at station

Train Arriving At Station

10 secs @ f16 iso200


Redhill Station






City skyline

City Skyline

1/50 sec @ f2.8 iso640 Handheld

London City







Descending view

Descending View

1/10 sec @ f2.8 iso640 Handheld

London Apartment Block













Train leaving station


Train Leaving Station

25 Secs @ f32 iso200








Olympic stadium


Olympic Stadium

1/160 sec @ f4.5 iso1000 Handheld



The Shard opening


The Shard Opening

1/20 sec @ f2.8 iso1000 Handheld














Off the underground


Off The Undeground

.8 sec @ f18 iso800 no tripod, braced against handrail







Rush


Rush

1/8 sec @ f8 iso400 Handheld