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Body of A Canon Camera and functioning controls

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Body of A Canon Camera and functioning controls

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https://youtu.be/TNNPmk7qcBUhttps://youtu.be/TNNPmk7qcBU

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Playing around with different white balance settings 

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Playing around with different white balance settings 

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Health and Safety rules in the dark room

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Health and Safety rules in the dark room

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- Bags and coats must be tucked away
- Floors must be completely clear
- enter and exit the dark room on at a time to preserve the environment
- wear aprons to protect clothing
- have your work station set up before going in to low (safe) light
- blink several times for your eyes to become used to both safe light and     when in normal light for your eyes to adjust
- always clean up spillages as there is a risk someone could slip over
- always wash your hands after using chemicals
- always store chemicals low down and in the correct containers and are     stored upright
- Do not talk too loud
- follow instructions
- have spacial awareness
- Do not use phones or have an unauthorised light source

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white balance notes

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here are 3 images I created using different objects placed on photosensitive paper and exposed that to 7-8 seconds with an enlarger

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Evaluation and analysis of my mood shoot

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chemical mix  RatioA way of comparing two sets of quantities  

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chemical mix  RatioA way of comparing two sets of quantities  

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Stop to water
3:7 ratio

Fixer to water

1:4 Ratio

100ml : 400ml = 0.5l

200ml : 800ml = 1l

300ml : 1200ml = 1.5l

Developer to water

1:9 Ratio

100ml : 900ml = 1l

50ml : 450ml = 0.5l

200ml : 1800ml = 2l

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Jonny Kwango AKA John Lagey Image taken in the 1960's

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This was invented by John Hershall between 1839-42 and was used by engineers to exact details. this was a way to use light to record. Cyanotype was popular because it was cheap, the blue colouring was striking and was the emulsion was easily spread across large pieces of paper.

The cyanotype emulsion was a combination of two chemicals:

POTASSIUM FERRICYANIDE
measure 10g and 100ml of distilled water

FERRIC AMMONIUM CITRATE
measure 25g and 100ml of distilled water

These chemicals need to be mixed separately (because once mixed they are light sensitive)

once the two solutions are mixed in their separate pots if you switch to low light in the dark room (safe light/infra red) they can then be mixed together. now the chemicals are mixed the emulsion can very lightly be evenly spread across a large piece of paper but you must make sure that it receives no light or the chemical change will begin. using objects and composure expose to ultra violet light and watch the change as your image becomes clearer.

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To process an image you must place the print in to a solution of developer for 1min30 secs then place it into the stop bath for 30 secs to stop the development of the image moving your photo on to the fixer solution for 6mins to stabilise the image and to remove the photosensitive element of the photographic paper finally place the image in a bath of water making sure the water is running to clear away all chemicals.

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CELLULOSE - thin layer of plastic coating on photographic paper

SILVER HALIDE - the chemical/layer that reacts to light that is photosensitive

PHOTOSENSITIVE - reacts to light

EMULSION - is an mix of photosensitive coating that is spread evenly across the paper

FOGGED - is a state that the paper or image be/will show if the paper accidently is exposed to light

DEVELOPER - develops photos and speeds up the development process and is the first bath

STOP - stops the development process and is the second bath

FIXER - the fixer stabilises the image and strips away the silver halide

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https://sway.com/UtebKaWXoZbxYoir

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this image is under exposed and was taken at the rear of the college by uncovering the pinhole for a 30 second exposure on a bright but overcast day.

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(Pinhole APERTURE) Pinhole photography my two attempts, both were very different as one was under exposed meaning too little light to capture a whole image (taken of the college outside at 30 seconds and the other from inside for 1 minute. I developed these images in the dark room 1min30s in the developer, 30s in the stop bath then 4mins in the fixer and finally rinsed under fresh running water

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I used an old box with electrical tape to seal the box from light. using blue tack inside of the box to attach photosensitive paper and finally a pin to create the apeture.

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International Standards Organisation

ISO is the level of sensitivity your camera has to light.

ISO : the lower the number the less sensitive your camera is to light .

The more sensitive to light your camera becomes the less time you need to expose an image. It is increased and used when there is not enough light to capture an image quickly. The higher the number the more grainy your image will turn out this is referred to as noise.

E.g: capturing black skimmers (birds) at 1/2000th of a second ISO at 800 to freeze the birds in flight where as the lower number E.g: 100 the sensor would have needed 8 x more time at 1/250th of a second .

ISO is the standard scale used to measure light sensitivity.

200 (iso) would be good to use for a cloudy day.

The scale that iso is measured starts at 100 and then doubles as it moves up the scale so iso numbers read 100, 200, 400, 800, 1600 and so on.

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Kelvin value is the spectrum that colour in photography and how that is measured e.g it measures colour temperature of different light sources ranging from 2000K -9000K.

Lower colour temperatures are called warm colours and range from yellows and reds (2700k-3000k) anything over 5000K these are known as cool colours and have a blue effect.

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White balance is a process of removing unrealistic colour casts and to make white objects to be white

This can be used to create warm images and changes the tones ranging from a red(ish) orange to anda green(ish) blue known as Tungsten.

Different types of light include: fluorescent, tungsten, day light, incandescent light and flat light (cloudy day).

White balance is used to tell the camera what light to focus on and this reflects in the image and quality

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The higher the ISO the more sensitive your camera is to light. 

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The higher the ISO the more sensitive your camera is to light. 