Advanced digital - HDRI

HDRI - high dynamic range imaging

The average scene contains too wide a range for the whole scene to be captures, solution being cameras with wider dynamic range.

The idea behind HDR is combining multiple images and rather than taking one picture of the scene you take 5 shots each time moving 2 places on exposure level until have 5 shots of the scene. Then using software such as photomatix you combine the images which captures everything from shadow to highlight detail.

Key points -

* Shutter speed alteration on each shot

*Always try and use a tripod and you want every picture to be exactly the same position wise

*low iso

*Manual focus



These are two photographs which i took in the university  , i am really happy with how the first one turned out however the second one is a example of why all the pictures need to be of the exact same postion as when is one is slightly out it can slightly alter the finished picture as the postioning will be out.

 

 

 

Advanced digital photography - Stacking

Stacking - In lesson after we looked at the PowerPoint on stacking and the benefits of this, we also looked at the program helicon focus and how this program can do the stacking, after the process of taking between 6-30 pictures getting closer. We had a quick practice at this using a piece of metal using the small studio with one light on the object and using the portable flash.

Stacking -

Greater depth of field so the whole object is in focus.

Methods - single image capture

Light scanning photomacography, long exposure narrow beam of light focusing

Through the object with moving the lens and camera in relation.

 Helicon stacking program

 

 

 

End picture of all the individual pictures stacked.

Applied photography - Blacklight & floresance

Ultraviolet fluorescence photography is visible radiation where the filter absorbs all visible light and only allowing ultraviolent to pass. When shooting ultraviolet the room needs to be dark with a black background to get the best effect.

Black light - To create black light photography again the room needs to be completely dark with a black light and a uv filter also a tripod so that the camera stays still and keep position of the photographs.

After focusing the camera and slowing down the shutter speed as black light is all about over exposure.



Ultraviolet flouresence pictures-

I first started experimenting with a white shoe which came up under the light really good then i wanted to get more creative and placed a ball near it so the shoe looked like it was kicking the ball.

Then after experimenting with objects we was given some coloured powder which under the light was floresant.

 

 

 

Blacklight pictures - For these pictures i used a tall glass and some soda water and slowly poured the water into the glass while taking pictures , i think these worked really well because the water shows strongly in the pictures under the blacklight.

Applied photography - Illumination

Illumination in photography - Transmitted light coming through the subject bright field light going directly through the glass or light directly behind the subject.

Transmitted dark field - light through if perfect e.g. mirrors you would see nothing anything on it would change direction of the glass.

On top incident bright field light from right light source onto the subject.

Ring flash from class to the camera.

Axel illumination bouncing light of it, flat lighting straight from object into the lenses, the piece of glass goes through as well as down.

Indecent dark field - light goes from angle to surface.

These are some examples from when experimented with illumination using just everyday objects like plastic kife's and forks also plastic goggles , putting the yellow and blue plastic other you can see the effect and illumination it has and makes for some interesting pictures.

Applied photography - Close up photography - Photomicography/photomacography

Close up photography- There is different types of close up photography which depends on the zoomed in shot, it can vary from medium close up, extreme close up.

Close up photography being magnified photography also there is photomacography and photomicrography.

Using the microscope and camera you can get some extreme close ups , using some slides with fragments on or insects body organs ect which you then slot the slide into the microscope ready to take pictures these being micro pictures.





Photomicrography -

Factors - depth of field vibration or movement

Photomicrography is where you use a light microscope by hooking up your camera to the microscope this then allowing you to be able to take pictures at a high magnification. This is a scale that is at a high level and not visible to the naked eye.

Close up photogaphy using the microscope of very small stones.

Photomicography these photo's of exstreme micro close ups of a spiders organ.

Advanced digital - Colour management

Navigating colour management -

Colour management is a science and can be difficult

Always shoot in raw no attached jpeg have to choose colour profile as well during this.

It is in the raw stage where conversion is taking place where the profile had to be applied.

Colour management is digital imaging controlled conversions between various devices e.g scanners, tv screens or camera’s.

The purpose is to create good colour and for example if this was being done with video the aim with the colour management would be for all the frames in the video to have the same colour or a good match throughout the video.