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5 12 2008
water
Black Water

Withered

Finance (old school)

Finance (old school)





DOF and Exposure

5 12 2008

EXPOSURE

OVER EXPOSED

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F/22 ; 1/10sec; 70mm

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F/4.5 ; 1/25sec; 25mm


So what does overexposed means it is when you allow to much light to reach the sensor and the resulting image is too “light/bright” as you can see you barely can see the face neither the background for it has too much light on it. The camera has to select a combination of aperture and shutter speed to get a decent shot. So if the made a wrong combination or timing the shot or image will either be overexposed or under exposed. But now a days this problem could be fix, using Photo applications like “Adobe Photoshop

UNDEREXPOSED

Underexposure is when not enough light reaches the sensor which results to dark, dull and lifeless image. Basically it’s the opposite of overexposure. Shooting on manual settings, the photographer sometimes sets the wrong settings as you can see the shadows or dark areas will be too dark and featureless other details and information is lost and cant be seen. There is a solution to avoid this problem using a bigger aperture or a slower shutter speed you can have more exposure. You can do this manually or you can use exposure compensation

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F/4.5 ; 1/400sec; 25mm

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F/22 ; 1/800sec; 70mm

CORRECT EXPOSURE

The correct exposure is achieved by choosing the right combination of shutter speed and aperture. Timing and light is balanced. But in some cameras correct exposure is hard to determine, example you see the place with perfect amount of light yet when you shot it you see the image over expose or under exposed. So it really depends on you shutter speed, aperture, camera mode and timing.

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F/22 ; 1/100sec; 70mm

DEPTH OF FIELD

SHALLOW DEPTH

Your subject in front has all the focus while the background is in a blur. You can control this by adjusting, larger apertures and closer subject distances produce a shallower depth of field. As you can see the subject is clear and the background is in a blur.

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F/5 ; 1/500sec; 48mm

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F/4.5 ; 1/1250sec; 70mm

SANDWICHING

This is the hardest type. You need to focus in a middle subject leaving the front and the back blur or unfocused. The middle part has the focus and you need Timing and speed.

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F/8 ; 1/80sec; 40mm





Lines, Texture, Color

28 11 2008

On the next discussion, we the deskpub2220, would compare two pictures that are categorize in three (3) subjects pertaining to: Lines, Texture, and Color. We use the NIKON D80 in an Auto-mode. And, took the pictures in our school, Holy Angel University, Philippines. We are more on taking shoots very often on the subjects that are categorize in Color and we had difficulties on searching subjects that are categorize in Lines. Now let us move on with the results of our pictures.

Lines

f/8 - Exposure Time - 1/250
Pic1. Focal Length – 26mm ; F-Number – f/8 ; Exposure Time – 1/25

Pic2. Focal Length - 26mm ; F-Number - f/4 ; Exposure Time - 1/60
Pic2. Focal Length – 26mm ; F-Number – f/4 ; Exposure Time – 1/60

•The pic 1, has a 2-point perspective and the pic 2, has a 1-point perspective.•

What good / went wrong on the picture?

The pic 1 follows a 2-point perspective, which expected to be, but on the other hand, the subject, which is the building, seems to be hanging. The shoot does not cover the building’s name, that why we stated that is a hanging picture.

We have plan that taking a shoot on the pic 2 must have a vanishing point of 1 but the result as you can see, is not what we expected to be. Yap, it has a vanishing point but it is not a 1-point perspective. And the SLR uses a flash that’s why the picture has a shadow at the bottom left.

What may be the solution?

Pic1’s exposure is not quite good, it should have increase the aperture so that more light would enter the picture. It should be more on adding the building’s name or up to the first floor of the building if the subject is the building itself and learning more on exposure so that the subject will be more brighter and more attractive.

On the picture2 it should be making the top edge of the stairs be on the middle part of the picture or taking a picture from a far will enhance the 1-point perspective of the subject.

Color

Pic2. Focal Length - 95mm ; F-Number - f/5.6 ; Exposure Time - 1/125 sec.
Pic3. Focal Length – 95mm ; F-Number – f/5.6 ; Exposure Time – 1/125 sec.

Pic4. Focal Length - 90mm ; F-Number - f/5.6 ; Exposure Time - 1/80 ec.
Pic4. Focal Length – 90mm ; F-Number – f/5.6 ; Exposure Time – 1/80 ec.

Lets take a look at these two pictures we have here, the first picture shows a subject at the right side of the picture. While on the second picture the subject is centered on the picture.

What went good / wrong on the picture?

Pic4 did not follow the concept of the rule of thirds that the images must be placed at the left, right, upper, lower portion of the picture and not on its center. But on the other hand, pic3 follows the concept of the rule of third. Pic3’s subject was shoot in an angle of roughly 45°.

What may be the solution?

On pic3 it would be a better shoot if the subject’s angle would be 0° or up to 10°, so that the subject will be more attractive. On taking pictures follow the different rules of photography to achieve better image for your picture.

Texture

Texture helps to emphasize the features and details in a photograph. By capturing texture of objects being photographed, you can create form.

When people observe a soft, furry object or a smooth, shining surface, they have a strong urge to touch it. You can provide much of the pleasure people get from the feel of touching such objects by rendering texture in your pictures. Texture can be used to give realism and character to a picture and may in itself be the subject of a photograph. When texture is used as a subordinate element within the picture, it lends strength to the main idea in the photograph. It usually takes just a little different lighting or a slight change in camera position to improve the rendering of texture in a picture. When an area in a photograph shows rich texture, the textured area usually creates a form or shape; therefore, it should be considered in planning the photograph


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Pic4. Focal Length - 48mm ; F-Number - f/4.8 ; Exposure Time - 1/30 ec.

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Pic5. Focal Length - 66mm ; F-Number - f/5.3 ; Exposure Time - 1/200 ec.

What good / went wrong on the picture?

This 2 pictures are taken up inside our campus. The image one is a mixed up stylish type of image between color and textured type of image. As u can see, the image has a refreshing color of green and yellow green which is have a relaxing image for our eyes.

The picture 5 is a black and grey textured picture. This image is taken up by using birds-eye-view. This picture is like a stairs but its not. It’s a lined textured flooring in the kapampangan center park.

What may be the solution?

The wrong side of the image one is we show the wood of the trey. Take a look at this picture down here

cute

The image 2 is like a railroad or a pedestrian lane but don’t have a yellow lines. Messed up.





Had You Seen SomeOne “Romancing the Piano”…?

19 11 2008

We have many of concerts held on our beloved School, Holy Angel University, but only one bothered us….a lot. Why? Because of the title of the piano concert, entitled “Romancing the Piano”. If you take it literally, it will mean something that beyond R18?! ahaha :) ) funny eh…

Honestly speaking, we thought of this “piano concert” to be dull and boring, as for the old ones that we experience.  We perceived this stuff as a boring kind of music, but Sir Raul M. Sunico proves us that we are wrong…

RomancingPiano

Professor Raul M. Sunico is a top Filipino pianist, a dean of UST Conservatory of Music heads t

he 3rd benefit concert for the HAU’s Chapel, entitled “Romancing the Piano”. The concert has 3 genres: the classical music; Filipino love songs; and Broadway musicals.

Prof. Sunico also played his version of “Atin Ku Pung SingSing”, we found it so amazing. As the concert heats up, we are more appreciating the art of the piano as good as our trendy genres (rock, r&b, rap, etc.) today. It relaxes the people in its own way and can recognize the value of it.  That concert made us realized that we should not criticize that piano concert unless we never see or hear it by ourselves.  I consider it as another excellent talent as we had witness a great show. The superb, Dr. Raul M. Sunico, is one of kind, an artistic Pilipino, talented performer, and a down to earth person, a role model to us youth.

film strip of RP

film strip of Romancing the Piano





Basic Ingredients of Photography

18 11 2008

Ibn al-Haytham (Alhazen) (965-1040) invented the camera obscura (pic1) and pinhole camera (pic2)

Long before the first photograph were ever made. The camera obscura means “dark room”, uses  pinhole in a window blind to form an inverted image of an outside scene . Then in 1568 Daniel Barbaro describe the replacement of the lens.

“Camera Obscura” means “dark room”, and the use of a pinhole in a window blind to form an inverted image of an outside scene on an opposite wall of a dark room has been known since at least the time of the Arab scholar Ibn al Hait[h]em (or Alhazen, ca. 956-1038). The replacement of the pinhole with a converging lens was first described by the Venetian, Daniel Barbaro, in 1568. He suggested that the image would be improved by covering it with a disk having a small hole in the center, a very early reference to stopping down a lens to increase the depth of focus. However the pinhole camera is described as a very simple camera with no lens it’s a light-proof box with a single hole in one side were the light passes through and project an inverted image on the opposite side of the box.(pic3)

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pic1

pic2
pic2
pic3

pic3

camera_obscura_box

pic4

These early cameras did not record an image, but only projected images(pic4) the first permanent photographs was began in the 1820’s

Exposure

‘Exposure’ simply means the amount of light allowed to falls onto the film/shot. But now in modern time digital cameras has this CCD.

three elements of exposure

three elements of exposure

There are tree elements when using or playing with the exposure as u can see the image on the left side.

The ISO the measure of a digital camera sensor’s sensitivity to light, Shutter Speed the amount of time that the shutter is open and the aperture which is the size of the opening in the lens when a picture is taken.

If one element is change or adjusted the other elements will also change or be adjusted

In photography, exposure is the total amount of light allowed to fall on the photographic medium (photographic film or image sensor) during the process of taking a photograph. Exposure is measured in lux seconds, and can be computed from exposure value (EV) and scene luminance over a specified area.

Exposure Compensation +/- 2 EV in 1/3 EV steps

What is exposure compensation shown on this figure, this means that you can adjust the light that is entering the camera. You allow more light in (positive exposure compensation) or reduce the light that enters (negative exposure compensation).

Exposure can be measured by the light meter and manually you can adjust the light exposure by switching the camera to Manual mode.

Depending on the camera when you deal with exposure compensation, it may adjust the aperture while the shutter maintain its constant speed; or vice versa it can adjust the speed of the shutter while maintaining the aperture constant; or both may be adjusted aperture and shutter.

Camera Metered Exposure

F1.8

F2.8

F4

F5.6

F8

1/500

1/250

1/125

1/60

1/30

So, let’s say that the light meter measures a shutter speed of 1/125 sec. and aperture of F4.0.

+1EV Exposure Compensation

F1.8

F2.8

F4

F5.6

F8

1/500

1/250

1/125

1/60

1/30

When I dial in a +1EV exposure compensation, the meter opens up the aperture by 1 f-stop to F2.8, while still maintaining a shutter speed of 1/125 sec. This figure shows and overexposure.

-1EV Exposure Compensation

F1.8

F2.8

F4

F5.6

F8

1/500

1/250

1/125

1/60

1/30

If I dial in-1EV exposure compensation, the meter closes down the aperture by 1 f-stop to F5.6, while maintaining the same 1/125 sec. shutter speed. This figure is underexposure.

These figures show how adjusting the aperture and maintaining the shutter speed are affecting exposure compensation. You can change these exposures by manually adjusting your camera, changing the exposure depends on how you want your picture to show.

RULE OF THIRDS

One of the most popular ‘rules’ in photography is the Rule of Thirds. It is also popular amongst artists. It works like this:
Imaginary lines are drawn dividing the image into thirds both horizontally and vertically. You place important elements of your composition where these lines intersect.

The photograph to the right demonstrates the application of the rule of thirds. The horizon sits at the horizontal line dividing the lower third of the photo from the upper two-thirds. The application of the rule of thirds to photographs is considered by many to make them more aesthetically pleasing and professional-looking. The rule of thirds can be applied by lining up subjects with the guiding lines, placing the horizon on the top or bottom line instead of the center, or allowing linear features in the photograph to flow from section to section.

rule

This are the Rules

rule3

Rule of Third - Portrait

360237081_d679e43cd91

Rule of Third Apple

Composition - Rule of Thirds

Composition - Rule of Thirds