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Sunday, August 12, 2012

Past vs. Present (SLR vs dSLR)









I can never imagine a world without camera.

Para sa iba ito'y isa lamang gadget o laruan upang makapaglibang. Yung iba naman ginagamit lang 'to para makapanira ng buhay ng ibang tao. Yung iba naman para lang sa sariling interes. Pero iba kami. Bilang mga estudyante ng Masang Komunikasyon o mga future media practitioner buhay namin 'to. Hindi ko alam kung paano mabuhay kung walang camera sa tabi ko. Nakikinita ko na kung gaano ka-dull ang mundo kung wala 'to. Kaya naman BOW talaga kami sa mga henyong nag-alay ng buhay, dugo't pawis, oras at pagod na gumawa ng camera. Ibang klase kayo mga tol!

Disadvantages kung hindi naimbento ang camera:

1. Hindi natin malalaman ang hitsura natin nung mga bata pa tayo.
2. Hindi natin malalaman ang hitsura ng isang lugar unless makita natin ito ng personal.
3. Maraming krimen ang hindi malulutas.
4. WALA nang matitirang mga alaala.
5. BORING na ang buhay. :(

Sa kabila ng lahat ng ito hindi pa rin maiiwasan ang mabilis na pag-inog ng mundo at pagbabago ng panahon. Marami ng iba't ibang uri ng camera. Kung dati kasing laki ito ng buong kwarto, ngayon may kasing laki na ng langaw. Ganun na kalayo ang nararating ng teknolohiya pagdating sa inobasyon ng camera.

Ngunit dalawang uri ang talaga namang tumatak sa isip ng marami sa atin. Ito ay ang SLR o Single-Lens Reflex camera at ang makabagong DSLR o Digital Single-Lens Reflex camera. But of course, hindi natin malalaman kung ano nga ba ang mas maganda sa dalawang camera kung ni hindi nga natin alam ang pinagkaiba nila.

Kaya naman alamin muna natin kung anu-ano yung mga features, advantages and disadvantages sa pagamait ng mga ito. Simulan natin sa mas naunang likahain. Ang SLR....


According to Wikipedia, SLR is a camera that typically uses a mirror and prism system (hence "reflex", from the mirror's reflection) that permits the photographer to view through the lens and hence see exactly what will be captured, contrary to view finder cameras where the image could be significantly different from what will be captured.

Common Features:

Other features found on many SLR cameras include through-the-lens (TTL) metering and sophisticated flash control referred to as 'dedicated electronic flash'. In a dedicated system, once the dedicated electronic flash is inserted into the camera's hot shoe and turned on, there is then communication between camera and flash. The camera's synchronization speed is set, along with the aperture. Many camera models measure the light that reflects off of the film plane, which controls the flash duration of the electronic flash. This is denoted TTL flash metering.
Some electronic flash units can send out several short bursts of light to aid the autofocus system or for wireless communication with off-camera flash units. A pre-flash is often used to determine the amount of light that is reflected from the subject, which sets the duration of the main flash at time of exposure. Some cameras also employ automatic fill-flash, where the flash light and the available light are balanced. While these capabilities are not unique to the SLR, manufacturers included them early on in the top models, whereas the best rangefinder cameras adopted such features later.

 Advantages:

Many of the advantages of SLR cameras derive from viewing and focusing the image through the attached lens. Most other types of cameras do not have this function; subjects are seen through a viewfinder that is near the lens, making the photographer's view different from that of the lens. SLR cameras provide photographers with precision; they provide a viewing image that will be exposed onto the negative exactly as it is seen through the lens. There is no parallax error, and exact focus can be confirmed by eye — especially in macro photography and when photographing using long focus lenses. The depth of field may be seen by stopping down to the attached lens aperture, which is possible on most SLR cameras except for the least expensive models. Because of the SLR's versatility, most manufacturers have a vast range of lenses and accessories available for them.
Compared to most fixed-lens compact cameras, the most commonly used and inexpensive SLR lenses offer a wider aperture range and larger maximum aperture (typically f/1.4 to f/1.8 for a 50 mm lens). This allows photographs to be taken in lower light conditions without flash, and allows a narrower depth of field, which is useful for blurring the background behind the subject, making the subject more prominent. 'Fast' lenses are commonly used in theater photography, portrait photography, surveillance photography, and all other photography requiring a large maximum aperture.

Disadvantages:
In most cases, single-lens reflex cameras cannot be made as small or as light as other camera designs — such as rangefinder cameras, autofocus compact cameras and digital cameras with electronic viewfinders (EVF) — owing to the mirror box and pentaprism/pentamirror. The mirror box also prevents lenses with deeply recessed rear elements from being mounted close to the film or sensor unless the camera has a mirror lockup feature; this means that simple designs for wide angle lenses cannot be used. Instead, larger and more complex retro focus designs are required.
http://upload.wikimedia.org/wikipedia/commons/thumb/a/a9/Pentax_super_me_open_back.gif/220px-Pentax_super_me_open_back.gif
http://bits.wikimedia.org/static-1.20wmf8/skins/common/images/magnify-clip.png
During an exposure, the viewfinder is blocked
The SLR mirror 'blacks-out' the viewfinder image during the exposure. In addition, the movement of the reflex mirror takes time, limiting the maximum shooting speed. The mirror system can also cause noise and vibration. Partially reflective (pellicle) fixed mirrors avoid these problems and have been used in a very few designs including the Canon Pellix and the Canon EOS-1N RS, but these designs introduce their own problems. These pellicle mirrors reduce the amount of light travelling to the film plane or sensor and also can distort the light passing through them, resulting in a less-sharp image. To avoid the noise and vibration, many professional cameras offer a mirror lock up feature, however, this feature totally disables the SLR's automatic focusing ability. Electronic viewfinders have the potential to give the 'viewing-experience' of a DSLR (through-the-lens viewing) without many of the disadvantages. More recently, Sony have resurrected the pellicle mirror concept in their "single-lens translucent" (SLT) range of cameras





Punta naman tayo sa Digital Single-lens Reflex Camera:

Digital single-lens reflex cameras (also named digital SLR or DSLR) are 
digital cameras combining the parts of a single-lens reflex camera (SLR) and a digital camera back, replacing the photographic film. Features like live previewHD video recording with contrast detection autofocus or ergonomic integration like dedicated film speed (ISO) buttons took further advantage of the digital image sensor. Although the term DSLR often refers to cameras that resemble 35 mm format cameras, some medium format cameras are alsoDSLRs.

Features:

1. Pentaprism
2. Sensor size and image quality
3. Depth of field control
4. Angle of view
5. Mode dial
6. Dust reduction system
7. Medium format digital

Advantages:
1. Built for speed
2. A lens for every occasion
3. High quality in Low light
4. Having a control in taking pictures

Disadvantages:
I found another blog site that tackles disadvantages of using a DSLR..
Here it is..

No Movie Clip Mode 
Camera shoppers are often surprised to learn that the coveted digital SLR camera that they are looking into purchasing does not have the movie clip mode. If you looking at a Canon Digital Rebel series camera, or perhaps a Nikon SLR, you won't find the popular mini movie clip mode. This mode is reserved for the smaller point and shoot style digital cameras.
If you opt for a digital SLR, you'll have to remember to pack your video camera when you want to capture both still and moving memories.
No Live Image Preview 
While looking at the LCD screen on the back of a digital SLR camera, you will notice that it does not show you a live preview of the picture as you compose the shot. You will need to use the optical viewfinder to size up your picture.
However, a brief moment after you click the shutter button, your captured image will be displayed on the LCD screen for you to view. If you decide the shot is no good, take another while you are still "in the moment". You can delete the less desirable images later.
Digital SLR Cameras are Not Cheap 
As you browse over a display of digital cameras, you'll notice the price tags get a little larger as the sizes of the cameras increase. The larger SLR digital cameras can start as low as $500-600, and go up into the thousands. A typical digital SLR camera kit with a lens and battery to get started will be at least $1000.
This hefty price tag is a far cry from the cute $199 compact digital camera models in the same display case.
Although the price of a digital SLR camera is higher than the point and shoot digital camera varieties, the options, features and image quality is also greater.
Digital SLR Cameras are Heavy 
Before you point at the deluxe camera package and say "bag it up" to the sales clerk, be sure you take a moment to hold your future camera. Compared to the credit card sized compact digital cameras, the digital SLR cameras can be surprisingly heavy, especially when a long lens is attached


Nitong nakaraan lamang, ni-require kami ng professor sa Photography na gumamit ng isang manual film-based na SLR camera. Sa tinagal tagal ko na bilang amateur photographer, noon ko lang naranasan na gamitin yun. Sanay naman ako sa DSLR kasi yun na talaga ang uso at yun na rin ang ginagamit ng karamihan sa ngayon.

Nung una, natawag ko na yata ang lahat ng santo para lang tulungan ako. Unti-unti na ring naubos ang pasensya ko sa naturang camera. Kung sa DSLR makikita mo na agad kung anong hitsura ng kuha mo, sa SLR kailangan pang mag-intay na ma-develop ang mga pictures

Subalit matapos ang isang linggo ng paggamit, maraming bagay akong na-realize. Una, kung talagang gusto mong maging isang magaling na photographer, kailangan matuto kang maghalo at magtantiya ng shutter speed at aperture size. Pangalawa, hindi dapat tayo umaasa sa automatic. Kailangan nating maging puhunan ang paggamit ng manual. Huli, hindi mabubuo ang ano mang nagpipitagang mga DSLR ngayon kung walang SLR na pundasyon ng lahat. 

Kaya matuto tayong maka-appreciate ng mga bagay kahit na mayroon ng pumalit na mas maganda. Hindi por que laos na ang isang bagay ay wala na itong pakinabang. Tandaan na ang lahat ay nagmula sa ating kasaysayan. At isang kasaysayang maituturing ang pagkakabuo sa SLR cameras. Pahalagahan natin ang mga ito.

Remember: wala yan sa camera, nandun yan sa kumukuha.. :))


Reference    : www.google.com
                   : www.wikipedia.com
Images:     www.google.com

By: Evangeline Ajero
Student number: 201010811





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