Hello,
I have, lately, started putting up blogs related to Digital Photography.
Hope they are of some use.
Follow these links...
Sharing your photography work
Digital Camera Basics
Digital Camera Buying Guide
Circular Polarizer Basics
Marumi 72mm Circular Polarizer - Review
Zeikos 72mm close-up lens kit - Review + Close-up Photography Basics
A simple guide to better photographs
My other Blogs
RO water purifier Guide + Kent Pearl RO water purifier review
HDMI cables - Why are they costly?
Two Hours To Go...
Good day.
Wednesday, October 20, 2010
Thursday, October 7, 2010
Digital Camera Basics
In this article we will be learning some fundamentals of a digital camera;
the very basic parts and how it functions.
Lets first list the basic parts and then see how each funtions
(see illustration)
Look at the illustration; the Lens is often a group of glass elements. The shutter mechanism (not shown here) is placed between the lens and the digital image sensor.
Lets see how each of these important parts functions?
The jobs of the Lens is to direct the light reflected from the subject you are photographing on to the digital image sensor.
The Shutter is a complex mechanical diaphragm that is placed between the lens and the digital image sensor and is similar to iris in the human eye. The shutter sets the duration of time for which
the reflected light will fall on the image sensor
The Aperture is the opening in the shutter diaphragm that controls the amount of light reaching the image sensor.
The animation shows how the lens directs the reflected light and then passes through the shutter mechanism. before it falls on the film or digital image sensor.
Digital Image Sensor is a chip that converts light in to electrical signals. The electrical signals are processed by a computer chip (Image processor) and the final image is created.
This image is then stored onto the memory card.
Flash is needed for taking pictures in low light or during night.
Lets summarize the entire operation in 3 lines!
You push the button, the camera sets exposure and focus, light reflected from your subject falls on the image sensor through the lens and aperture, which is then converted to electrical signals by the image sensor. And is then processed to create the final image which gets stored on the memory card.
.
the very basic parts and how it functions.
Lets first list the basic parts and then see how each funtions
(see illustration)
Basic parts
- Lens
- Shutter
- Aperture
- Digital Image Sensor & Processor
- Flash
- Memory card
 |
| Photo courtesy - Aperture Digital Photography Fundamentals. |
Lets see how each of these important parts functions?
The jobs of the Lens is to direct the light reflected from the subject you are photographing on to the digital image sensor.
The Shutter is a complex mechanical diaphragm that is placed between the lens and the digital image sensor and is similar to iris in the human eye. The shutter sets the duration of time for which
the reflected light will fall on the image sensor
The Aperture is the opening in the shutter diaphragm that controls the amount of light reaching the image sensor.
 |
Digital Image Sensor is a chip that converts light in to electrical signals. The electrical signals are processed by a computer chip (Image processor) and the final image is created.
This image is then stored onto the memory card.
Flash is needed for taking pictures in low light or during night.
Lets summarize the entire operation in 3 lines!
You push the button, the camera sets exposure and focus, light reflected from your subject falls on the image sensor through the lens and aperture, which is then converted to electrical signals by the image sensor. And is then processed to create the final image which gets stored on the memory card.
.
Digital Camera Buying Guide
Hello folks,
Good day! I am presenting here a simple guide for those of you planning to buy a digital camera.
There are tons of cameras in the market and I bet you would get lost before you zero down on your choice of digital camera.
This guide will offer you some help.
Points to consider..
--A. Your budjet; Do i need a simple Point & Shoot or a long zoom or a DSLR.
This depends on individual needs.
- If you are looking for a pocketable cameras, or would take pictures occasionally Point & Shoot is your option.
-If you are serious about taking photography as hobby or profession, start with a long zoom and then move on to a DSLR.
--B. Next step is to list your specification.
What do you expect from your camera?
If you are not sure about this, a good Point & Shoot camera will work for you. you might want to check out sites that offer reviews on digital cameras.
I suggested you checkout these websites that offer such reviews (you may want to open the link in a new tab)
http://www.dpreview.com/
http://www.steves-digicams.com/
http://www.digitalcamera-hq.com/
You will need these mininum specifications to choose your camera.
1. MegaPixel. > not less than 5MP (10MP is common today)
More your pixel the better resolution and a bigger print size.
2. Optical Zoom. > 3X or more (some compact model offer 5-7X)
More X means you get more closer to your subject
3. Image Stabilization.
Lets talk a bit about this. If you hear about Image stabilization, Anti-Blur,
Vibration-Reduction & Anti-shake they are all the same.
Its a technology incorporated into the camera to reduce blurred images.
So everytime you shoot you end up with sharp images.
4. Size of the LCD screen.
I recommend a mininum of 2.5inch screen for better previews. Some LCD screen would tilt or swivel which is a good thing because you can shoot low angles with ease. Make sure the LCD is visible under the sun.
5. Flash.
Every Point & Shoot available in the market has in-built flash. Some flash are powerful and hence have better range.
6. Shooting videos.
All Point & Shoot have video recording capability, most will be 640x480p, Standard Definition, thats good for viewing on your TV. If you like to display videos on your High Definition LCD you will need HD 1280x720p or 1920x1080p.
Make sure the frame rate is 24fps or 30fps. This is needed for smooth motion of viewing on your TV/LCD.
7. Accessories
Tripod; you will need a tripod to secure your camera from shakes when shooting in low light or using night mode shooting.
Battery and Memory Cards; Buy spare batteries and memory cards so you dont run out of juice and space!
Finally, try the camera before you buy!
and Thats it! Now you know the minimum requiremenst to look for in your camera.
Happy Buying!
Good day! I am presenting here a simple guide for those of you planning to buy a digital camera.
There are tons of cameras in the market and I bet you would get lost before you zero down on your choice of digital camera.
This guide will offer you some help.
Points to consider..
--A. Your budjet; Do i need a simple Point & Shoot or a long zoom or a DSLR.
This depends on individual needs.
- If you are looking for a pocketable cameras, or would take pictures occasionally Point & Shoot is your option.
-If you are serious about taking photography as hobby or profession, start with a long zoom and then move on to a DSLR.
--B. Next step is to list your specification.
What do you expect from your camera?
If you are not sure about this, a good Point & Shoot camera will work for you. you might want to check out sites that offer reviews on digital cameras.
I suggested you checkout these websites that offer such reviews (you may want to open the link in a new tab)
http://www.dpreview.com/
http://www.steves-digicams.com/
http://www.digitalcamera-hq.com/
You will need these mininum specifications to choose your camera.
1. MegaPixel. > not less than 5MP (10MP is common today)
More your pixel the better resolution and a bigger print size.
2. Optical Zoom. > 3X or more (some compact model offer 5-7X)
More X means you get more closer to your subject
3. Image Stabilization.
Lets talk a bit about this. If you hear about Image stabilization, Anti-Blur,
Vibration-Reduction & Anti-shake they are all the same.
Its a technology incorporated into the camera to reduce blurred images.
So everytime you shoot you end up with sharp images.
4. Size of the LCD screen.
I recommend a mininum of 2.5inch screen for better previews. Some LCD screen would tilt or swivel which is a good thing because you can shoot low angles with ease. Make sure the LCD is visible under the sun.
5. Flash.
Every Point & Shoot available in the market has in-built flash. Some flash are powerful and hence have better range.
6. Shooting videos.
All Point & Shoot have video recording capability, most will be 640x480p, Standard Definition, thats good for viewing on your TV. If you like to display videos on your High Definition LCD you will need HD 1280x720p or 1920x1080p.
Make sure the frame rate is 24fps or 30fps. This is needed for smooth motion of viewing on your TV/LCD.
7. Accessories
Tripod; you will need a tripod to secure your camera from shakes when shooting in low light or using night mode shooting.
Battery and Memory Cards; Buy spare batteries and memory cards so you dont run out of juice and space!
Finally, try the camera before you buy!
and Thats it! Now you know the minimum requiremenst to look for in your camera.
Happy Buying!
Sharing your Photography
Hello folks,
As a photographer, we should be selling ourself to convice others about our ability.
One important aspect of this is sharing your work. Lets talk about some sharing etequette.
This is not about how to share but what to share.
"Wait, I have just started on this hobby, am I a photographer?" Good question
Well the answer is YES!. If you are going to take pictures and would share them with friends or family, congratulations! you are a photographer!
!SHARING!
"Share only photos which you think is the best of the lot".
Nobody has the time to look at all your 1000+ shots from a single trip!. Its good to shoot a lot of photos but share only a little. Share the ones which you personaly liked very much and believe me, the response from your friends and family would be better.
By sharing only a few and good photos you are promoting yourself as a good photographer!
As a photographer, we should be selling ourself to convice others about our ability.
One important aspect of this is sharing your work. Lets talk about some sharing etequette.
This is not about how to share but what to share.
"Wait, I have just started on this hobby, am I a photographer?" Good question
Well the answer is YES!. If you are going to take pictures and would share them with friends or family, congratulations! you are a photographer!
!SHARING!
"Share only photos which you think is the best of the lot".
Nobody has the time to look at all your 1000+ shots from a single trip!. Its good to shoot a lot of photos but share only a little. Share the ones which you personaly liked very much and believe me, the response from your friends and family would be better.
By sharing only a few and good photos you are promoting yourself as a good photographer!
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