Date post: | 17-May-2015 |
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Art & Photos |
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‘‘DDigital igital CCameras’ameras’
& ‘ & ‘DDigitaligital
PPhotographyhotography’’
I’m not sure we are going to I’m not sure we are going to be ablebe able
To get through everything. . . To get through everything. . .
…with
Aims & ObjectivesAims & Objectives
• To show you how to use your camera
• Give you some tips on how to take a better shot
• Pass on my love and enthusiasm for digital photography
• Encourage you to do more with the photos once you’ve taken them
12 Apr 2023 Cosmic 2009 2 where?
12 Apr 2023 Cosmic 2009 2 - Aims
““Subject Subject Headings”Headings”
•Where did they come from…?•Using your camera•You’ve seen a camera….•Taking a good picture•What to do with your photos afterwards •Photo shoot •Picasa
Where did they come from and what Where did they come from and what is going on?is going on?
12 Apr 2023 Cosmic 2009 4 slides
12 Apr 2023 Cosmic 2009 1/4
““...did you know?”...did you know?”
•It all started with NASA•One of the uses of these satellites was to spy on the enemy – 1959-1972 •Beaming photographs back to Earth, using ‘Digital Technology’.•The ‘Charge-Coupled-Device’, (or CCD) was first demonstrated by Bell Laboratories in 1969•The first images created with CCDs were only 100 x 100 pixels – not very clear •The next goal was to create a better picture, which they successfully did in 1978 with a pixel array of 500 x 500•Soon after they’d developed 800 x 800 pixels, with a progression towards the development in 1982 of 1024 x 1024 pixels. The results were always a better picture, at a more affordable price
Pixels
12 Apr 2023 Cosmic 2009 2/4
“ “How it Works”How it Works” (Charge Coupled Device)
• When a photo is taken, the CCD is struck by light coming through the camera's lens.
• Each pixel (or tiny ‘dot’ on the CCD’s surface) converts this light into electrons.
• The number of electrons, usually described as the pixel's ‘accumulated charge’ is measured, then converted to a digital value.
• This conversion being undertaken by something called an ‘Analog-to-Digital Converter’
Back
12 Apr 2023 Cosmic 2009 3/4
Here is very simple pictorial representation of a ‘CCD’ in action.
This ‘CCD’ has a resolution of (12 x 12) 144 pixels. Each dot that makes
up the man is 1 ‘Pixel’.Because the ‘resolution’ is so low the
image has very limited detail.
“…“…Pixels” –Pixels” – ‘Mega’ or otherwise
Back
12 Apr 2023 Cosmic 2009 4/4 – Using camera
•The image resolution tells us how many of those pixels an image contains•Your camera might have a setting which will allow you to change the final photos physical size•You should also have a setting to change the final photos resolution•To print out a photo to a decent quality or to a large size a high resolution is required. This will make the file size of the image larger•If you start off with a high resolution picture it is easy to remove pixels (ie lessen the resolution)•If you start off with a low resolution picture it is harder (near impossible) to add more pixels and keep the quality high•Related topics: Memory size, how many pictures do you want to take?
““Come the Resolution Comrade!”Come the Resolution Comrade!”
Using Your CameraUsing Your Camera
12 Apr 2023 Cosmic 2009 3 slides
12 Apr 2023 Cosmic 2009 1/3
“…“…Take Control!”Take Control!” Learn those settings
Video. Digital cameras can capture video. Get a large storage card (2 or 4GB’s) to give you enough recording time.
Macro/Close-Up. This mode is used for taking close-up pictures.
Night Time. Sets longer exposures to capture darker scenes. Usually used with flash, and some nice motion effects can be created.
Portrait. To attempt to blur out the background the camera will try to use the fastest available lens setting (aperture).
Landscape. The camera will attempt to capture detail in foreground and background by using high f-stop (aperture) settings.
Sports. To freeze motion the camera will use the highest shutter speed possible.
Stitch. For creating multi-shot panoramas. This mode will help to combine several shots into one wide scene.
12 Apr 2023 Cosmic 2009 2/3
“… “…Zooooooooom!”Zooooooooom!” Optical V Digital• Optical zoom lenses actually “move” you closer to the subject of the
photograph without sacrificing quality. • The higher the optical zoom rating on a camera, the farther away you can
be to take a photograph and still get a clear, close-up image. • The concept of optical zoom essentially the same as the zoom on a film
camera. • Optical zoom is the number you want to pay close attention to--it’s the zoom
that will give you the quality results you want.
• Digital zoom on the other hand is not bringing you closer to the item.• The camera crops the entire image, and then digitally enlarges to the size
of the viewfinder the portion you want to zoom in on. • This results in a loss of quality, and is no different than cropping and
enlarging an image with editing software. • When you use digital zoom on the camera, the image quality is irreversibly
lost.
The Internal MenuThe Internal Menu
12 Apr 2023 Cosmic 2009 3/3 - Coffee
The cameras internal menu
gives you access to
many important
adjustments…
…Image size & resolution, WB, ISO, and creative settings
Coffee?Coffee?12 Apr 2023 Cosmic 2009 11:30 ish - You’ve seen…
You’ve seen a camera, but what about You’ve seen a camera, but what about those extras!those extras!
12 Apr 2023 Cosmic 2009 4 slides
12 Apr 2023 Cosmic 2009 1/4
Which Camera would I Which Camera would I buy?buy? ……what to what to consider consider
•Its cost!•The number of ‘Mega-Pixels’•Its lens•Optical Zoom figure•The features•View finder or not•Have you picked it up?•Is it easy to use?
12 Apr 2023 Cosmic 20092/4
2 on Memory cards
Storage media?Storage media?
Memory cards.Your camera probably came with a memory card. What’s a memory card? When you take a photo with a digital camera, most cameras store the images on a memory card.
N.B. The 32MB card they supply with the camera when you first buy it isn’t going to let you store very many pictures at all!
…throw it into your camera bag and forget it!!
12 Apr 2023 Cosmic 2009 3/4
Modern memory cards come in different formats, ‘SD’ and ‘CF’ cards being the most popular in sizes of up to 64GB!
“…“…don’t forget extra memory!”don’t forget extra memory!”
1 gigabyte = 1,000,000,000
bytes (or one billion
bits of information)
Consider:Speed as well
as size!
“…Batteries, so?”
12 Apr 2023 Cosmic 2009 4/4 - Taking a good picture
• Batteries?• How many?• Which type?• What sort of charger?• How many to take with me?• How much life have you left in
your current batteries?
Taking a good pictureTaking a good picture
12 Apr 2023 Cosmic 2009 2 slides
12 Apr 2023Cosmic 2009
1/2
•Luck! •Being in the right place at the right time•A good camera, with a good lens helps•A good eye for a photo in the first place helps!•But most of all…
KNOW YOUR CAMERA!
““...to take a good photo”
12 Apr 2023 Cosmic 2009 2/2 – What to do
““TIP-TOP TOP-TIPS!”TIP-TOP TOP-TIPS!” …Know your camera? Experiment with it - have a play! ‘A’ for Auto The ‘Auto’ function is designed to calculate the average everything.Learn all about your own camera! Be adventurous! Use your Manual setting or creative settings Set your camera up for the day before you go out!Try not to use a flash, use natural lightDon’t forget to order a new, larger storage cardLearn how to review/delete your imageAlways have your camera take the largest images possibleBe wary of buying low cost digital cameras Think before you zoom! Frame your image - think about leading the eyeAvoid printing out your pictures on plain paper!
12 Apr 2023 Cosmic 2009 3 slides
What to do What to do with yourwith your
photos photos afterwardsafterwards
12 Apr 2023 Cosmic 2009 1/3
“…“…Printing?”Printing?”• Why!• Image resolution • Photo printer • Photographic paper • As for which printer to buy,
consider:– Cost?– Cartridges?– Combined? – Consult!
Don’t forget the cartridge costs!
“…“…Other options”Other options”
• Your local chemist
• Digital photo frames
• Online photo printing
• Slideshows on the computer
• Online galleries
• Emailing as attachments
12 Apr 2023 Cosmic 2009 2/3
12 Apr 2023 Cosmic 2009 3/3Lunch!
After Lunch…After Lunch…
• Photo shoot• Download images• Introduce ‘Picasa’• Q+A• Play-time!
12 Apr 2023 Cosmic 2009 26
Lunch?Lunch?
12 Apr 2023 Cosmic 2009 4/6
“… “…Picasa”Picasa” - not Picasso! Find, organise and share your
photos.
Picasa is a free software download from Google that helps you:
Locate and organise all the photos on your computer.
Edit and add effects to your photos with a few simple clicks.
Share your photos with others through email, prints and on the
web: it’s fast, easy and free!
12 Apr 2023Cosmic 2009
5/6
www.picasa.com
“…“…Where to get ‘Picasa’ Where to get ‘Picasa’ from?”from?”
(Click Logo to link to site)
12 Apr 2023 Cosmic 2009 6/6 Lunch 13:15 ish
Main display screen
What is Picasa?What is Picasa?
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