underwater camera 50 meter image
reza_sadeg
Answer
The Canon Powershot A610
combines 5 megapixels, 4 x optical /4x digital zoom and a flip-out and twist 2" LCD screen. Use in easy point and shoot mode, or assume full manual (creative) control.
This camera offers a comprehensive range of versatile shooting modes, high speed start up, fast auto focus and superior image quality.
Available now.
What's in the box?
Canon Powershot A610 Digital Camera
Wrist Strap
4 x AA Alkaline Batteries (not rechargeable)
USB Cable
AV Cable
16mb Secure Digital Card (approx 6 photos)
Instructions
Software
Full Specifications of the Canon Powershot A610 (from Canon Australia)
CCD:
Size:
1/1.8 inch
Effective Number of Pixels:
Approx. 5.0 MP
Total Number of Pixels:
Approx. 5.3 MP
Filter Array:
Primary colour filter (Bayer)
Image Processor:
Processor:
DiG!C II
Lens:
Focal Length (optical):
7.3(W) - 29.2(T)mm
35mm film equivalent:
35 - 140mm
Maximum Aperture:
f/2.8(W) - f/4.1(T)
Construction:
8 elements in 7 groups(including 2 aspherical lens)
Optical Zoom:
Approx. 4x
Digital Zoom:
Approx. 4x
Max Combined Zoom:
Approx. 16x
Focusing Method:
TTL Autofocus
9-point AiAF/1-point AF*
*Focusing frame move as desired or fixed to centre
Manual focus available, AF Lock available.
Focusing Range of the Canon Powershot A610:
Normal:
45 cm - infinity
Macro:
1 - 45 cm (W), 25 - 45 cm (T)
Manual focus:
1 cm - infinity (W), 25 cm - infinity (T)
Control/Balance:
Light Metering Method:
Evaluative, Centre-weighted average, Spot* Metering frame: fixed to centre or linked to AF frame, selectable.
Exposure Control Method:
Program AE, Shutter speed-priority AE, Aperture-priority AE, Manual
Exposure Compensation:
± 2 stops in 1/3-stop increments
White Balance Control:
TTL White Balance
White Balance Modes:
Auto, pre-set (Daylight/Cloudy/Tungsten/Fluorescent/Fluorescent H), Custom
Shutter Speed :
15 - 1/2500 sec.
Sensitivity (Equivalent Film Speed):
Auto / ISO 50 / 100 / 200 / 400 equivalent
LCD Monitor/Viewfinder:
Viewfinder:
Real-image optical zoom
LCD Monitor:
2.0 inch Low-temperature polycrystalline silicon TFT colour LCD
Flash:
Flash Modes:
Auto*, On*, Off (* Red-eye Reduction is available.)
Flash Range Normal:
45 cm - 4.2m (W), 45 cm - 3.0 m (T),
Flash Range Macro:
25 - 45 cm (macro) (at ISO equivalent:Auto)
Selectable Shooting Modes:
Shooting Modes:
Auto / Creative zone: P, Tv, Av, M / Image zone: Portrait, Landscape, Night scene, Stitch Assist / Movie / Special Scene Mode: (Foliage, Snow, Beach, Fireworks, Underwater, Indoor, Kids and Pets, Night Snapshot)
Photo Effects Mode:
Vivid, Neutral, Low sharpening, Sepia, Black & White
Continuous Shooting of the Canon Powershot A610:
Normal:
Approx. 2.4 shots/sec.
Large/Fine mode, when LCD monitor is turned off]
Image Recording Format:
Image File Format:
Design Rule for Camera File System,
DPOF Version 1.1 compliant
Still image:
JPEG (Exif 2.2 compliant)
Movie:
AVI Image data: Motion JPEG
Sound annotation/Audio Data:
WAVE (monaural)
JPEG Compression Levels:
Superfine / Fine / Normal
Recording Pixels - Still Images:
Large:
2592 x 1944
Medium 1:
2048 x 1536
Medium 2:
1600 x 1200
Small:
640 x 480
Recording Pixels - Movie Images:
Large (VGA):
640 x 480 15 fps
Medium (QVGA):
320 x 240 30/15 fps
Small (QQVGA):
160 x 120 15 fps
Still Image Storage Capacity (with supplied memory):
Large:
Large/Super Fine 11 images
Large/Fine 20 images
Large/Normal 40 images
Middle:
Middle1/Super Fine 17 images
Middle1/Fine 32 images
Middle1/Normal 63 images
Middle2/Super Fine 28 images
Middle2/Fine 51 images
Middle2/Normal 97 images
Small:
Small/Super Fine 109 images
Small/Fine 168 images
Small/Normal 265 images
Movie Storage Capacity (with supplied memory):
Movie Large (VGA):
640 x 480 Approx. 14 sec 30fps
[max. approx. 30 sec. per recording]
Movie Middle (QVGA):
320 x 240 Approx. 21 sec 60fps
[max. approx. 3 min per recording]
Movie Small (QQVGA):
160 x 120 Approx. 1 min 24 sec 15fps
[max. approx. 3 min per recording]
Frames Per Second:
15 or 30 depending on resolution
Other Operations of the Canon Powershot A610:
Playback Operations:
Single / Index (9 thumbnail images) / Slide Show / Movie Special Replay - Next frame, Previous frame, Fast forward, Rewind, First frame and Last frame / Magnify (2x - 10x) / Auto vertical and horizontal image orientation with Intelligent Orientation Sensor / Still histogram display.
File Operations:
DPOF - Print Order/Image transfer, Movie - unnecessary scenes can be erased. Sound Annotations - max. record/play time is approx. 60 sec
Direct Printing:
Yes
PictBridge:
Yes
Print/Share Button:
Yes
ID Photo Print:
Yes (with compatible Canon Compact Photo printers)
Movie Print:
Yes (with compatible Canon Compact Photo printers)
Camera Settings:
Start-up image/Start-up sound/Shutter sound/Operation sound/Self-timer sound
Menu Languages:
22 languages (English, German, French, Dutch, Danish, Finnish, Italian, Norwegian, Swedish, Spanish, Simplified Chinese, Russian, Portuguese, Greek, Polish, Czech, Hungarian, Turkish, Traditional Chinese, Korean, Thai and Japanese)
Self-timer:
Approx. 2 sec. or 10 sec. count-down or Custom
Interface:
Computer I/F:
USB
Video Output:
PAL or NTSC selectable
Audio Output:
Monaural
Memory Storage:
SD Memory Card / MultiMedia Card
Supplied Memory:
16MB
Supported Operating Systems of the Canon Powershot A610:
PC:
Windows 98 (including SE)/ME/2000 SP4/XP (SP1, SP2)
Mac:
Mac OS X v10.2 - v10.4Inclusions
Software:
Canon Digital Camera Solution Disc
Power Source of the Canon Powershot A610:
Battery:
AA Alkaline battery (x4) or AA rechargeable NiMH battery (x4) (NB-2AH is recommended)
Optional Charger/AC Adaptor:
CBK4-200 / Adaptor Kit ACK-800 (contains Compact Power Adaptor CA-PS800)
Shooting Capacity (full charge):
LCD Monitor On:
Approx. 500 shots by AA NB-2AH NiMH batteries (CIPA standard)
Approx 350 shots by AA Alkaline batteries (Panasonic) (CIPA standard)
LCD Monitor Off:
Approx. 1200 shots by AA NB-2AH NiMH batteries (Canon measuring standard)
LCD Monitor Off 1500 shots by AA Alkaline batteries (Panasonic) (Canon measuringstandard):
Replay:
Approx. 300 min. by AA NB-2AH NiMH batteries
Dimensions / Weight of the Canon Powershot A610:
Temperature:
0 - 40 °C
Humidity:
10 - 90 %
Dimensions (W x H x D):
104.8 x 66.0 x 49.1mm (ex protrusions)
Weight:
Approx. 235g (camera body only)
Landscape /underwater photography?
eccho75
What's the dealio with cameras.
When i look for one for either Landscape photography or underwater photography what should i be looking for?
If bigger MegaPixels= higher resolution does that equal more definition in the image?
Can anyone recommend cameras for under 400$ or specific lenses or filters? Would a polarised filter be useful for landscape? are they costly ?
Are these too many questions :| ?
ill be literally underwater :)
Ah thanks for the recommendation.
I've done manual photography and worked with film for two years but i cant afford the constant film, i don't have a darkroom and it's too expensive for me to get my photos developed at a lab. So i thought i would invest in a good digital SLR.
Problem is .....i don't know what to look for ....
Answer
You are looking at two very different kinds of photography. However, with the right equipment one camera can be used for both.
Your idea of investing in a DSLR is correct. It merely becomes a question of which DSLR. Since you've used a film camera the transition will be much easier for you. If you have several lenses for your film camera then you'd be smart to stay with that same brand of DSLR - unless your film camera is a Canon F series which used the FD lens mount or an Olympus OM series or a Minolta SRT or X series. Unfortunately lenses for those cameras are not compatible with their current DSLR counterparts.
When Canon introduced the auto focus Rebel 35mm film cameras they abandoned the FD lens mount for the EF mount.
When Minolta introduced the world's first full-featured auto focus 35mm SLR (the Minolta Maxxum 7000, 1985) they abandoned the SR lens mount for the A-mount. The current Sony DSLR cameras use the A-mount.
When Olympus adopted the 4/3 format for their DSLR cameras they abandoned the OM mount.
Nikon has lens compatibility dating back almost 50 years. Almost every Nikkor lens ever made can be used with the current Nikon DSLR cameras.
Pentax is still using the K-mount first introduced in 1975 so any K-mount lens ever made can be used on their current DSLR cameras.
One bonus offered by Sony and Pentax is they have their respective versions of Image Stabilization (IS) in the camera body. That means that a 20 + yr. old Minolta maxxum AF lens on a Sony A300 will become an IS lens, just a a 30 + yr. old Pentax lens will on a Pentax K200D. Nikon and Canon can't make that claim since they have their respective versions of IS only in certain lenses.
Now back to landscapes and underwater photography.
For landscapes a tripod is one of the best accessories you can have. A good wide-angle is also needed. You also need to know how to maximize your Depth of Field (DOF) with your camera and lens. One of the best places to learn this is at: http://www.dofmaster.com/dofjs.html Here you can calculate DOF for any lens. f-stop, focal length and subject distance.
If you're unsure as to what DOF actually is go to: http://www.dpreview.com/learn/?/key=depth+of+field This is a good, eay to understand explanation.
I know from yrs. of experience that if I focus my 21mm lens at 6 feet and use f16 my DOF will be from 2'-2" to infinity. I shoot in Aperture Priority and use a cable release to trip the shutter. The shutter speed is whatever the camera sets and since I use a trpod its not important. Obviously you'll want to be in manual focus since you probably won't have a subject 6 feet away in your landscape.
(NOTE: Shutter speed would, of course, be important if its a windy day. Then I might use a higher ISO since I refuse to give up f16).
So for the best results in landscape photography:
1) Use a tripod
2) Shoot at your camera's highest resolution
3) Use a low ISO
4) Use Aperture Priority
5) Use manual focus
6) Use a cable release or the camera's self-timer to release the shutter
For underwater photography you'll need an underwater housing for your camera. These are very pricey. You can check here:
http://www.scuba.com
http://www.marinevisions.com
http://www.housingcamera.com
http://www.squidoo.com/underwatercamerahousings
http://www.ikelite.com
http://www.ewamarine.com
If you plan to go deeper than a meter or so you'll probably need a waterproof flash or other light source.
In my opinion, unless you plan on doing a whole lot of underwater photography, one of the Olympus Stylus SW series of water proof and shock proof cameras might be a really cheap alternative.
****** EDIT ******
I forgot to mention that every lens you own should have its own UV/Haze filter to protect the front element. You'll also want a circular polarizer to darken a blue sky and remove glare/reflections from glass, water, snow, sand and painted metal - but not from polished metal. I suggest buying your filters in a "thin" or "slim" mount for use with wide-angle lenses. Don't waste money and risk image quality with cheap filters. Buy Hoya, B+W, Heliopan or Tiffen brands. Add a lens cloth and you're good to go.
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