Question about Olympus Camedia C-3040 Zoom Digital Camera

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How does the ISO work on a Digital Camera

How exactly does a ISO 100, 200, 400 rating work on digital camera. When it is in auto mode what the camera use to decide what ISO to use?

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Re: How does the ISO work on a Digital Camera

Basicly the charge in each pixel on the CCD chip is sent to another chip that converts it to a number. The charge can be amplified before conversion to get larger numbers. The more the charge is amplified the higher the ISO rating, the problem is that noise is also amplified. Just like if you turn up the volume on a weak AM radio station the static is also louder. I'm not sure how the cameras decide on what ISO to use in auto mode, each one is probably programed a little different.

Posted on Sep 11, 2005

Re: How does the ISO work on a Digital Camera

The iso works on the available light the less light the higher the iso will be

Posted on May 04, 2008

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Re: How does the ISO work on a Digital Camera

The ISO in the camera on Auto mode is selected based upon light levels and on the focal length of the lens. This is adjusted slightly depending upon wich mode you are in. For instance, if you zoom in close to something and lighting is not too good, it'll bump the iso up to 400 or 800 depending upon the camera. Judging from ISO levels in my camera on auto mode, it appears that olympus has developed an program that sets ISO just high enough to offset camera shake based on focal length.

Posted on Sep 11, 2005

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informatica
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SOURCE: instuction manual for a Camedia Digital Camera C-725 Ultra Zoom

Hi - You can download the manual by clicking the link underlined in blue below:

C-725

3454d19.jpg

Please take a moment to rate this solution & let us know if the information given was useful to you - Good Luck!

Informatica

Posted on Sep 11, 2008

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SOURCE: Computer is not reading USB cable for digital camera

see many a times the drivers files are corrupted after a particular period of time due to loading of some other softwares or programs getting crosslinked with few necessary files.i would suggest you to uninstall the driver completely first then install it fresh again.its a common problem and will get solved after reloading fresh drivers again.thanks.

Posted on Jul 08, 2009

richard191
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SOURCE: Hi Ive got an Olympus SP-550UZ digital Camera

Hello

Thank you for using FixYa for your problem

Always check the batteries first but if is it still giving the same fault, your camera is faulty. "Zoom error" is repairable
It should be taken to an authorized repair centre for a repair estimate. Very few digital cameras have any user-serviceable parts.

Please rate our solutions and if you still have problems please call back for more ideas to help you

Thanks
Richard Scott
Technical Support
New Zealand

Posted on Feb 21, 2010

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1 Answer

Indoor pictures often are blurry


It could be because of wrong ISO setting or you might have deactivated the flash. if you are sure those are not the case and if you are useing auto mode then there might be a problem with ISO choosing functionality of the camera. in auto mode usually all the settings are chosen automatically.

dont hesitate to ask.
Your positive rating is most apreciated!

Jun 16, 2010 | Panasonic Lumix DMC-FZ7 Digital Camera

1 Answer

Nikon D80 won't allow use of auto ISO


Hi kathlag96, page 43 of the manual state that Auto ISO works in the Vari-Program modes. Page 88 item 7: explains Auto ISO does not work in the P, S, A, M modes

Jun 07, 2010 | Nikon D80 Digital Camera with 18-135mm...

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How do I turn my Auto ISO off? I can't get a cust...


Hi Sandy, Page 43 of the D80 manual explains about Auto ISO. It works in the Vari-Program modes. In one of those modes turn on your menu go to Shooting Menu, move down to ISO sensitivity, this is where you can set Auto ISO to on or to a select ISO.

May 21, 2010 | Nikon D80 Digital Camera with 18-135mm...

1 Answer

Finepix E550 -suddenly very grainy photos and over exposed?


Have you checked what ISO you have selected here?
Graininess and over exposure can be caused by selecting the wrong ISO ( which in film days was ASA ( film speed) The average ISO should be 100 some early models allowed ISO 64 or similar. Having it set at 400 -800 ISO can also have the pics come out grainy. But not nescessarily overexposed unless you point directly at the light source as these ratings are for low light/movement situations. The video mode usually sets itself up differently to picture mode. The fact that you say your video is OK says there is nothing wrong with the lens or sensor, just the settings you have initially chosen to have autoed.


Please rate our help to keep thye service online++++Thanks for using FIXYA

Sep 19, 2009 | Fuji FinePix E550 Digital Camera

2 Answers

How to adjust the ISO from 100


All of the AUTO ISO settings would be harder to figure out if you couldn't set an ISO range for the camera to use, but with the K20D you can:
  1. Press the Fn button
  2. Press the right directional arrow to select the ISO setting
  3. Set the ISO to AUTO
  4. Turn the front control dial to set the MINIMUM ISO the camera will use
  5. Turn the rear control dial to set the MAXIMUM ISO the camera will use
In this sense, you can set the AUTO sensitivity of the camera to range between ISO 100 and 400 or even ISO 800 to 6400 (if you so desire).
Of course, this assumes that you'll want to have this level of control over ISO, aperture and shutter speed.
If you don't have a good command of these controls and really never want to, then the K20D has a ton of modes and features that you'll simply never use.
Please rate the help to keep the FREE service online ++++

Aug 31, 2009 | Pentax K20D Digital Camera

1 Answer

Underexposed image on Auto mode


You can change the ISO setting also to Auto. If you have the advanced guide (see pp 80, 107).
Press the ISO button it will switch from various ISO setting to AUTO.

Do remember in Bright light , a lower ISO number like 80 will give you very fine images, while as the light level goes down, the ISO number will change to a higher number and the image will become more grainer.
I hope I could answer to your query.
Please do rate. Thanks

Jan 14, 2009 | Canon PowerShot S5 IS Digital Camera

1 Answer

My photos are always blotchy and unclear


I had the same issue mate, I found that because this camera is ISO1600 i had set ISO800 in the automatic mode. Yes! in automatic mode you can still change the ISO ratings, I had set it to 800 which screwed all my photos.

Now i have set it to Auto and the camera is back to its excellent form.

I know F10 was sold as ISO1600 camera and most users tried to use highest ISO and failed.

Its an excellent camera just dont use high iso

Aug 22, 2008 | Fuji FinePix F10 Digital Camera

2 Answers

Dark Images


Even in automatic mode, camera still lets you pick what ISO to use. If ISO-Auto is OFF in camera menus, this can give some dark images. Press and hold ISO button and rotate command dial to give a higher ISO, or turn ISO-Auto on in camera menu with crayon icon. Also note that the camera saves exposure compensation setting for each mode,

May 09, 2008 | Nikon D40x Digital Camera

1 Answer

What are the available ISO rating for the DiMAGE A2?


The DiMAGE A2 sensitivity can be set to Auto, ISO 64, 100, 200, 400, and 800. When Auto is selected, the camera automatically controls the sensitivity within the range of ISO 64-200.

Sep 15, 2005 | Konica Minolta DiMAGE A2 Digital Camera

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