Question about Sony Cyber-Shot DSC-S75 Digital Camera

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S75 Can firmware be set for ISO 50?

Here is a question that I don't believe I've seen before. Pardon my inexperience, but a lot is said over at the Canon forum about the G1's capability for an ISO 50 setting to achieve astoundingly low noise. I believe the claim if you look at the images from the acclaimed G1 expert named Pekka Saarinen, whose site has examples mostly shot at ISO 50. Check it out: http://studio-on-the.net/photography/G1/index.html Now if the Sony 3.3mp chip is used in both the G1 and the S75, why wouldn't Sony tap into this low noise arena by sending out a firmware update for the S75 that would extend the ISO range down to 50? Can it be done? Is there merit in this? Seems like a real advantage. BTW, I'm still buying an S75 when they ship. I just love the color accuracy and, yeah, I like having the actual Zeiss name on the lens. I feel I'm getting the best QC effort. Thanks for your comments. -- Tom (AZ)

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Re: S75 Can firmware be set for ISO 50?

I see this from another perspective. What would they do to support ISO 50 with electronic image sensors ? For given shutter speed and aperture, the number of electrons in the CCD cell is independent of ISO setting. So, I guess ISO control is done by adjusting the gain factors in the firmware or ADC circuitary. Now, I'm proposing this experiment. By setting the EV adjust +2 or so, you intentioanlly make the image over exposed. Then take the picture to a image editing software and adjust down the level. Except the saturated areas, the image should be the same as it would be at lower ISO ! By going through this process, you have reduced the relative noise level. And that's why lower ISO images are cleaner.

Posted on Sep 11, 2005

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Re: S75 Can firmware be set for ISO 50?

If Sony didn't anounce it- you won't be getting it.....ever. That's just the way it is with Sony. Buy their camera today and buy their newer camera tomorrow... there just is no middle ground. They don't ever issue firmware upgrades, sorry. This is in stark comparison with Canon which is well known for their product support and upkeep. Imagine, they even sent all their 8200 customers a free batch of their newer inks! FCOL ( that's "for crying out loud" ;^) The S800 will definitely be my next purchase and hats off to Canon for at least "caring" for their patrons.

Posted on Sep 11, 2005

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Camera settings to shoot the moon


The best way is to set your camera to manual exposure and ignore the camera's light meter. The light meter will try to make the entire scene a middle gray, which will result in a gray sky with a blown-out moon.

There's an old rule-of-thumb called the "Sunny-16 Rule." This says that the proper exposure for a picture under a bright sun is f/16 at a shutter speed of 1/ISO seconds. So if you're shooting a daylight scene at ISO 200 then the proper exposure would be f/16 at 1/200 seconds or equivalent (such as f/11 at 1/400).

Why is this relevant? The moon is simply a large rock essentially at the same distance from the sun as any other landscape you've photographed. So start with f/16 at 1/ISO. Take a look at the result on the back of the camera. The sky will be completely black, but so what? It's the moon you want. Zoom in on it and see whether it looks the way you want it to. Adjust the exposure if necessary. Don't let it blow out to complete white.

May 28, 2012 | Cannon EOS 50D Digital Camera

1 Answer

Grainy pictures...iso problem for olympus stylus 820


Without ISO you will not be able to take pictures.
ISO is the old ASA which is related to film speed
ISO 50 is very slow film speed and may result in blur and some grainy appearance , same as if you PUSHED ISO up to 800 in low light.

Try setting it to ISO 100 and see if that helps.

You can still select auto, but its related to either shutter or aperture priority in relation to the set film speed ( now ISO 100)

Sep 09, 2009 | Olympus Stylus 820 Digital Camera

1 Answer

Shutter speed


Did You ever use a SLR back in the stone age when all we had was film?
Film was/is rated with a ISO number, the higher the number the faster the film.
Fast film had fewer and larger grains of silver iodide, (the particles that changed tone, color etc.when exposed to light), therefore it took less light to take a picture.

The down side was a increase in grain. Large grains meant that blow ups, 8x10, 11x14, posters, etc were not as sharp,
as with slow ( low ISO film)
Most outdoor photos had plenty of light so the film had more grains ( high ISO) to capture the available light, and the result was a much sharper image.

Portrait photography used very very slow film ( your 50 ISO setting) but in a studio you had all the artificial lighting you needed, so your portrait came out with very fine detail.

Now the FE-280 does not have a shutter setting, but we can compensate by changing the ISO setting, and the overall effect will be.
Fastest= 1600 ISO for very little light and poorest picture quality.
Slowest=50 ISO for plenty of light and the highest picture quality

200 ISO was the most popular because it worked well outdoors and indoors with a flash, with very good overall picture quality.

400 ISO was a good choice for gloomy days and medium lighting conditions.

Your ISO settings on the FE-280 will have a similar effect.
My best advice is to play around with the different settings until you develop a knack for it, we used to use light meters and a lot of guesswork, quite expensive when you had to buy film and pay for processing.

OK enough history. heres how....
Turn dial to (P) PROGRAMAUTO
Press (MENU)
The camera menu in center is bracketed, Press (OK)
Scroll down one bar on the on screen menu to (ISO)
Press (OK)
Scroll up or down to desired ISO
Press (OK)
TAH DA !

All other functions will be automatic or any other setting that you might choose..
If you change the dial and later go back again to (P) it will retain your selected ISO setting, which is displayed, on screen.

I hope I was help full, and you enjoy some of the special effects that you will now be able try.
By the way... good taste in cameras.
Best regards, Paul

May 18, 2008 | Olympus FE-280 Digital Camera

1 Answer

Grainy Pictures


With the iso set on auto mode it will change depending on the light and anything above iso 200 is very bad on this camera i know have the 717 and it does a lot better but if you can set the iso yourself and take it off auto allways use 100 or 200 for low grain.

Sep 13, 2005 | Sony Cyber-Shot DSC-F707 Digital Camera

1 Answer

Noisy images


Difficult to say without seeing some examples. Could you upload a few to your gallery for us to take a look. One possibility is the ISO is set too high. Go into your cameras settings and look up the ISO reading. Set it to its lowest setting (Probably 50 or 100) and take a few shots and see if that makes any difference. I have a C750 which does suffer with noise at higher ISO settings, but the lower setting should give very good results.

Sep 12, 2005 | Olympus Camedia C-770 Digital Camera

1 Answer

Help w/ Sony DSC-S75


If this is your original battery, I believe that it is time to replace it. I had the same battery in my old S85, then my old 707. It finally wore out, with very similar symptoms. Go on Ebay and find an OEM replacement. Don't buy an aftermarket battery for your S75. Buy cheap, buy twice. That S75 is still a great digicam. Replace the battery and continue to enjoy it.

Sep 11, 2005 | Sony Cyber-Shot DSC-S75 Digital Camera

1 Answer

Long Exposures with S75


No, 8 sec. is the max. goto the S (shutter priority)or M (manual)setting on the camera and use the black wheel with your thumb to set the shutter speed.

Sep 11, 2005 | Sony Cyber-Shot DSC-S75 Digital Camera

1 Answer

DSC-S75 focusing problems...


Without seeing a photo, here are a few possibilities. 1) Shutter speed too low (camera shake). 2) Camera is focusing on something in the foreground. 3) Focus not locked, low light, low contrast scene. Items 2 and 3 can be corrected by manual focus. Set the focus to 1 click below infinity, depth of field will insure everything is in focus. For item 1 remember that the shutter speed must be 1/125 sec or faster at full zoom to avoid camera shake.

Sep 11, 2005 | Sony Cyber-Shot DSC-S75 Digital Camera

1 Answer

Major blurring/sharpness problem with Pentax Optio 50; help!


Thanks for posting the photos.....they tell a lot. You need to return that camera and get a refund. The camera is defective. The first two photos were taken under good lighting conditions and you should have gotten good shots. The last two were taken at low light and the camera was using 1/30th of a second shutter speeds which could account for some blurring due to camera movement. The last one appeared to be a flash shot and it selected 1/30th second. Not a good thing for the camera to do. But all photos have the appearance that you are shooting through a fog. And all photos were shot with an ISO setting of 200. There is something wrong with this camera for that to happen on the first two shots. I checked the EXIF data that is embedded in the photos. That gives you the shutter speed, aperture setting and focal length, ISO settings, and other information. I have not seen a review of the Pentax Optio 50. But the older S50 did not get good reviews. If I were you, I would look for a different brand of camera. For a few dollars more you can get a Nikon 5600.

Aug 30, 2005 | Pentax Optio 50 Digital Camera

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