View Full Version : Why are all my pics so grainy?


rb5 286
31 July 2006, 13:11
http://s18.photobucket.com/albums/b109/rb5286/British%20Motorshow%202006/

http://s18.photobucket.com/albums/b109/rb5286/Hales/

http://www.rb5.paulhooker.co.uk/rb5oc/movie/img0012/flow1.jpg
http://www.rb5.paulhooker.co.uk/rb5oc/movie/img0012/flow2.jpg
http://www.rb5.paulhooker.co.uk/rb5oc/movie/img0012/flow3.jpg
http://www.rb5.paulhooker.co.uk/rb5oc/movie/img0012/flow4.jpg
http://www.rb5.paulhooker.co.uk/rb5oc/movie/img0012/flow5.jpg


S7000 Fuji camera used with wide angle lense

Milamber
31 July 2006, 13:26
Cos you've fiddled with the settings and put it on ISO 800. Put it back to ISO 100 and you'll be fine mate

ChefDude
31 July 2006, 13:27
Did you check the ISO setting?

If it's on auto, set it to 200 and use the flash to fill in.

Simon C
31 July 2006, 14:19
Milamber has got it right. Its used Iso 800. the noise was 1 reason my 7000 went back to fuji and I now use Nikon.

Milamber
31 July 2006, 14:48
:luxhello: Woohoo I got a photography question right :luxhello:

rb5 286
31 July 2006, 15:05
thanks guys - without sounding tooo thick

Why is ISO 800 setting making it grainy and ISO 100 / 200 wouldnt?

Milamber
31 July 2006, 15:17
Although you have a digital camera (no film) the iso rating is still relevant.

Think of it as sensitivity to light. ISO 100 is less sensitive and ISO 1600 is very sensitive. Therefore in very dark conditions you would use a higher iso rating to keep the shutter speed reasonable and avoid camera shake.

In the dark the shutter has to stay open longer to let more light in, the higher the iso the less time the shutter stays open.

The downside to this ability is the amount of "noise" that you get (the graining you are complaining about).

Chris

Milamber
31 July 2006, 15:17
Simon will be able to correct me where I have gone wrong, he works in the dark most of the time and must be an expert at Iso's

Simon C
31 July 2006, 17:37
Although you have a digital camera (no film) the iso rating is still relevant.

Think of it as sensitivity to light. ISO 100 is less sensitive and ISO 1600 is very sensitive. Therefore in very dark conditions you would use a higher iso rating to keep the shutter speed reasonable and avoid camera shake.

In the dark the shutter has to stay open longer to let more light in, the higher the iso the less time the shutter stays open.

The downside to this ability is the amount of "noise" that you get (the graining you are complaining about).

Chris

Give yourself another gold star and a pint!!!! :D

Your right!!!

Simon C
31 July 2006, 17:38
Simon will be able to correct me where I have gone wrong, he works in the dark most of the time and must be an expert at Iso's

Nope, just the top 3!!! For 3 months my D200 never saw less that ISO1000!!!!

baz69birds
31 July 2006, 18:04
I had to just check mine ;)
& mine is on 100, i take it that is FINE???
or should i change it.
& my Quality is on RAW!! is that norm?

my recent collection of pictures
http://www.subarryu.co.uk/Car-Images/index.cgi?mode=album&startitem=1&album=/J.A.E.%20%2706
Baz

Simon C
31 July 2006, 18:36
Baz, ISo just relates to light sensitivity. The lower the number the less sensitive it is, but the less "noise" is observed.

If you cycle the quality round you go from Raw to fine, etc.

Milamber
31 July 2006, 18:58
Give yourself another gold star and a pint!!!! :D

Your right!!!

Next step world domination!!!

I ended up buying my 300D and never thought I would understand any of the dials or settings but have slowly got the hang of it, just need to get composition right now :lol1:

Simon C
31 July 2006, 19:01
Next step world domination!!!

just need to get composition right now :lol1:

You and me both mate!!! and for me its being the hardest bit to learn / master.

mneame
31 July 2006, 23:09
also something to do with the size of the picture. reduce the size and they'll look better. the higher the iso, the more grainy they'll look when you blow them up.

rb5 286
01 August 2006, 10:17
thanks guys, understand now - more tinkering :D :D

one day i will get an SLR but need more practise to justify it!!!!

i'm thinking of getting some macro lenses for the S7000

mneame
01 August 2006, 11:16
they'll make a big difference. try to avoid using digital zoom. i feel it tends to make the pixels larger rather than magnifying what it's really seeing.

Milamber
01 August 2006, 11:50
I agree, NEVER use digital zoom it's pointless.

rb5 286
02 August 2006, 18:03
I dont for that reason but used the Macro setting on the S7000 and manual focus, a lot of pics got ditched on the insect shots :(s


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