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This Is The Difference Between 200-400-800 ISO  
User currently offlineBA777 From United Kingdom, joined Jun 2001, 2179 posts, RR: 7
Posted (12 years 3 months 2 weeks 21 hours ago) and read 6041 times:

Guys,

Shot with a Fuji FinePix 4700Zoom, taken with the camera fixed on a tripod, camera in the same posistion each time, and shooting the same picture, but with different ISO selections.

First off is 200:



Next 400



And next 800 (why did I bother  Wink/being sarcastic)



As you can see, 200 is the clearest, then 400 then 800, 800 seems extremely grainy,which is why I never use it when shooting, always 200 and in the worst cases 400.

I haven't seen a post like this in these forums before, so I thought it might be valuable information for new photographers here on A.net and maybe some more experienced shooters.

Before Mr Sheldon, Mr Watt etc. have a go @ me as they would probably see this post "inappropriate"  Wink/being sarcastic I'd like the beginners to see what I mean.

BTW, these are DIGITAL shots, so film shots may not be the same!!

Regards.

BA777  Big thumbs up

9 replies: All unread, jump to last
 
User currently offlineCkw From UK - England, joined Aug 2010, 745 posts, RR: 16
Reply 1, posted (12 years 3 months 2 weeks 19 hours ago) and read 5990 times:

OK, an interesting comparison, but a few points people should note

1 - what you see is not grain, but noise - it looks similar but is quite different. In general though both get more noticeable as ISO increases.

2 - Although in general higher ISO means lesser quality, there is no direct correlation across cameras or films. For instance, Fuji Provia 400 has significantly less visible grain than Fuji Sensia 200. Different digital camera sensors also have different characteristics.

With digital images the "quality" of the noise is important - ideally it should be very random. Noise becomes much more noticable at low ISOs if it forms a regular pattern.

Cheers,

Colin



Colin K. Work, Pixstel
User currently offlineAirhead711 From United States of America, joined Mar 2002, 249 posts, RR: 2
Reply 2, posted (12 years 3 months 2 weeks 18 hours ago) and read 5965 times:

Thanks for the info.Very informative post and exactly the type of info I come to these boards to find.1 quick question though.What type of situation would require the ISO to be set to 400 or 800?I thought that low light situations required a higher ISO.But a couple of months ago at an airshow I took a photo of a B-1 Bomber doing a low pass with full burners at night.I had the ISO set to 400 and the photo was extremely grainy(or noisy...it's digital)But I am just a beginner so it's trial and error for me.So,can you explain a little about the situations that would require a higher ISO?

Thanks
Scott


User currently offlinePPGMD From United States of America, joined Sep 2001, 2453 posts, RR: 0
Reply 3, posted (12 years 3 months 2 weeks 18 hours ago) and read 5966 times:

Well I have used 400 and 800 myself on my CP995. I was sort of forced to, it was dark and there was alot of movement. The 400s weren't bad, but the 800s were horrible, but still came out pretty good IMO.

Though on my cameras when shooting the 200 f2.8, with Press 400 or Press 800 the grain isn't that bad IMO, and the shutter speeds are at exactly what I am looking for.



At worst, you screw up and die.
User currently offlineCkw From UK - England, joined Aug 2010, 745 posts, RR: 16
Reply 4, posted (12 years 3 months 2 weeks 9 hours ago) and read 5931 times:

Regardless of the ISO, grain or noise will be made worse by underexposure, so it is important to select an appropriate ISO for the conditions. I think, for example, instead of working at the margins of ISO 100 and risking a half stop underexposure, you would get better results with a correctly exposed shot at ISO 200.

Also, going back to my earlier comment, not all digital cameras are alike, and will have different noise characteristics depending on the sensor. Only experimentation and experience will tell you what's best for your camera - but since you're digital, at least you can experiment to your heart's content at no cost!

Cheers,

Colin



Colin K. Work, Pixstel
User currently offlineBartiniMan From Australia, joined Jul 2001, 315 posts, RR: 0
Reply 5, posted (12 years 3 months 1 week 3 days 8 hours ago) and read 5840 times:

Quick question, what does ISO stand for?

BartiniMan


User currently offlineStaffan From , joined Dec 1969, posts, RR:
Reply 6, posted (12 years 3 months 1 week 3 days 8 hours ago) and read 5846 times:

International Standard Organisation, or something like that.

Staffan


User currently offlineG-CIVP From United Kingdom, joined Mar 2001, 1331 posts, RR: 10
Reply 7, posted (12 years 3 months 1 week 2 days 22 hours ago) and read 5819 times:

"Fuji Provia 400 has significantly less visible grain than Fuji Sensia 200."

Mmm. Didn't know that - saw a photographer using that at LHR on a sunny day and thought he was mad! Are there any other (common) film anomalies?


User currently offlineCraigy From United Kingdom, joined Jun 2001, 1118 posts, RR: 0
Reply 8, posted (12 years 3 months 1 week 2 days 20 hours ago) and read 5808 times:

G-CIVP,
I don't think Provia is an 'anomaly'. It is branded as professional slide film, and costs about twice the price of Sensia. I use Provia 100 and when scanned at 4000 dpi, I cannot see any grain at all. I have just used my first Provia 400 and I am waiting to see the results. It is a luxury shooting 400 ISO, being able to use such small apertures and fast shutters even at 500mm.
Regards,
Craig.


User currently offlineG-CIVP From United Kingdom, joined Mar 2001, 1331 posts, RR: 10
Reply 9, posted (12 years 3 months 6 days 22 hours ago) and read 5758 times:

Thanks Craigy - the fog has lifted!

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