Question on ISO

**ranmasatome** · 9th Dec 2005, 19:38

err... we looking thru some insect photos and realised that some of them looked quite grainy when i took them... would it be due to the ISO?? would using a higher ISO result in a grainy picture?? if that is the case wouldn't you always wanna shoot with low ISO and lots of flash instead? just wondering..

**Justikanz** · 9th Dec 2005, 20:40

The higher the ISO, the more grainy the pic... What ISO did you shoot in? 1600?

**Simon** · 9th Dec 2005, 21:22

yes, its due a higher ISO setting or maybe the pix is underexposured, so when you increase the exposure, it will be grainy.

sometimes, it depends greatly on the situation, like overcasting, undergrowth.. these factors will require the photographer to increase the ISO, using flash in this kind of situation will resulted in harsh shadows

**hwchoy** · 9th Dec 2005, 21:29

Originally Posted by ranmasatome

err... we looking thru some insect photos and realised that some of them looked quite grainy when i took them... would it be due to the ISO?? would using a higher ISO result in a grainy picture?? if that is the case wouldn't you always wanna shoot with low ISO and lots of flash instead? just wondering..

of course, but not everyone walks around with monster flashes like benny

**mervin** · 9th Dec 2005, 21:59

Originally Posted by hwchoy

of course, but not everyone walks around with monster flashes like benny

hahahaha !!!!

and not everyone walks around with a monster flash attached to a small G5 too !

**ranmasatome** · 10th Dec 2005, 04:10

Originally Posted by Simon

yes, its due a higher ISO setting or maybe the pix is underexposured, so when you increase the exposure, it will be grainy.

sometimes, it depends greatly on the situation, like overcasting, undergrowth.. these factors will require the photographer to increase the ISO, using flash in this kind of situation will resulted in harsh shadows

Was shooting under canopy then and didnt have flash handy,...guess the ISO messed the pic up...actually rather have slightly grainy pic then those harsh shadows..damn unnatural.. in taht case how to have less grainy pics and no harsh shadows?

**Simon** · 10th Dec 2005, 07:56

sometimes very difficult to prevent harsh lighting and shadow, but u can greatly reduce it using a bounce card or post processing

**XnSdVd** · 10th Dec 2005, 11:07

Get neatimage.
http://www.neatimage.com/
Amazing little programme and it's FREE!

**hwchoy** · 10th Dec 2005, 11:43

no, get more flashes and wireless transmitters

**XnSdVd** · 10th Dec 2005, 12:54

Haha, and for those jobless/poor/young/saving for house/saving for 12ft tank guys like me, get neat image

Not all of us drive around in merces right Choy?

**hwchoy** · 10th Dec 2005, 14:25

Originally Posted by XnSdVd

Haha, and for those jobless/poor/young/saving for house/saving for 12ft tank guys like me, get neat image

Not all of us drive around in merces right Choy?

Benny will not agree with you haha. He has 10 of those flashes you know.

**XnSdVd** · 10th Dec 2005, 14:56

10?

Still, I need to worry about getting a new lens before I can worry about getting a flash

**juggler** · 11th Dec 2005, 00:58

Originally Posted by XnSdVd

10? why? Is the agricultural sector doing that well?

Still, I need to worry about getting a new lens before I can worry about getting a flash

Control over lighting is as important as a good lens. Should invest in one.
More so if we are taking pics of our fish. The tank lighting is usually insufficient and we need the flash to "freeze" the fish.

**Justikanz** · 11th Dec 2005, 01:02

Originally Posted by juggler

Control over lighting is as important as a good lens. Should invest in one.
More so if we are taking pics of our fish. The tank lighting is usually insufficient and we need the flash to "freeze" the fish.

Agree. I noticed the difference straight away when I was shooting with flash, man!

But XnSdVd needs new lens cos his kit lens spoilt liao...

**valice** · 11th Dec 2005, 02:00

Originally Posted by Justikanz

Agree. I noticed the difference straight away when I was shooting with flash, man!

How do you use the flash and not have the reflection shown on your picture? By using your macro lens, you won't have that problem?

ps: I'm assuming you are not using a wireless flash like Benny's...

**Justikanz** · 11th Dec 2005, 02:13

I was trying with Green Baron's flash. He has a white plastic cap (Can't catch the name for that thing...). It acts to diffuse the light... See this:

This is with flash and taken head on, but with that cap on, you can't see the flash on the glass.

Ok, getting back to topic... With flash, one would probably get by with a lower ISO...

**hwchoy** · 11th Dec 2005, 02:39

please, it is call an omnibounce. people here will get confuse and really put a cap on their flash

btw when shooting with flash, use lowest ISO.

**Justikanz** · 11th Dec 2005, 19:40

I did mention I didn't catch the name, right?...

Then the next best description would be a 'white plastic cap' lor...

**valice** · 11th Dec 2005, 21:38

Originally Posted by hwchoy

btw when shooting with flash, use lowest ISO.

So if use ISO 100, it would not register the flash even when we don't have an omnibounce to diffuse the flash?

**Justikanz** · 11th Dec 2005, 21:59

Can we use ISO 200 or 400 when shooting with flash?

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