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General photography questions and answers: Discuss flash noise ?...this going to sound a dumb question. ... last week i took some shots at a wedding time 1600 so ...
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Old 26-12-2011, 17:32   #1 (permalink)
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flash noise ?

this going to sound a dumb question. ... last week i took some shots at a wedding time 1600 so it was dark even in the church ..ok the flash was used for canon users i set my camera on the p mode using.. ttl as well. most of my setting were at 200 iso and at f4 the lowsest i could manage . now this is the question why did nearly all of my shots come out with a lot of noise ..like i had it set at 800 or more.
After the event i tried i analyse what the problem was, even tried the same setting in the house with no noise apparent... can't figure it out ,
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Old 27-12-2011, 06:46   #2 (permalink)
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Re: flash noise ?

i have never used P as its an automatic mode, and i think this may have been your problem.

was the iso setting altered by using P even tho u had it at 200 maybe?

you wont replicate it unless it is at the same level of light in the same size of venue etc cos the camera will adjust accoringly using an automatic mode

I always with no exception use manual for weddings as the lighting can change and the exposure be so diverse that I am not willing to rely on the camera getting it right
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Old 27-12-2011, 08:08   #3 (permalink)
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Re: flash noise ?

thanks fiona i hardly ever use flash but was advised to use the p mode if i wasn't confidant with the manual setting ,the iso didn't change but i did use FEC + and - and used 1/60 on all my shots..
but what i don't understand is how at 200 i can get noise to a level that is noticeable.
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Old 27-12-2011, 13:47   #4 (permalink)
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Re: flash noise ?

Think it has a lot to do with contrast and amount of shadow in the shot.You can see noise at the lowest iso or at least I can in certain situations.

Fiona , do you use your own settings and ignore the camera then ?
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Old 27-12-2011, 13:53   #5 (permalink)
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Re: flash noise ?

Are you sure it is noise? We often get people with P&S cameras saying they are getting snow and/or orbs in their flash shots and it is airborne dust reflecting the flash light due to the position of the flash in relation to the lens. A similar issue to red-eye.
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Old 27-12-2011, 14:03   #6 (permalink)
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Re: flash noise ?

Might be of interest Reducing Noise in Photoshop -- Part I
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Old 27-12-2011, 15:06   #7 (permalink)
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Re: flash noise ?

ok this is a 100% cropped all the way in to see the noise .ok a lot out of focus but you can clearly see the noise
[url=http://www.pixalo.com/gallery/showphoto.php/photo/48404][/url

this one with some noise reduction in lightroom

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Old 27-12-2011, 15:27   #8 (permalink)
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Re: flash noise ?

Being a Nikon user, I was going to ask the equally maybe dumb question if you had checked your EXIF data to check what the camera had actually set. This shot shows ISO800. Is this the clue you're looking for?
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Old 27-12-2011, 16:01   #9 (permalink)
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Re: flash noise ?

what a complete numbtie i am i didn't check the exif data.. i now have.. most of my other shots are set at 200 iso but i have about 30, set at 800 iso how that happened i don't know but saying that the shots at 200 are still noisy though. i can see the problem at 800 but really at 200 i really shouldn't have a problem.. i took some on Christmas day, flash, P mode, iso 200 they came out as expected.... thanks.. grease spot
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Old 27-12-2011, 16:11   #10 (permalink)
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Re: flash noise ?

Just one other thought. Is auto ISO enabled on your camera?
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Old 27-12-2011, 16:31   #11 (permalink)
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Re: flash noise ?

No dabs i disabled that option but i wonder when i used FEC i somehow changed the the iso setting instead ..thinking on though.. FEC works on bars if you know what i mean.. when iso function is changed you can see the numbers .. I think i will put this down to not taking enough care.................................
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Old 28-12-2011, 07:18   #12 (permalink)
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Re: flash noise ?

Quote:
Originally Posted by Neon View Post
Think it has a lot to do with contrast and amount of shadow in the shot.You can see noise at the lowest iso or at least I can in certain situations.

Fiona , do you use your own settings and ignore the camera then ?
yep i do.

i will start off with a couple test shots in the venue and alter the settings accordingly.
i also think( and this is just me and not a dig at anyone) that if you are not confident enough to use manual then you are not ready for doing weddings. Especially if you are the main shooter. lots of venues have really iffy lighting situations which could easily fool the camera, add in a black suit and a white dress......- although have to say I have never shot a suit yet its always kilts. but you get what i mean with the exposures.

they are paying good money and it doesnt matter how much to have someone do the job properly if you shoot in auto they could just as easily get one of their guests to capture the moments.
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Old 28-12-2011, 08:47   #13 (permalink)
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Re: flash noise ?

have to agree fiona this is why i don't do weddings, on this occasion i was asked to do it but refused politely, this one was just for me..Phew! i am glad...............
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Old 03-01-2012, 08:04   #14 (permalink)
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Re: flash noise ?

You would be amazed at what free noise reduction software can do with images at high iso setting. Dont know if you remember the shots of Candy Dulfer I took in Aruba, they were shot between around 600 and 1600 iso settings and run through free noiseware community edition. Around 30 or so have been accepted by Alamy.
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Old 03-01-2012, 09:47   #15 (permalink)
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Re: flash noise ?

I also rarely use a flash gun and my flash gun is 30 years old. As it is not a dedicated flash, I am forced to use it either in manual or auto-quench mode and, in any case, have to set the camera manually. Recently, I was forced to use the flash a few times (as fill in) and was quite surprised how well the flash gun performed. I did have the advantage that an experienced flash photographer was at the same shoot and offered some good advice. I would certainly recommend learning to use your flash gun with camera manually as it puts the photographer in full control.
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