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Grainy Pictures  
User currently offlineSabena 690 From , joined Dec 1969, posts, RR:
Posted (12 years 7 months 3 weeks 3 days 23 hours ago) and read 1308 times:

Hey guys,

I am still having problems with my digital pictures.

Because they were not accepted on a.net (what is logical), I uploaded one to planepictures, to show you the problem:

http://www.planepictures.net/netshow.cgi?1020249466:BRU

Imagine you that on that day, there was a completely blueu sky!!!

There was not one cloud!!!

And now I have such a grainy sky, I just don't know how to solve it.

Thanks for your help  Smile

By the way, for if it should help you, I use an Olympus C2100UZ.
Settings for this picture: HQ, 1600x1200 (than resized), sharpness on medium.

Regards,
Frederic

23 replies: All unread, jump to last
 
User currently offlineStaffan From , joined Dec 1969, posts, RR:
Reply 1, posted (12 years 7 months 3 weeks 3 days 23 hours ago) and read 1162 times:

Regarding the colour of the sky, that's Brussels... It's blue if you look up, but just over the horizon it gets this funny ugly greyish colour.
What settings do you use when you sharpen and save the image?

Staffan


User currently offlineSabena 690 From , joined Dec 1969, posts, RR:
Reply 2, posted (12 years 7 months 3 weeks 3 days 20 hours ago) and read 1103 times:

Hey Staffan,

I just change the gamma, the clearity and the contrast a bit, and sharpen them a bit than.

About the compression, I can't change that. So if I save a picture, I can't change the compression.

Regards and thx,
Frederic


User currently offlineTurbotrent From Belgium, joined Jan 2002, 152 posts, RR: 2
Reply 3, posted (12 years 7 months 3 weeks 3 days 18 hours ago) and read 1076 times:

Hey Frederic  Smile

when I looked at your picture I instantly thought about my pictures. They had also a grey sky, although it was a beautifull day with no cloud in sight. I have solved it by using a slower shutter speed. I don't know if thats the problem with your pictures, but it did the trick for me. I hope you can solve it.

Greetings,

Tom



Man's flight through life is sustained by the power of his knowledge.
User currently offlineMirage From Portugal, joined May 1999, 3125 posts, RR: 14
Reply 4, posted (12 years 7 months 3 weeks 3 days 17 hours ago) and read 1070 times:

How can you freeze fast moving objects (planes) with slow shutter speeds? or are you panning all of them?

Luis


User currently offlineSabena 690 From , joined Dec 1969, posts, RR:
Reply 5, posted (12 years 7 months 3 weeks 3 days 17 hours ago) and read 1063 times:

Hello guys,

Thx for the comments  Smile

@Turbotrent,
The problem is that, when I lower the shutter speed, I have a big risk that the picture is moved, not sharp.

My camera automatically sets the shutter speed, I will have a look at it next time I go to the airport if I can change it.

Thanks and best regards,
Frederic


User currently offlineJan Mogren From Sweden, joined Dec 2000, 2043 posts, RR: 50
Reply 6, posted (12 years 7 months 3 weeks 3 days 16 hours ago) and read 1061 times:

It has NOTHING to do with the shutterspeed.....
/JM



AeroPresentation - Airline DVD's filmed in High Definition
User currently offlineSabena 690 From , joined Dec 1969, posts, RR:
Reply 7, posted (12 years 7 months 3 weeks 3 days 16 hours ago) and read 1047 times:

Hey Jan,

If you know that it is not the shutter speed, do you know what it is than please?

Regards,
Frederic


User currently offlineWietse From Netherlands, joined Oct 2001, 3809 posts, RR: 55
Reply 8, posted (12 years 7 months 3 weeks 3 days 15 hours ago) and read 1048 times:

It is just the colour of the sky! Haze, Fog, Smog, whatever you want to call it....

Wietse



Wietse de Graaf
User currently offlineStaffan From , joined Dec 1969, posts, RR:
Reply 9, posted (12 years 7 months 3 weeks 3 days 15 hours ago) and read 1045 times:

Frederic, as I said, it's the pollution and haze in the sky that gives it that colour. Next time there is a blue sky and you are near the airport, look just above the horizon (the part that would be in a photo), and you'll see that it isn't blue, rather grey, brown or whatever... If you want blue sky as a backdrop, go when there has been a strong wind or has rained for a few days, that usually clears it up.

Staffan


User currently offlineVez From Canada, joined Nov 2001, 85 posts, RR: 0
Reply 10, posted (12 years 7 months 3 weeks 3 days 14 hours ago) and read 1030 times:

Hi,

As for the color of the sky, as someone already mentionned, it is clear when you look up, but not when you look toward the horizon. We can see a lot of atmospheric perspective ( that is, the humidity, pollution and everything) between you and the background (the buildings). That atmospheric perspective, which is gray in a polluted city, is much more deep in the area just above the horizon, because it extends way further, so it gives a grey sky such as this. You have to shoot on a very very very clear day not to see it in a city.

But for the grain, your problem seem to come, in my point of view, from a contrast too high. You lose all the detail in the dark (for example the fan of the engine) and clear (the white part of the plane's fuselage) parts of the picture. You probably had way more detail in these areas on the original picure, straight out of the camera. If not, the camera itself shoots with too much contrast. You could probably set it to a lower value.

(Sometimes, the light of the day gives too much contrast that the dynamic range of the film (or in this case the ccd) cannot fully render. I don't believe though that we can account for such a high contrast only caused by the type of light you had. Usually, days that give such high contrasts don't have as much atmospheric perspective as you have on your picture.)

When you add more contrast to the entire picture (eith an image editing software), it most of the times results in a granier picture, because you increase the contrast between the "grains" and their surroundings, hence you see them more. So my advice would be to try different contrast values. If you have Photoshop, work with the curves in an adjustment layer, so you can always change the settings.

Mart


User currently offlineBruce From United States of America, joined May 1999, 5066 posts, RR: 15
Reply 11, posted (12 years 7 months 3 weeks 3 days 5 hours ago) and read 994 times:

You know, its not just you guys in Brussels. I am in the united states, NOT in a big city, but in the southeast, and our summer sky is frequently a "milky-white" even though its a nice day. They say that its the pollution from factories up on the Ohio River that follows the air currents for 400-500 miles to the south and east. it tends to be worse in the summer than winter.

It sucks.



Bruce Leibowitz - Jackson, MS (KJAN) - Canon 50D/100-400L IS lens
User currently offlineFUAirliner From Germany, joined Jul 2001, 538 posts, RR: 3
Reply 12, posted (12 years 7 months 3 weeks 3 days 5 hours ago) and read 983 times:

Frederic,

just select the sky and apply some blur. If you sharpen areas which tend to look grainy (skys, dark parts) you will increase the grain and make your shot look worse. I select the sky, apply some blur, then invert the selection and sharpen the other parts. I have never had problems with that method.


Jan,

I love your short, precise comments.  Smokin cool  Big thumbs up


Frank



Frank Unterspann - Hamburg, Germany
User currently offlineJan Mogren From Sweden, joined Dec 2000, 2043 posts, RR: 50
Reply 13, posted (12 years 7 months 3 weeks 3 days 2 hours ago) and read 963 times:

Thanks!  Wink/being sarcastic


/JM



AeroPresentation - Airline DVD's filmed in High Definition
User currently offlineCraigy From United Kingdom, joined Jun 2001, 1118 posts, RR: 0
Reply 14, posted (12 years 7 months 3 weeks 3 days 1 hour ago) and read 951 times:

Does your camera have an ISO setting and if so, what are you using?
Craig.


User currently offlineSabena 690 From , joined Dec 1969, posts, RR:
Reply 15, posted (12 years 7 months 3 weeks 2 days 21 hours ago) and read 935 times:

Hello guys,

Thanks for all the interesting replies  Smile/happy/getting dizzy

It seems to be the pollution, I thought it had sth to do with the camera ...

@Craigy:
My camera automatically changes all these things, so I don't know which ISO setting he used...

Thanks and best regards,
Frederic


User currently offlineEGGD From United Kingdom, joined Feb 2001, 12443 posts, RR: 35
Reply 16, posted (12 years 7 months 3 weeks 2 days 20 hours ago) and read 935 times:

Frederic - I believe it is the user that changes the ISO settings, not the camera (auto or P mode doesn't change the ISO, at least not on the pro90).

User currently offlineLGW From , joined Dec 1969, posts, RR:
Reply 17, posted (12 years 7 months 3 weeks 2 days 20 hours ago) and read 930 times:

On the 2100 you can choose AUTO or 100 or 200 or 400 ISO's. If you use auto it will automatically choose which one it thinks is best. If you want a certain one, just choose it!

LGW


User currently offlinePUnmuth@VIE From Austria, joined Aug 2000, 4163 posts, RR: 54
Reply 18, posted (12 years 7 months 3 weeks 2 days 20 hours ago) and read 932 times:

I know some digicams which adjust the ISO automatically when its too dark.
Peter



-
User currently offlineSabena 690 From , joined Dec 1969, posts, RR:
Reply 19, posted (12 years 7 months 3 weeks 1 day 17 hours ago) and read 903 times:

Hello guys,

Thanks for all the help and the replies.

Here are some other rejections, again for problems I understand, but I can't solve them.
It is sad to see all your pictures rejected, and if you can't do something on them.

Here are some links:

These are badcompressed:
http://airliners.net/procphotos/rejphoto.main?filename=SQB744c.jpg
http://airliners.net/procphotos/rejphoto.main?filename=SQB744b.jpg

This one is low quality:
http://airliners.net/procphotos/rejphoto.main?filename=BRM11Fa.jpg

I understand the rejection reason for 100%, but I want to solve it.

Who can give me some tips??

Thanks in advantance!!!

@Turbotrent:
Did you receive my mail now? I hope that the problems are solved...

@Peter Unmuth:
Check your mailbox please.

Best regards,
Frederic


User currently offlineLewis From Greece, joined Jul 1999, 3677 posts, RR: 5
Reply 20, posted (12 years 7 months 3 weeks 1 day 1 hour ago) and read 881 times:

Maybe you should use Unsharp Mask and not sharpen...

User currently offlineAirhead711 From United States of America, joined Mar 2002, 249 posts, RR: 2
Reply 21, posted (12 years 7 months 3 weeks 13 hours ago) and read 860 times:

Hello,
I am also using the C-2100 from olympus.I'm still a beginner but I do seem to be having some luck with it.I use it on P mode,SHQ and ISO set to auto.If you change the default settings,make sure you turn off the auto reset or they will go back to default as soon as you turn off the camera.As far as enhancing,I use Photomax Pro.I just resample them to size 1040 X xxx.Then go to sharpen tool and click sharpen lightly.Thats all I do.Go to search and look for "Scott Hoggard".All my photos except the F-101 were taken with the C-2100.

Good Luck!
Scott


User currently offlineFUAirliner From Germany, joined Jul 2001, 538 posts, RR: 3
Reply 22, posted (12 years 7 months 3 weeks 4 hours ago) and read 838 times:

Frederic,

to avoid a "bad compression" rejection you should save your shots as a .jpg with the highest possible quality. You should get a filesize of about 500-600 Kb.

Your "low quality" rejection is also caused by too much compression, but the slide/negative itself might be a little unsharp. Look at the orange parts of the tail and winglets. I would also crop it a little tighter.


Frank



Frank Unterspann - Hamburg, Germany
User currently offlineSabena 690 From , joined Dec 1969, posts, RR:
Reply 23, posted (12 years 7 months 3 weeks 4 hours ago) and read 833 times:

Thanks for helping guys!!!  Smile/happy/getting dizzy

@Airhead711,
You have great pictures!!

@FUAirliner,
I can't change the compression and the quality with the software I have now.

And I can't crop the picture with the software I have now.

I thought that that software was good enough, but apparently not  Sad

I use the software of Olympus.
Does anyone else use this software?

Regards and thanks,
Frederic


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