Botanic Specimens

Ronman

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I brought these flowers in last Summer, placed them in front of a black background and lit them with a desk lamp. What do you think about these?






1 ?
P7031167Resz.jpg







2 Common Fleabane
WeedsDaisy015SMHRBGCResz2.jpg









3 Bluette
Bluette021CResz.jpg
 
way too noisy. They're pretty good, but I'd like to see less noise.
 
Thanks, I'm trying to figure out where I'm introducing the noise.

Hell, I'm just figuring out what noise is. Thanks again. Ron
 
Noise is that graininess where there should be smoother gradients. I'm just a noob, but I'm guessing a larger aperture will let more light hit the sensor and reduce the effect (assuming digital). The ISO could be too high as well, or maybe a desk lamp is too warm - a combination of problems?

This should get the pros chiming in!

-Shea :mrgreen:
 
I'd say the most common means of introducing noise to an image, if using digital, would be too high of an ISO. At least that's where I've run into noise. In fact, that's the only time I run into noise, is when shooting at anything above ISO 1250 or so, but that's usually minimal. I run into a lot of noise at ISOs 3200 and 6400. The level of noise when using a digital camera can depend on what body you're using.
 
Maybe it's this old camera I'm using, it's an Olympus 7000C. It has a 1x1.8 CCD sensor, 7.1mp.

I use Paint Shop Pro 8 for processing. My full size images do not look as bad as the ones from photobucket. The petals on #2 are much better on the larger files, the shaded and less exposed areas are not much different.
Am I doing something wrong when they are compressed. I can print 8.5x11s that are real nice.
 
Maybe it's this old camera I'm using, it's an Olympus 7000C. It has a 1x1.8 CCD sensor, 7.1mp.

I use Paint Shop Pro 8 for processing. My full size images do not look as bad as the ones from photobucket. The petals on #2 are much better on the larger files, the shaded and less exposed areas are not much different.
Am I doing something wrong when they are compressed. I can print 8.5x11s that are real nice.

My fastest ISO is only 400, I'm usually at 100.
 
Your printer inks may be sublimating and actually smoothing out the noise. Post a 100% sample crop if you want the noise evaluated at full resolution.

-Shea
 
Something like this?
Are you seeing the noise now? It is pretty bad. Compare it to some of the other post here. Hopefully you can produce better results with some different settings. Someone with that camera may even be able to help you out. ;)

-Shea
 
I think I'm going to move ahead with my plan to purchase a DSLR. I think I had decided that this was the limitation of the camera. I didn't know they should be so much better. New camera should solve this problem.

Thank you all, Ron
 
Noise can be a problem with old cameras (and even modern ones) - I use NeatImage. Your crop is a bit too damaged to correct it properly, but this is the sort of result you will get (although it would be better on a full image) - really well worth buying.
WeedsDaisy015SMHRBGC2.jpg


You can profile your camera and then run it as a matter of course. I've got a page on it on my web site.

Also doing a lot of post-processing can introduce noise - especially colour saturation and sharpening, so beware and inspect your images at 100%.
 

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