LMC at ISO1600 in camera noise reduction

[avandonk]

Tried out the in camera noise reduction of the 20D
4X330 sec ISO 1600,Hutech Nebula filter, stacked JPGs! in Registar, adjusted in Photoshop.

Image Gone

Too tired to say more.

Here are two more images essentially from the same data

300mm F2.8,5x330sec ISO 1600,Hutech Nebula Filter,in camera noise reduction ON.

LMC_RAW.jpg

RAW to Tiff ,applied Noiseware Professional to Tiffs,stacked in Registar
Adjusted in Photoshop.again applied Noiseware Professional to the result
http://users.bigpond.net.au/avandonk/LMC_RAW.jpg

LMC_JPG.jpg

Used out of camera JPG's,applied Noiseware Professional to JPG's,stacked in Registar,Adjusted in Photoshop.again applied Noiseware Professional to the result
http://users.bigpond.net.au/avandonk/LMC_JPG.jpg

I think the Raw frames give a better image of weak nebulosity than the JPG frames. I tried to keep all image manipulation the same for RAW and JPG.

The only drawback of this method is that it takes twice as long to collect a frame, as the camera takes a dark frame for each exposure and subtracts it in camera.But it saves noise subtraction in Photoshop.The camera does a far better job of removing noise than photoshop.There are far less artefacts ie 'dark holes',in fact almost not noticeable.


Bert

[Striker]

Very nice Bert.....I havn't really gone into noise reduction as yet....looks good though.

I think it's time for you to sell that cheap 300mm F2.8 lense...you should move on to something better Bert...lol

[rumples riot]

Good stuff Bert. Wide fields have a nice quality about them.

[ving]

I love widefields! gret shots with plenty of detail there! :)

[atalas]

Nice work Bert !

[tornado33]

The noise reduction is indeed working well there.
Scott

[xrekcor]

Excellent shot Bert!

[avandonk]

I was actually quite shocked how well the in camera noise reduction worked.I was working under the assumption that a fast modern PC and the latest noise reduction software would be superior to the in camera processor.The only thing I can think of there must be a hardware advantage to the camera.
Here are five pictures 100% crop no compression jpgs of exactly the same area (or as near as humanly possible)
of the sensor.
all exposures 330sec ISO 800 last night ie warm
1 Incamera noise reduction
2 Dark frame
3 Image with dark frame subtracted in Photoshop slider at 50%
4 Image with dark frame subtracted in Photoshop slider at 100%
5 Original image with noise

Any insights and comments welcome.

Bert

[sheeny]

Very impressive, Bert!