RAW versus JPG...

[Topmedic]

Originally Posted by logic 7

I think you should do a photo book. I love almost everything you post on here and in Photos that will blow you away

Thanks. I really appreciate that.

[Silvrr]

hate to bring this thread back from the dead but I thought this was pretty intresting. Note the resolution differnce in RAW and JPEG on the 7D. The results were similar on the T1i (sensor for 50D) also.



I always thought that there was no difference in RAW and JPEG on this front. The RAW was converted to JPEG also so its apples to apples at the time of comparison.

[Rasidel Slika]

im so glad to see that. now i know, that im not crazy.

[katodog]

I don't get it, it's a chart that shows RAW resolution? And it's showing the difference between RAW and JPG on the 7D? I'm confused as to how that makes or breaks an argument for RAW-v-JPG, and...

hate to bring this thread back from the dead

...we all hate for you to bring this thread back from the dead too.

[JLew24asu]

[Silvrr]

Originally Posted by katodog

I don't get it, it's a chart that shows RAW resolution? And it's showing the difference between RAW and JPG on the 7D? I'm confused as to how that makes or breaks an argument for RAW-v-JPG, and...

Take a picture in RAW and JPEG setting in the camera (same picture exact same everything). Convert the raw and compare the JPEGs and the JPEG converted from RAW has a higher resolving power.


Im not saying it makes or breaks the argument I said its intresting. Its a factor of RAW vs. JPEG shooting I was unaware of.

[Rasidel Slika]

Originally Posted by katodog

I don't get it

QFT

Photozone Lens Test FAQ

Q: What is the meaning of LW/PH (MTF50) ?

A: LW/PH means "Line widths per picture height" - it's basically a unit for resolution (not sharpness which is a combination of contrast and resolution) limited by the max. resolution of the camera's image sensor. You shouldn't take the LW/PH value itself too seriously because it is dependent on a number of factors. The analyzing tool (Imatest) is quite vulnerable to the quality of the source material. All PZ sample images are taken as RAW files and converted via Photoshop ACR (default settings without automatic image correction and contrast set to 0). If you convert RAWs via other imaging applications the LW/PH figures will be lower or higher due to the different sharpening & contrast algorithms. In the future I will probably drop the LW/PHs in favor of a school mark system which is easier to read. Refer to the reference scale on the left of the MTF charts to classify the quality. Here`s a little visual reference:

[katodog]

Originally Posted by Silvrr

Take a picture in RAW and JPEG setting in the camera (same picture exact same everything). Convert the raw and compare the JPEGs and the JPEG converted from RAW has a higher resolving power.


Im not saying it makes or breaks the argument I said its intresting. Its a factor of RAW vs. JPEG shooting I was unaware of.

I still don't understand, and yes Ras, I am an idiot, you don't have to point it out to anyone. Everyone already knows.



RAW has a higher resolution straight out of camera, when you convert it to JPG you can set whatever resolution you want. To make a true comparison you need to convert the RAW at the same resolution as the resolution set for a JPG in-camera. 40D JPG resolution is 72dpi, so to make a true comparison you need to convert the RAW at 72dpi.


Don't you think so??

[Rasidel Slika]

actually it looks like this specifically applies to the 7D. and, I suspected this, the first time I shot JPG on it. that's all I'm saying.

the jabs are just for fun. and you know that.

[katodog]

I know, don't be silly.


I actually can see the tiniest bit of difference, but to be honest it would be seriously negligible to the "final product" because of processing and whatnot. I highly doubt that a RAW set to the same resolution as a JPG would show much improvement after conversion. You are losing some detail in conversion no matter if the camera does it or the computer does it.

[Rasidel Slika]

but i like being silly....