Wednesday, December 21, 2016

One Important Difference Between Shooting RAW + JPEG and Just RAW in Fuji X-Series Cameras

Full image street scene, 6000 X 4000 pixels as you would see on your camera's LCD (click to enlarge)
X-T2, 56mm f/1.2 lens; 1/400th sec. @ f/5.6
I have mentioned in this blog before that there are very good reasons for setting your Fuji X-T2 and/or X-Pro 2 cameras for RAW + JPEG instead of just RAW or just JPEG.  I want to illustrate one of those benefits here so you can see the advantage.

Advantages-100% LCD viewing, JPEG film simulations, utilize either the RAW or JPEG options

Disadvantages--uses more storage space on memory card and hard drive, takes longer to ingest into your editing software, uses up camera's buffer more quickly when utilizing high fps

There is a huge advantage, image quality-wise to utilize RAW files for editing and your final purposes, but there are times when JPEGs may serve your purpose just fine.  RAW files are 14-bit while JPEGs are 8-bit, which means it is a much higher quality file and that there is much more information in the RAW file for editing purposes.

The big disadvantage for me in using only RAW is not having the ability to maximize the image's magnification on my LCD to check for critical focus as well as other aspects of image quality.  See my examples below.


If you set your Fuji camera for RAW only, this is approximately the maximum magnification you get
when looking at your image on the LCD; 2360 X 1574 pixels or about 39% of the entire image.
If you set your Fujifilm X-T2 to shoot RAW + JPEG, this is approximately the maximum magnification
you can get on your LCD; 766 X 511 pixels or about 13% of the entire image..
I have no idea why Fuji has designed their cameras to act like this.  No other digital camera I have owned has this requirement.  I think they are embedding a small JPEG instead of a large JPEG in the RAW file, but why, I don't know.

If you don't want to use the JPEGs after making your images, you can set Lightroom to only import the RAW and ignore the JPEGs.  That takes care of the ingest speed loss and the extra space needed on your hard drive without giving up your ability to see greater enlargement on your LCD.

So you can see if you want to critically check focus on an X-T2 (or X-Pro 2), it may be wise to utilize the RAW + JPEG feature as that allows you to zoom in on your LCD to a much greater extent.

Thanks for looking. Enjoy! 

Dennis A. Mook 

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3 comments:

  1. Dennis,
    Thanks for sharing. As RAW-shooter I will give it a try. The green tree on the right and the tree branches in the above-right corner show the worm-like image rendering. Is it the internet, or is it real. A year ago you wondered how the new 24mp sensor would cope with the watercolor/wormlike repaeting-fine-details problems. I am considering buying the new X Pro2, but scared. What is your experience(with lightroom). Ton van Schaik

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    1. Ton, I think what you may be seeing is a combination of a few things. First, and this is my error, somehow I had the sharpening in Lightroom turned way up to 50, which is much higher than I normally set it. Second, the sun is sidelighting the bare branches giving them somewhat of an appearance of false content, but looking at the original RAW image very closely, it appears more like bright/dark contrast than creation of content. I don't see anything in the greens at all. Third, there may be something going on in the creation of reduced size image, creation of a JPEG then whatever Google does to the images.

      Looking at the original at 100% at first appeared to look like what we got from Lightroom in the beginning of the X-Trans/Lightroom partnership, if some still exists (and I might not be able to absolutely determine it may), it is ever so slight and this would be the first image of mine on which there is any appearance of it. That being said, I don't think it is.

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    2. Dennis, Looking more closely I also see artifacts (not the smearing and worms)on the stones, road, windows etc. wich I never see with Fuji. So it must indeed be imageresizereduction, translation and googles black box. Thanks for comforting. Ton

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