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FORUMS Canon Cameras, Lenses & Accessories Canon EOS Digital Cameras 
Thread started 24 Aug 2016 (Wednesday) 21:29
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Canon 5D Mark IV -- Time to Discuss!

 
Mike
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Sep 26, 2016 09:32 |  #3196

I need to look more into it too...I have no idea what affect it has really! :oops:


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Sep 26, 2016 09:55 |  #3197

http://photo.stackexch​ange.com …le-the-size-of-a-raw-file (external link)

This will help, DLO altered raw is stored in the raw along with the original raw, it appears.

From Canon wrote:
Digital Photo Professional writes additional information for the DLO processing to the RAW image; the result is that the RAW image file will increase in size, often significantly.


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Post edited over 3 years ago by CyberDyneSystems. (2 edits in all)
     
Sep 26, 2016 10:23 |  #3198

MORE ON 5D4 Auto Focus:

Took the 5D4 with 100-400mm versionII and 1.4X MkII (that's a version two t-con) to the beach yesterday.

Here's a quick rule of thumb:

AF accuracy > FPS!!

With 1D4 or 7D2, I can shoot 10 frames per second. Since my first 1D (8FPS) I have been content with the hit rate in a burst during fast erratic action being maybe 50-60%. This is what I have come to expect while tracking fast moving subjects. Most of the missed shots can be attributed to my own ability to maintain the subject under the active AF points, etc,.

Looking at yesterdays RAW files, (forgot to put an SD in for jpegs too) I notice 100% hit rate!

I have not even delved into any of the AF settings beyond enabling expansion, which in this case is very few AF points do to not having a MkIII T-Con (only 9 AF points available)

This of course will prompt me to test FPS/focus tracking in more detail, but so far, it looks very good.


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Sep 26, 2016 10:43 |  #3199

How does DLO work? I have never heard of it untill reading about it here...


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Post edited over 3 years ago by MatthewK. (3 edits in all)
     
Sep 26, 2016 11:03 as a reply to  @ don1163's post |  #3200

According to Canon (http://web.canon.jp …ng/dlo/effect/i​ndex.html) (external link):

Canon wrote:
"After passing the lens and various filters, the light has diverted from the ideal condition as it reaches the image sensor where the image will be formed. This is due to the influence of factors such as aberrations, diffraction, and the low-pass filter. If these influences can be compensated for using highly precise and specific data, the result ideally would be the original and optimal image.

This is the unique principle behind the Digital Lens Optimizer. Factors contributing to optical image deterioration as the light passes through the lenses and filters in the camera were identified and converted into mathematical functions (optical transfer functions (OTF)). By applying the inverse functions to the captured image, the state of the light (image quality) can be returned to approach the state that the incident light had before entering the camera.

The factors such as aberrations, diffraction, and low-pass filter influence differ for different lenses and cameras, and they also are dependent on shooting parameters. The Digital Lens Optimizer therefore uses inverse functions that are carefully optimized and based on precise data. This makes it possible to compensate even for complex and asymmetric aberrations such as coma."

During my use, there were some instances where DLO significantly improved sharpness and clarity. But, it also really slows down the camera FPS. Prior to the 5D4, in order to apply DLO to images, you 'd have to use DPP. Now, it's available in-camera, which is awesome (because it means I can skip DPP).

I think I'm going to keep it on most of the time though, unless I am going to be shooting anything that'll require rapid fire FPS.

EDIT: that site also says that DLO isn't available when using extenders -? I'll verify that when I get home today..


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Sep 26, 2016 11:06 |  #3201

MatthewK wrote in post #18140939 (external link)
According to Canon (http://web.canon.jp …ng/dlo/effect/i​ndex.html) (external link):

During my use, there were some instances where DLO significantly improved sharpness and clarity. But, it also really slows down the camera FPS. Prior to the 5D4, in order to apply DLO to images, you 'd have to use DPP. Now, it's available in-camera, which is awesome (because it means I can skip DPP).

I think I'm going to keep it on most of the time though, unless I am going to be shooting anything that'll require rapid fire FPS.

Is that true though (skipping DPP) or will another converter just see the original RAW data and ignore the added DLO correction information?


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MatthewK
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Sep 26, 2016 11:15 |  #3202

sploo wrote in post #18140945 (external link)
Is that true though (skipping DPP) or will another converter just see the original RAW data and ignore the added DLO correction information?

I hope not... I'll do a test later today and find out. Either the data is written into the RAW, or it's a side car.


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Sep 26, 2016 11:30 |  #3203

I'm assuming DLO only works with canon glass?


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Sep 26, 2016 11:34 |  #3204

MatthewK wrote in post #18140948 (external link)
I hope not... I'll do a test later today and find out. Either the data is written into the RAW, or it's a side car.

Is DLO the same thing or part of the lens corrections?

With my 5Dmkiv and my Sigma 35A, shooting RAW with lens corrections enabled, I was seeing the weird rings on the image while reviewing on the LCD screen, as well as in DPP. However, these were nowhere to be found in Lightroom - so I'm guessing not everything that is stored in the RAW file is seen/used?


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Sep 26, 2016 11:58 |  #3205

Talley wrote in post #18140959 (external link)
I'm assuming DLO only works with canon glass?

Yes, only with Canon glass.

freestylee30 wrote in post #18140963 (external link)
Is DLO the same thing or part of the lens corrections?

With my 5Dmkiv and my Sigma 35A, shooting RAW with lens corrections enabled, I was seeing the weird rings on the image while reviewing on the LCD screen, as well as in DPP. However, these were nowhere to be found in Lightroom - so I'm guessing not everything that is stored in the RAW file is seen/used?

That's rather telling then, that the DLO corrections aren't recognized by third party photo editing software. People over on FM say the RAW files aren't affected until you use DPP too.


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Sep 26, 2016 12:00 |  #3206

My images are turning out great without it.... I'm moving on.


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Sep 26, 2016 13:10 |  #3207

Talley wrote in post #18140986 (external link)
My images are turning out great without it.... I'm moving on.

I like your attitude Talley - enjoy what you have and don't complain about the small things that don't impact your enjoyment of the tools you have. I wish more folks would think like that.



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Mike
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Sep 26, 2016 13:16 |  #3208

So having just shot a few images with DLO on I can say this: it's slow! I think it'll be good for landscape shooting but I'm turning it off.


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Sep 26, 2016 13:24 |  #3209

Here's the shot, from a series of 6, DLO makes about a second or two delay between shots, no good for an excited subject.

(jpeg transferred to phone via WiFi and Canon app, processed in Lr mobile)


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Sep 26, 2016 13:45 |  #3210

CyberDyneSystems wrote in post #18140904 (external link)
MORE ON 5D4 Auto Focus:

Took the 5D4 with 100-400mm versionII and 1.4X MkII (that's a version two t-con) to the beach yesterday.

Here's a quick rule of thumb:

AF accuracy > FPS!!

With 1D4 or 7D2, I can shoot 10 frames per second. Since my first 1D (8FPS) I have been content with the hit rate in a burst during fast erratic action being maybe 50-60%. This is what I have come to expect while tracking fast moving subjects. Most of the missed shots can be attributed to my own ability to maintain the subject under the active AF points, etc,.

Looking at yesterdays RAW files, (forgot to put an SD in for jpegs too) I notice 100% hit rate!

I have not even delved into any of the AF settings beyond enabling expansion, which in this case is very few AF points do to not having a MkIII T-Con (only 9 AF points available)

This of course will prompt me to test FPS/focus tracking in more detail, but so far, it looks very good.

What subject did you shoot and what AF settings?


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Canon 5D Mark IV -- Time to Discuss!
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