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Archive 2012 · 5D Mark III and Raw vs. Medium Raw vs. Small Raw
  
 
dkmiles1
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p.1 #1 · p.1 #1 · 5D Mark III and Raw vs. Medium Raw vs. Small Raw


I recently went from full blown RAW to M (Medium) RAW files on my 5D3 and have noticed little if any difference at all between the files - save the fact the disk space they take up is about 30% less with the M RAW files.

Is there anything else accept for the dimensions of the file, is M RAW half a billboard's resolution instead of a whole bill board's worth? Or is there something else? Has anyone else used the M RAW files with good success?



Jun 29, 2012 at 01:40 AM
RobDickinson
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p.1 #2 · p.1 #2 · 5D Mark III and Raw vs. Medium Raw vs. Small Raw


I had a play on the 7D with mRaw.

Apart from space saving it offers o real advantage, not even performance/write speeds.



Jun 29, 2012 at 01:41 AM
ChrisRD
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p.1 #3 · p.1 #3 · 5D Mark III and Raw vs. Medium Raw vs. Small Raw


Apparently the smaller RAW formats are a bit different in ways other than just less resolution and file size...

Explained here by someone who knows a lot more about it than I do...
http://www.fredmiranda.com/forum/topic/906367/2&year=2010#8553893



Jun 29, 2012 at 02:00 AM
malgegg
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p.1 #4 · p.1 #4 · 5D Mark III and Raw vs. Medium Raw vs. Small Raw


I use m raw and image iq I cannot see any difference, the reason is on a trip to Africa I need the extra space


Apr 06, 2016 at 10:02 PM
EB-1
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p.1 #5 · p.1 #5 · 5D Mark III and Raw vs. Medium Raw vs. Small Raw


I tried the mRAW and don't like it at all. Maybe it would be worthwhile if the files were truly RAW, not some processed downsample, and the camera were substantially faster. 21MP is not exactly excessive these days anyway.

EBH



Apr 07, 2016 at 12:14 AM
wallstreetonei
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p.1 #6 · p.1 #6 · 5D Mark III and Raw vs. Medium Raw vs. Small Raw


If you want to visit another site, I posted on POTN a big post on why not to use m or s Raw.

Trust me, never use it - if you care about shadow recovery - the m or s Raw absolutely destroys the ability to do shadow recovery. That said, if you don't care about shadow recovery - go ahead. If you do, be ready for awful brutal green and magenta colours in the shadows.

Don't do it - ever.

here but this is what mRaw shadow recovery looks like

mraw_test-5 by Paul O'Neil, on Flickr

Edited on Apr 07, 2016 at 11:57 AM · View previous versions



Apr 07, 2016 at 12:49 AM
rabbitmountain
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p.1 #7 · p.1 #7 · 5D Mark III and Raw vs. Medium Raw vs. Small Raw


Don't know why anyone would want to use mRAW for space reasons in this day and age. Drive space so cheap nowadays it just doesn't make sense anymore. Could you explain what your issue is with full RAW files?


Apr 07, 2016 at 01:27 AM
EB-1
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p.1 #8 · p.1 #8 · 5D Mark III and Raw vs. Medium Raw vs. Small Raw


wallstreetonei wrote:
If you want to visit another site, I posted on POTN a big post on why not to use m or s Raw.

Trust me, never use it - if you care about shadow recovery - the m or s Raw absolutely destroys the ability to do shadow recovery. That said, if you don't care about shadow recovery - go ahead. If you do, be ready for awful brutal green and magenta colours in the shadows.

Don't do it - ever.

no idea how to post links here but this is what mRaw shadow recovery looks like

https://flic.kr/p/Dq78Ey


Thanks for the info. I never did much analysis of the mRAW files once I noticed the file size and no real change in the camera performance.

You will need to use the UBB style tags for links to https (secure) sites. Here is an example.

EBH



Apr 07, 2016 at 02:27 AM
stanj
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p.1 #9 · p.1 #9 · 5D Mark III and Raw vs. Medium Raw vs. Small Raw


ChrisRD wrote:
Apparently the smaller RAW formats are a bit different in ways other than just less resolution and file size...

Explained here by someone who knows a lot more about it than I do...
http://www.fredmiranda.com/forum/topic/906367/2&year=2010#8553893


And if you read that twice, you may actually get what I was thinking. I must have been very tired when I wrote that Long story short - you lose the ability to perform the step that's most often associated with image quality - the debeyer.

Now one good thing about sRaw is that it greatly reduces memory pressure in the raw decode process, for two reasons - the debeyer step is gone and it so happens to take good amounts of RAM - and even just holding the image in RAM is 1/4 as stressful. Combine that with the pathetic performance of ACR/LR, and you may have a good reason for using this format, especially when you are shooting a 5DS, which basically kills LR. Still, I shoot even my kid party pictures in raw.



Apr 07, 2016 at 03:07 AM
Jeff Donald
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p.1 #10 · p.1 #10 · 5D Mark III and Raw vs. Medium Raw vs. Small Raw


A Canon engineer explained it to me and what my take away was that mraw and sraw are closer to JPEG's than Raw files. They are already in a gamma space rather than linear space like a Raw file. You can't recover blown highlights, lift heavy shadows without severe artifacts as mentioned above.


Apr 07, 2016 at 03:07 AM
 

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ChrisRD
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p.1 #11 · p.1 #11 · 5D Mark III and Raw vs. Medium Raw vs. Small Raw


Wow...someone dug this up with the search engine...huh?


Apr 07, 2016 at 01:51 PM
Daan B
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p.1 #12 · p.1 #12 · 5D Mark III and Raw vs. Medium Raw vs. Small Raw


Yes m/sRAW are bad news when you want to edit the highlights/shadows, especially in LR. I tested this also with the 5Ds and got the same weird green and magenta color casts. Too bad it doesn't work with this camera, because I can see the benefit of lower MP RAW files with a 50MP camera. For the 5D3 I also fail to see the benefit.


Apr 07, 2016 at 02:16 PM
dhphoto
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p.1 #13 · p.1 #13 · 5D Mark III and Raw vs. Medium Raw vs. Small Raw


I used mRAW on my 5D3 for a high volume portrait job and whilst the mRAW files were much easier and quicker to manipulate in Lightroom the space saving was negligible.

If I owned a 50 meg camera I expect I'd use it more.



Apr 07, 2016 at 02:23 PM
Ziffl3
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p.1 #14 · p.1 #14 · 5D Mark III and Raw vs. Medium Raw vs. Small Raw


Some of the stuff people fret over.
I have and will use medium files on the 5D III and S.

I shoot wedding and have yet to have a oh crap can't do this any more moments.

I also edit for another wedding shooter... 3+ years to date.
I run on the dell U2713H monitor with calibration.

Means as a person delivering processed images to clients.... Not an issue.

Just my 2 cents.
-Mark



Apr 07, 2016 at 03:59 PM
Daan B
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p.1 #15 · p.1 #15 · 5D Mark III and Raw vs. Medium Raw vs. Small Raw


Ziffl3 wrote:
Some of the stuff people fret over.
I have and will use medium files on the 5D III and S.

I shoot wedding and have yet to have a oh crap can't do this any more moments.

I also edit for another wedding shooter... 3+ years to date.
I run on the dell U2713H monitor with calibration.

Means as a person delivering processed images to clients.... Not an issue.

Just my 2 cents.
-Mark


What software do you use to edit?



Apr 07, 2016 at 08:10 PM
Ziffl3
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p.1 #16 · p.1 #16 · 5D Mark III and Raw vs. Medium Raw vs. Small Raw


Mr Daan B...... straight up Lr6 stand alone.

I should add ... when I shoot images like formals, bridals, engagement sessions ... I shoot full raw.

I have by accident, shot a bridal on mRaw with the 5Dmk III. I enlarged 2 images to 24" x 36" with no issues.

-Mark



Apr 08, 2016 at 12:46 AM
Ian.Dobinson
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p.1 #17 · p.1 #17 · 5D Mark III and Raw vs. Medium Raw vs. Small Raw


I have the 5D3 and really can't see the point in Mraw (or Sraw) . the space saving on the card is negligible with Mraw and when you consider the cost of having a spare card around i don't think its worth it .

the thing is id always be thinking what if I get 'THAT SHOT' and find that because I've shot it at a lower res in M or S Raw i can't do what I want with it .
if I think the shots won't need the quality and size of full raw i'll still shoot full raw and just deal with them latter anyway



Apr 08, 2016 at 07:28 AM
Daan B
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p.1 #18 · p.1 #18 · 5D Mark III and Raw vs. Medium Raw vs. Small Raw


Ziffl3 wrote:
Mr Daan B...... straight up Lr6 stand alone.

I should add ... when I shoot images like formals, bridals, engagement sessions ... I shoot full raw.

I have by accident, shot a bridal on mRaw with the 5Dmk III. I enlarged 2 images to 24" x 36" with no issues.

-Mark


Ok. I assume you only do some light editing then? Little messing about with shadows and highlights? When I tested this in LR6, all my blacks turned into green when I lifted up the shadows lightly. Which is to expected considering the nature of s/mRAW (as explained by others in this thread)




Apr 08, 2016 at 07:43 AM
Ziffl3
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p.1 #19 · p.1 #19 · 5D Mark III and Raw vs. Medium Raw vs. Small Raw


Light editing is a loose term.... I have had to adjust exposure on ISO 3200 images.
The exposure was off -1.5 - 2 stops.
Think long lens shooting and out shooting your flash coverage in a large reception... as in 1000+ person wedding reception.

While I am not editing landscaping ... I do have to raise shadows either with exposure adjustment and/or shadow slider to obtain good exposure on peoples skin.
So these images on canon bodies .... 5Dmk II (the worse) & 5Dmk III can get pretty muddy.

-Mark




Apr 08, 2016 at 01:39 PM
wallstreetonei
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p.1 #20 · p.1 #20 · 5D Mark III and Raw vs. Medium Raw vs. Small Raw


If you are shooting in a controlled light studio portrait type situation - mRaw is perfect. If you are out shooting for the day and want to post stuff to Social Media - jpgs are perfect. If you are shooting a wedding, use full Raw. If you are a serious pro and really have your stuff and routine down, you can easily shoot a full wedding with mRaw. If you are going to have to save shots in Post because of large DR requirements, do not shoot sRaw or mRaw.

As long as you know that +75 Shadow in LR with Medium or Small Raw turns near blacks to magenta or green you are good to go.



Apr 08, 2016 at 04:21 PM







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