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Old 30-11-2017, 03:33 PM
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Question Picture file size increasing when converted ?



Ok so when using Lightroom ( 5 ) it will not read my raw files ( .RW2 ) so after a bit of research I ended up on Adobe web page and says that file extension is not supported as its fairly new . No bother , they have a converter to change the file extension to .DNG so Lightroom can read it , nope .RW2 not covered by that either , the converter can't even read the files . Ok so went and found another prog and it lets me choose many extensions to choose , the only one that seemed to work is Tiff - Tiff revision 6 .
So all good , pics now load and can be edited fine in light room BUT .......

When I convert my .RAW to .Tiff the file goes from being say 18 megs ish to around 45 megs ! The converter is XnConvert , its free .

I have played around with all the settings the converter , do not compress , don't resize etc etc and tried changing thing like pixel bit depth and various other things . Anything I have tried either changes the pic dimensions , changes the file size , either halving it or when in the only setting that seems to keep the same dimensions the file size jumps up to like 45 megs ?? LIke wtf ??

Oh and by the way I am totally new to picture processing and photography all bar a point and shot in auto so the leaning curve is vertical !!!

So please and thanks for any help , maybe one of you experts could download said prog and run a RAW through it and see whats what ???
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Last edited by sweenytodd; 30-11-2017 at 03:47 PM.
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Old 30-11-2017, 03:58 PM
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Default Re: Picture file size increasing when converted ?

Where the hell have you been. .?
S.
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Old 30-11-2017, 04:08 PM
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Default Re: Picture file size increasing when converted ?

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Where the hell have you been. .?
Just what I was thinking S...;-)

Give Capn Fishy a shout Danny....
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Old 30-11-2017, 04:41 PM
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Default Re: Picture file size increasing when converted ?

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Originally Posted by sweenytodd View Post
Ok so when using Lightroom...
Hi Danny - aye long time, no see.

OK, first things first... TIFF files are naturally a lot larger than RAW files, so nothing is wrong there. Explanation from DP Reviews...

"Each pixel of a TIFF file has data to describe the fulll RGB colour. In most digital cameras sensor pixels are different, they can only see one colour, red green or blue. They are in a mosaic pattern with twice as many green pixels as red or blue - because our eyes are more sensitive to green.

All that the RAW file has to record is the one-colour data from each pixel. The RAW converter programme interpolates the one-colour per pixel RAW file into the three colour per pixel TIFF file. This is one of the reasons why cameras need a low pass (defocusing) filter in front of the sensor. A pattern of fine dark to light transitions falling on the mosaic of colour pixels on the sensor could be misinterpreted as colour information so you would get colour fringing effects on fine picture detail if the low pass filter was missing."

You can compress TIFFs and you certainly want to make sure they are 8-bit, rather than 16-bit. If it's any consolation, if I make an uncompressed 16-bit TIFF from my camera, it is over 100 MB. However, I never need to do that in practice. For most of my images, I process the RAW and make a JPEG from it - either low-res for email/website/etc, or high-res for printing.

Every new camera has a slightly different RAW file format, and they all need to be read independently. If your version of Lightroom is older than your camera, it will not be able to read the RAWs without updating it. Therefore, the best thing to do is update your Lightroom so that it has the latest camera RAW-readers onboard. Even if it is a Long-John Silver version, you should be able to update the Adobe Camera RAW section (ACR), I think... I am not certain, as I don't use Lightroom myself.

The invention of the DNG (.dng) format was to combat all the different RAWs and it makes one universal format from any RAW. I have Adobe DNG converter on my PC and it works fine with any RAW file I give it. I don't know why it is not working with your RAWs. Maybe you are not feeding them to it quite right, or maybe the DNG converter itself needs updated - is your camera a very very new model?

You could try emailing me one of your RAW files and I can have a play with it. 18 meg should just about get through the gate, or if it fails, you could put it on the cloud and send me a link.

Col
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Old 30-11-2017, 05:14 PM
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Default Re: Picture file size increasing when converted ?

Well lads hows things , hope you all are well ?? Yep been a while , had a few things going on but will not bore you with it !

Col , thanks for that reply .

Ok the Adobe converter I got is from them and yes the latest one and think I loading them correctly ?

Camera model is not just out , think its about a year on the market . I not tell you what it is as you would surely not reply or help me anymore

I don't really want to update Lightroom as its my understanding you can't just have a perpetual version on PC anymore , its trying to force all the CC stuff ?? and cloud ? Plus monthly subs ?? I could be wrong ?? All these things I don't understand or want to get pushed into . Oh and its is Lightroom 5 as bought it off Ebay the other other day , it will do me for now as like I said all new to me .

I have put the converter on 8 bit , its says grey scale next to that though and yet the file is still in colour and still 45 megs ? The size doesn't matter ( though would be nice to keep as it was , around 18 - megs ) , it was just an odd thing to me to see and file increase in size ...

Big ask , but don't suppose you could download said converter and run RAW though is and let me know how I should have it set .

https://www.xnview.com/en/xnconvert/#downloads
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Last edited by sweenytodd; 30-11-2017 at 05:35 PM.
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Old 30-11-2017, 05:38 PM
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Default Re: Picture file size increasing when converted ?

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Originally Posted by sweenytodd View Post
Big ask , but don't suppose you could download said converter and run RAW though is and let me know how I should have it set .

https://www.xnview.com/en/xnconvert/#downloads
I'll not install it on my PC, Danny, as I like to keep it a racing snake, so it runs as fast as pos with big weights... like the Photoshop CC that I use. I have a laptop that I can try it on though. Can we try the RAW thing first? Can you send me a RAW file? If your camera is a year old, then Adobe DNG should convert it OK. You really want to go down the DNG route if at all possible, rather than have the faff of making TIFF files. I believe Lightroom is highly DNG-friendly - my mate uses it, and he automatically converts all his RAWs to DNGs for use in Lightroom.

Col
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Old 30-11-2017, 05:46 PM
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Default Re: Picture file size increasing when converted ?

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Originally Posted by sweenytodd View Post
Camera model is not just out , think its about a year on the market . I not tell you what it is as you would surely not reply or help me anymore
Ha-ha - don't worry about what camera it is. I'm not one of those 'the right gear is everything', armchair photographers.

Col
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Old 30-11-2017, 05:56 PM
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Default Re: Picture file size increasing when converted ?

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Originally Posted by Cap'n Fishy View Post
I'll not install it on my PC, Danny, as I like to keep it a racing snake, so it runs as fast as pos with big weights... like the Photoshop CC that I use. I have a laptop that I can try it on though. Can we try the RAW thing first? Can you send me a RAW file? If your camera is a year old, then Adobe DNG should convert it OK. You really want to go down the DNG route if at all possible, rather than have the faff of making TIFF files. I believe Lightroom is highly DNG-friendly - my mate uses it, and he automatically converts all his RAWs to DNGs for use in Lightroom.

Col
Ah ok no worries , OK I will email you a file , please don't shot me when you read the Exif and see what I am using Like I said this my first camera and after lots ( 2 years ) or reading and saving I chose it because it suits what I want for now , that may change in the future ...

Ok PM me email addy please and I'll send one on , please take into account I am totally new to photography . Its taking me long time to even get my head round the camera let alone this processing of raw . I gone straight into RAW ( and Jpeg ) as don't want to be trapped into just shooting Jpeg all the time and like the idea of RAW processing giving a world of 'artistic licence' .. I will tell people I am an Artist when they say my pics look $h1t !

---------- Post added at 05:56 PM ---------- Previous post was at 05:55 PM ----------

Quote:
Originally Posted by Cap'n Fishy View Post
Ha-ha - don't worry about what camera it is. I'm not one of those 'the right gear is everything', armchair photographers.

Col

Haha just seen that after typing my last post
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Old 30-11-2017, 06:07 PM
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Default Re: Picture file size increasing when converted ?

Quote:
Originally Posted by Cap'n Fishy View Post
Ha-ha - don't worry about what camera it is. I'm not one of those 'the right gear is everything', armchair photographers.

Col
No ... but it would help work out which RAW to DNG converter will work (which has to be preferable than TIFFs). A year-old camera should be supported by now.

.RW2 is Panasonic ... if it's one of these listed Adobe's DNG converter should work - perhaps you've tried already. Note that some RAW formats end up larger as DNG anyway.

And I'm 100% with the OP re. the subscription model for LR. Grrrrr.
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Old 30-11-2017, 06:19 PM
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Default Re: Picture file size increasing when converted ?

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Originally Posted by sweenytodd View Post
Ok PM me email addy please and I'll send one on , please take into account I am totally new to photography . Its taking me long time to even get my head round the camera let alone this processing of raw . I gone straight into RAW ( and Jpeg ) as don't want to be trapped into just shooting Jpeg all the time and like the idea of RAW processing giving a world of 'artistic licence' ..
Will do Danny. It's great to see someone getting straight into RAWs. It's the dogs'.

Col
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