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Thread started 24 Jan 2006 (Tuesday) 17:42
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Question....Problem....I don't know????

 
Reeforbust
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Jan 24, 2006 17:42 |  #1

OK....

I shot some test photo's in RAW and used RAW Shooter Essentials 2005 to turn them into a Tif so I can get them to PhotoShop 7 to work on them.

I went into the JPEG optimizer and it shows you the Un-Compressed Bytes and The new RAW Tif has the same amount of Bytes as the JPEG's I shot the other day...........

I thought there would be more in the RAW photo.......Am I wrong???


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Reeforbust
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Jan 24, 2006 17:59 |  #2

For some reason the image I get is WAY grainy compared to shooting in JPEG???? Obviously I'm a RAW retard??:cry:


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tim
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Jan 24, 2006 18:10 |  #3

It's most likely user error. Make sure of your settings, generate the TIFF and JPG, and have another look.


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dbump
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Jan 24, 2006 18:24 |  #4

I'm not familiar with the Jpeg optimizer (is that a feature/tool in PS7?), but it makes sense that two uncompressed images of the same resolution and color depth would have the same amount of bytes. Even though many of the pixels in the jpeg are all the same color value (due to the compression algorithm), when uncompressed, they still require 8 bits per pixel to represent them on a display or in an image manipulation program.
Without seeing an example, it's hard to know what's going on, but two thoughts:
Is RawShooter configured to convert at a scale of 100%? You can set it to convert the images to a smaller X by Y pixel count, and that would appear grainy if displayed at the same physical size as a jpeg with more pixels.
A longer shot: the in camera jpeg processing applies a certain amount of sharpening, so jpegs can look better than completely unprocessed TIFF images straight out of RAW conversion. However, they'd tend to look soft/out of focus, not grainy.
If you convert the RAW image to jpeg instead of TIFF, how do they compare? And can you post an example converted jpeg that seems grainy?


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Reeforbust
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Jan 24, 2006 18:43 as a reply to  @ tim's post |  #5

tim wrote:
It's most likely user error. Make sure of your settings, generate the TIFF and JPG, and have another look.

I can guarantee that!!!!:D :lol:

All I do is open the RAW file in raw shooter essentials and save as a Tif???? Have no idea what I am doing wrong??


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tim
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Jan 24, 2006 19:13 |  #6

dbump, tiff isn't compressed at all, jpg is highly compressed.

AFAIK in RSE you just choose TIFF or JPG in the dropdown box, make sure all resolution and quality settings are on maximum. If that no work use DPP that came with the camera I guess, or wait until someone who knows RSE shows up here.


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dbump
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Jan 24, 2006 20:39 |  #7

Tim, definitely (though there are non-lossy tiff compressions, I believe). I meant that the computed uncompressed size of the jpeg should be the same as the actual size of an 8 bit tiff from the same camera. It's just that you never really have to deal with the 'uncompressed' size of a jpeg, practically speaking.

Reeforbust, I assume you have already toggled the More Options... button on the Batch Convert tab of RawShooter, since you've changed from the default JPEG output to TIFF. Below the File Format options, make sure the scale is set to 100.00.
Before you convert, if you zoom in to 100% within RawShooter (press ctrl-tab to toggle between 100% and fit-on-screen), does the image look as grainy as the converted tiff does in Photoshop?
If you can save a crop of your grainy image in PS and post it, that may help folks here make an immediate suggestion.


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tim
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Jan 24, 2006 20:51 as a reply to  @ dbump's post |  #8

dbump wrote:
Tim, definitely (though there are non-lossy tiff compressions, I believe). I meant that the computed uncompressed size of the jpeg should be the same as the actual size of an 8 bit tiff from the same camera. It's just that you never really have to deal with the 'uncompressed' size of a jpeg, practically speaking.

I can't say I agree with that totally, but I can see where you're coming from. TIFF is lossless, JPG is lossy, so you're comparing apples with oranges. Perhaps when you load them in photoshop it will take up the same about of memory for each, since there's the same number of pixels and bits per pixel. The TIFF has quite a lot more information so should always be larger. I don't know of any Canon camera that outputs TIFFs, perhaps the 1 series do but I doubt it - too inefficient.

If you have RSE generate a TIFF and a JPG i'd expect the TIFF to be much larger maybe 5 times, maybe 10 times, can't really say since I don't really use TIFF, I use PSD and JPG.


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Jan 24, 2006 21:07 as a reply to  @ dbump's post |  #9

I know nothing about RAW so maybe I just don't know how to get the quality out of it???

This is as a JPEG...............

IMAGE NOT FOUND
HTTP response: 404 | MIME changed to 'image/gif' | Byte size: ZERO | PHOTOBUCKET ERROR IMAGE


This is a Tif...............

IMAGE NOT FOUND
HTTP response: 404 | MIME changed to 'image/gif' | Byte size: ZERO | PHOTOBUCKET ERROR IMAGE

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Jan 24, 2006 21:11 as a reply to  @ Reeforbust's post |  #10

And for those that are wondering.............​..

IMAGE: http://i22.photobucket.com/albums/b329/aquaticdesigns/Meandwifey.jpg

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tim
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Jan 24, 2006 21:19 |  #11

I have no idea what you're doing wrong... but I bet it is user error. Can't help any more sorry.

One comment about those photos is to stand further away and use a longer lens, I can see a lot of distortion from using a wide angle lens in that pic. I can also see what I think is your reflection in the photo - reduce the ambient light in the room, and think about the best way to light your picture. White ballance may be an issue. If it's just a test shot though it's not important.


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Reeforbust
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Jan 24, 2006 21:23 as a reply to  @ tim's post |  #12

tim wrote:
I have no idea what you're doing wrong... but I bet it is user error. Can't help any more sorry.

One comment about those photos is to stand further away and use a longer lens, I can see a lot of distortion from using a wide angle lens in that pic. I can also see what I think is your reflection in the photo - reduce the ambient light in the room, and think about the best way to light your picture. White ballance may be an issue. If it's just a test shot though it's not important.

I just took those pics real quick to show the grainy look........Actually it doesn't look as bad on here as it does on my computer.

I'm sure it's something I'm doing.......Time will fix it all!!!;)


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Jan 24, 2006 21:25 as a reply to  @ tim's post |  #13

Okay; on your photohosting site; they are lips.jpg and lips2.jpg

It's not a tiff anymore

So; when you saved lips2.jpg; I assume you saved it from a tiff.

How did you get from .tif to .jpg in lips2?


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Reeforbust
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Jan 24, 2006 21:35 |  #14

Got another Question....

The Tif and the JPEG are the same amount of Bytes BUT when I go to look at the size of the picture it says:

JPEG = 27"x36"

TIFF = 6.473"x8.633"

Why is that???


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Reeforbust
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Jan 24, 2006 21:39 as a reply to  @ Tdragone's post |  #15

Tdragone wrote:
Okay; on your photohosting site; they are lips.jpg and lips2.jpg

It's not a tiff anymore

So; when you saved lips2.jpg; I assume you saved it from a tiff.

How did you get from .tif to .jpg in lips2?

Hmmmmmm..........NO IDEA...............Whe​n I saved it, I went to "save as" and it came up Tiff???? Then I uploaded it to Photobucket.com????? Maybe thats why it looks better on here than on my computer!!

It's a Tiff on my computer when I'm looking at it.


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