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 Post subject: Canon 40D
PostPosted: Sun Dec 16, 2007 9:54 pm 
Recently I bought my Canon 40D, later installed CS3 with the latest Adobe Camera Raw… and was surprised that one of the options I mostly wanted in 40D- sRAW format is unreadable by CS3… Does anybody encounter the same problem?


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 Post subject:
PostPosted: Sun Dec 16, 2007 10:09 pm 
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Hello pravdo, and welcome to the friendly Camera Labs forum!
I moved your post to the Canon section as it is likely to attract more answers there.

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 Post subject:
PostPosted: Sun Dec 16, 2007 10:30 pm 
thanx!


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 Post subject:
PostPosted: Mon Dec 17, 2007 12:23 am 
I'm not sure about that but besides the size, what's wrong with RAW over sRAW?


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 Post subject: Re: Canon 40D
PostPosted: Mon Dec 17, 2007 12:25 am 
pravdo wrote:
Recently I bought my Canon 40D, later installed CS3 with the latest Adobe Camera Raw… and was surprised that one of the options I mostly wanted in 40D- sRAW format is unreadable by CS3… Does anybody encounter the same problem?


Have you been to Adobe web site to download the latest camera raw file, if not try here http://www.adobe.com/support/downloads/ ... rm=Windows and the latest vesion 4.3.1 is on this page.


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 Post subject:
PostPosted: Mon Dec 17, 2007 12:32 am 
Hey bob, how about telling Defiant off for not using BBCode?

Only joking guys hehehe

Yes, the RAW update may be the fix you need.

"Camera Raw 4.3.1 update

This new version of the Camera Raw plug-in replaces the original Camera Raw plug-in that was installed with Adobe Creative Suite 3, Adobe Photoshop CS3, Adobe Photoshop Elements 5.0 and 6.0 and Premiere Elements 3.0 and 4.0 software."


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 Post subject:
PostPosted: Mon Dec 17, 2007 2:22 am 
To clarify:

"S-raw is a reduced resolution raw with less than 2.5 megapixels. It's a mistake to use s-raw to save file size: it has one-quarter the area resolution of JPG. S-raw throws away 75% of your pixels, while JPG throws away none."

"S-raw lets you do all the color and exposure fiddling of raw, but with a fraction of the resolution."

"S-raw is a very poor way to reduce file size and loses far more visible image quality than JPG".

It sound to me as if s-RAW is not a format to use.


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 Post subject: about sRAW
PostPosted: Mon Dec 17, 2007 7:44 am 
Thanx to all. That was my first posting... as well as my first encounter with DSLR as till now I used analogue Canon A1.
I got all the answers I wanted, even more.

I didn't know that details about sRAW... I thought it's just RAW but smaller,
as a good analog picture but printed on size 10x15 cm. :-)

Now I see why in the pro reviews they say that no one will use that "innovation" of Canon.

Thanx again to all!!!


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 Post subject:
PostPosted: Mon Dec 17, 2007 10:16 am 
G wrote:
Hey bob, how about telling Defiant off for not using BBCode?

If I knew how I would, and as the link was not that long I thought "No Probs" and BTW it's "Defiance" :lol:


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 Post subject:
PostPosted: Mon Dec 17, 2007 10:43 am 
Glad to have helped make sense of sRAW.

Sorry Mr Defiance. Same here, I would if I could but Sir Bob (only messing about Bobby) showed me the light.

Here the info:

http://www.cameralabs.com/forum/faq.php?mode=bbcode#8

:lol:


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 Post subject:
PostPosted: Mon Dec 17, 2007 11:56 am 
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G & Roy,

Hey guys, could we keep this thread on topic please. :wink:

pravdo,

May I offer my own belated but very warm welcome to the CameraLabs forums.

G wrote:
To clarify:

"S-raw is a reduced resolution raw with less than 2.5 megapixels. It's a mistake to use s-raw to save file size: it has one-quarter the area resolution of JPG. S-raw throws away 75% of your pixels, while JPG throws away none."

"S-raw lets you do all the color and exposure fiddling of raw, but with a fraction of the resolution."

"S-raw is a very poor way to reduce file size and loses far more visible image quality than JPG".

It sound to me as if s-RAW is not a format to use.

While it's true to say that JPEG throws away none of your pixels it is still effectively a lossy form of compression so you can lose resolution and induce some artefacts by using it, particularly when high compression settings (i.e. small file sizes) are used.

In addition to G's list may I add that:

"sRAW allows more shots to be held in the camera's buffer."

So sRAW does have its uses but they are pretty specialised. With the huge increase in CF card capacity in recent years file size is not often an issue but, if you don't expect to produce large prints but want to retain the post-processing flexibility that RAW files offer, sRAW may be an option to consider, especially if you are shooting long continuous bursts at 6.5fps. :idea:

Bob.

_________________
Olympus OM-D E-M1 + M.Zuiko Digital ED 12-40mm f/2.8, Lumix 7-14mm f/4, Leica DG Summilux 15mm f/1.7 ASPH, M.Zuiko Digital 45mm 1:1.8, M.Zuiko Digital ED 75mm 1:1.8.
Leica D Vario-Elmar 14mm-150mm f/3.5 - f/5.6 ASPH.
OM-D E-M5, H-PS14042E, Gitzo GT1541T, Arca-Swiss Z1 DP ball-head.
Astrophotography: TEC 140 'scope, FLI ML16803 camera, ASA DDM60 Pro mount.


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 Post subject:
PostPosted: Mon Dec 17, 2007 5:34 pm 
Sir Bob, we were just having a bit of fun.

""S-raw is a very poor way to reduce file size and loses far more visible image quality than JPG".

Yeah but your comments don't stand up Bob if this is true. JPG is a standard.

The best option is RAW or may be just go with highest quality JPG if buffer is an issue. You can get great shots with JPG. It all depends on the creativity of the shooter not the format or the gear. People forget that.

I was up until 5am reading about all this. I have a dedicated book on RAW coming soon so I should be quite expert and be able to give a more definitive answer to this.

Bob would you rather I didn’t call you Sir Bob, when I have the devil in me. I mean no harm buddy. you can call me Sir G, if you like :twisted:

I'm going to start a threat on 40D setting. May be we can work together to get the best settings and then we can leave it at that.

One important settings if no other is used is setting is C.Fn II-3 Highlight tone priority = 1 Enable – greater dynamic range possible.


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 Post subject:
PostPosted: Mon Dec 17, 2007 7:05 pm 
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Hi G,

As you know, using sRaw means you get half the linear resolution. The fact that Canon includes it as an option on high end cameras such as the EOS-1D Mark III is enough for me to know that it has its uses. As a result I am quite happy to stand by my advice that "if you don't expect to produce large prints but want to retain the post-processing flexibility that RAW files offer, sRAW may be an option to consider".

--------------

pravdo, please forgive another "off-topic" excursion in your thread while I take a moment to respond to G's questions.

I'll pass on any collaborative ventures but "Thank You" for the offer. I am sure forum members will welcome your thoughts but please bear in mind, as you prepare, that there is no "one size fits all" best setting for the 40D, or any camera. Highlight Tone Priority (HTP) has its uses (a bit like sRAW) but if it just made everything better all the time Canon wouldn't even offer the option to turn it on (shipping default is off) - they would enable it all the time. I have tried it and generally prefer to leave it off and so retain the option of setting ISO 100.

When you start your new 40D thread (not here please :!: ) would you take the time to provide sources for your assertion that HTP increases the dynamic range as I seem to have been labouring under the misapprehension that HTP works by modifying the tone curve and that the dynamic range of the sensor remains the same.

And yes, please drop the childish epithets. 8)

Bob.

_________________
Olympus OM-D E-M1 + M.Zuiko Digital ED 12-40mm f/2.8, Lumix 7-14mm f/4, Leica DG Summilux 15mm f/1.7 ASPH, M.Zuiko Digital 45mm 1:1.8, M.Zuiko Digital ED 75mm 1:1.8.
Leica D Vario-Elmar 14mm-150mm f/3.5 - f/5.6 ASPH.
OM-D E-M5, H-PS14042E, Gitzo GT1541T, Arca-Swiss Z1 DP ball-head.
Astrophotography: TEC 140 'scope, FLI ML16803 camera, ASA DDM60 Pro mount.


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 Post subject:
PostPosted: Mon Dec 17, 2007 10:38 pm 
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Hi G,

As your reply to my previous post above constituted almost an entire page about Highlight Tone Priority (despite my request not to continue to take this thread off-topic) I have split it out. Those who would like to follow and contribute to that interesting topic may do so at the thread Highlight Tone Priority - Should you use it?.

Bob.

_________________
Olympus OM-D E-M1 + M.Zuiko Digital ED 12-40mm f/2.8, Lumix 7-14mm f/4, Leica DG Summilux 15mm f/1.7 ASPH, M.Zuiko Digital 45mm 1:1.8, M.Zuiko Digital ED 75mm 1:1.8.
Leica D Vario-Elmar 14mm-150mm f/3.5 - f/5.6 ASPH.
OM-D E-M5, H-PS14042E, Gitzo GT1541T, Arca-Swiss Z1 DP ball-head.
Astrophotography: TEC 140 'scope, FLI ML16803 camera, ASA DDM60 Pro mount.


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 Post subject:
PostPosted: Wed Dec 19, 2007 12:27 pm 
pravdo check out the link furnished by Bob above. It may help you decide on HTP too.

I'm working through the settings of the Canon 40D, and as mentioned by Bob, they will be linked as a single page in time. This may aid you.

I would stick with the RAW format pravdo but buy a bigger CF card.


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