Photoshop How To Use: adobe.photoshop.macintosh - 25 new messages in 8 topics

adobe.photoshop.macintosh
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Today's topics:

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TOPIC: Photoshop performance on new Mac Pro "Nehalem"
http://groups.google.com/group/adobe.photoshop.macintosh/t/51c1421c634f2c2f?hl=en
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== 1 of 8 ==
Date: Wed, Mar 4 2009 8:05 am
From: Allen_Wicks@adobeforums.com

No matter how much RAM I add to a machine, the only setting in RAM allocation
I can use in Photoshop is limited to what Photoshop reports it can see,
and that is 3072 MB.

Although apps can only directly address ~3 GB RAM, Mac OS X works with the apps to effectively utilize much more than that. E.g. Adobe engineer Adam Jerugim in 2008 posted: "CS4 (running on OS 10.5.x) will take advantage of all the RAM you have in your system as long as VM OS buffering is active (up to 32GB - I haven't tested more than that)."

The ability under Mac OS X to access large amounts of inexpensive RAM is a big benefit to the tower configuration.

== 2 of 8 ==
Date: Wed, Mar 4 2009 8:58 am
From: JimGoshorn@adobeforums.com

Allen,

Since I am planning on getting a new Mac I went looking on my PS CS4 CD and I didn't see any plug-in by that name. Is it something that is automatically installed on an Intel Mac?

== 3 of 8 ==
Date: Wed, Mar 4 2009 9:08 am
From: Buko

John Nack has stated that CS5 will be 64bit

== 4 of 8 ==
Date: Wed, Mar 4 2009 9:53 am
From: DYP@adobeforums.com

John Nack has stated that CS5 will be 64bit

And Chris Cox has said "All we've said we're doing is rewriting the UI code"

So can just writing the UI code make PSCS5 64bit?

== 5 of 8 ==
Date: Wed, Mar 4 2009 10:31 am
From: Chris_Cox@adobeforums.com

Yes, the barrier to going 64 bit on Macintosh is Apple's deprecation of Carbon UI APIs and forcing applications to redo their UI code using Cocoa.

== 6 of 8 ==
Date: Wed, Mar 4 2009 10:33 am
From: Ann_Shelbourne@adobeforums.com

Obviously whatever they are doing CAN make CS5 run in a 64-bit environment or John Nack and others would not have stated publicly that "CS5 for Mac will be 64-bit"!

== 7 of 8 ==
Date: Wed, Mar 4 2009 10:36 am
From: Allen_Wicks@adobeforums.com

Since I am planning on getting a new Mac I went looking on my PS CS4 CD
and I didn't see any plug-in by that name.

I do not personally use it but lots of info is available if one googles Photoshop VM OS buffering

== 8 of 8 ==
Date: Wed, Mar 4 2009 11:04 am
From: DYP@adobeforums.com

Yes, the barrier to going 64 bit on Macintosh is Apple's deprecation of
Carbon UI APIs and forcing applications to redo their UI code using Cocoa.

Good, tanks for answering my question.

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TOPIC: 2009 Macs and Peripherals :: General Discussion :: Chapter III
http://groups.google.com/group/adobe.photoshop.macintosh/t/c2f0ebcc850b85d0?hl=en
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== 1 of 4 ==
Date: Wed, Mar 4 2009 8:13 am
From: Allen_Wicks@adobeforums.com

I wouldn't be surprised if you could stuff the Quad with 4 x 4 gig chips
for an actual max of 16 GB

I would be surprised if you could stuff the Quad with 4 x 4 gig chips for an actual max of 16 GB. Apple did this before with low end G5 tower RAM as a way of allowing a lower entry price point without cannibalizing high end sales.

== 2 of 4 ==
Date: Wed, Mar 4 2009 9:57 am
From: JimGoshorn@adobeforums.com

Opinion: with PS files averaging 500-900mb in size, 16gb should be enough memory shouldn't it?

== 3 of 4 ==
Date: Wed, Mar 4 2009 10:28 am
From: Allen_Wicks@adobeforums.com

Yes.

== 4 of 4 ==
Date: Wed, Mar 4 2009 10:33 am
From: PShock@adobeforums.com

Apple did this before with low end G5 tower RAM as a way of allowing a
lower entry price point without cannibalizing high end sales.

Yes, but that was ONLY because of less slots, not because the low-end couldn't accept larger capacity sticks than the high-end. All models of that generation can (still) only accept 1 gig sticks.

This is different.

Of course, it's possible that Apple has instilled something in the new Quad to prevent it from recognizing 4 gig sticks, but given the RAM is the same in all models with the same specs, that's not clear at this point. Time will tell.

Remember, according to Apple, my early 2008 Macbook can only accept up to 4 GB of RAM and yet, I can install 6 GB. <http://eshop.macsales.com/item/Other%20World%20Computing/5300DDR2S6GP/>

-phil

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TOPIC: Adobe Photoshop 3.0 (Mac) Serial Number Input Problem
http://groups.google.com/group/adobe.photoshop.macintosh/t/931713f19535a550?hl=en
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== 1 of 2 ==
Date: Wed, Mar 4 2009 8:36 am
From: Jim_Jordan@adobeforums.com

You might as well look for freeware image editors as Photoshop 3 was so feature deficient by the advent of OS9.

If you really want to run Photoshop, I'd look for a more recent release. The last version of Photoshop to work in SheepShaver (OS9.0.4) should be version 6 (I run 5.5 myself). Version 7 required OS9.1.

In addition to Photoshop, the following image editors work in SheepShaver (OS9.0.4):

* xRes 2
* Painter 3.1
* Corel Photo-Paint 8 LE

I think I picked up all of these for free on magazine coverdiscs. You might find them downloadable somewhere as well.

== 2 of 2 ==
Date: Wed, Mar 4 2009 9:15 am
From: Buko

three cap letters with a stream of numbers, then a hyphen and 3 numbers.

Photoshop 2.5.1 thru 6 had this format it totaled 17 digits.

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TOPIC: New Mac Pros, iMacs and Minis introduced
http://groups.google.com/group/adobe.photoshop.macintosh/t/14ab36a13b239952?hl=en
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== 1 of 1 ==
Date: Wed, Mar 4 2009 9:47 am
From: Paul_Cutler@adobeforums.com

As I recall, that's the port that the new 24" LED Cinema Display uses
to connect with the new laptops.

I think you're right Neil - at the Apple Store one of the accessories you can order with the Mac Pro is an adapter from the Mini Display port to DVI. Neat. Can anyone say ADC?

It's got to be done so off we go…

pbc

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TOPIC: Cursor mouse error
http://groups.google.com/group/adobe.photoshop.macintosh/t/f5198c702e14495f?hl=en
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== 1 of 1 ==
Date: Wed, Mar 4 2009 9:54 am
From: Pedro_Márcio@adobeforums.com

Thanks Neil and Matthias.

I just test what Matthias said and he is right.

Tks a lot!

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TOPIC: 8 bits vs 32 bits? What are the advantages?
http://groups.google.com/group/adobe.photoshop.macintosh/t/54ca5e291ce083d0?hl=en
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== 1 of 7 ==
Date: Wed, Mar 4 2009 10:06 am
From: Ann_Shelbourne@adobeforums.com

Keep files that contain photographic images and gradients in 16-bit for as long as possible; and save your layered Master files as 16-bit RGB.

There are a few filters which still only work in 8-bit and you might have to convert to 8-bits if you really need to use them. But examine the possibility of using them in a separate file with a Smart Object from your original image.

32-bit is for special purposes such as when using HDR.

== 2 of 7 ==
Date: Wed, Mar 4 2009 10:07 am
From: v6v6v6@adobeforums.com

jezzthisisfull, here's a passage from Photoshop CS4: The Missing Manual <http://books.google.com/books?id=f38qA2yg0PYC&pg=PA43&lpg=PA43&dq=how+many+colors+per+channel+32-bit&source=bl&ots=yk1MHp_lAt&sig=OPINN_prhJDcUNSypzOUh1AwxbA> that shed some light on this for me. Here's an explanation of bit depth <http://help.adobe.com/en_US/Photoshop/11.0/WSfd1234e1c4b69f30ea53e41001031ab64-73daa.html> on Adobe's site.

It's easy to get confused, especially with the mix of "bit" usage when it comes to 8-bit per channel vs. 16-bit per channel vs. a 24-bit image, etc.

== 3 of 7 ==
Date: Wed, Mar 4 2009 10:31 am
From: Allen_Wicks@adobeforums.com

Don't obfuscate my ignorance... :)

== 4 of 7 ==
Date: Wed, Mar 4 2009 10:34 am
From: John_Danek@adobeforums.com

Ann, could you explain "special purposes" 32-bit and HDR? I'm not familiar with it, so I'd appreciate it if you could explain it a bit further. I agree with you that staying in 16-bit as long as possible could be beneficial, especially when generated computer gradients where the transitions are much smoother. However, the concern is that when the image is converted to 32-bit ( CMYK ), or a typical 8-bit RGB, the additional bit information ( if any ) will get tossed, but will retain a smoother gradient than an original 8-bit counterpart. For instance, when someone saves their 16-bit ProPhoto RGB image ( a superwide gamut space ), then converts to 8-bit Adobe RGB, and then converts to SWOP CMYK, the additional gamut found in the ProPhoto RGB will be clipped or reduced down to the Adobe RGB gamut. But, even if you retain the 16-bit ProPhoto RGB and go straight to SWOP CMYK, the color will be clipped to fit inside the SWOP space. More color, more gamut? I'm not so sure.

== 5 of 7 ==
Date: Wed, Mar 4 2009 10:49 am
From: Chris_Cox@adobeforums.com

Please, keep the bit counts as per-channel to reduce confusion.

32 bit should mean 32 bits per channel (integer or floating point), not 8 bit per channel times 4 channels, or 16 bit per channel times two channels.
There are 16 bit integers, and floating point formats -- not just 8 bit per channel times two channels, or 5 bits per channel times 3 channels plus a mask bit.
There are 24 bit floating point formats -- not just 8 bit per channel times 3 channels.
etc.

Referring to an image as 32 bit just allows for too many possible interpretations of the bits.
Say what you mean: 32 bit per channel, or 8 bit per channel CMYK, or 8 bit per channel RGBA, etc.

== 6 of 7 ==
Date: Wed, Mar 4 2009 11:10 am
From: Ann_Shelbourne@adobeforums.com

This a huge, complicated and confusing subject which cannot be explained in a few lines here:

Trying to take your questions one by one:

32-bit and HDR: This is a procedure where you can combine a number of digital photographs which were taken with differing exposures for the highlights and for the shadows and combine them into a single image in order to retain a wider dynamic range. (The results that I have seen from the use of this technique have mostly been somewhat bizarre and perfectly hideous!).

For instance, when someone saves their 16-bit ProPhoto RGB image ( a superwide
gamut space ), then converts to 8-bit Adobe RGB, and then converts to
SWOP CMYK, the additional gamut found in the ProPhoto RGB will be clipped
or reduced down to the Adobe RGB gamut.

We need to break that down a bit:

Saves their 16-bit ProPhoto RGB image ( a superwide gamut space ): Correct.

Then re-opens [or duplicates], the Saved 16-bit ProPhoto RGB image and
converts to 8-bit Adobe RGB:

That produces an RGB file which has been "clipped" to fit the smaller AdobeRGB space — but it is still a 16-bit file.

and then converts to SWOP CMYK:

Now you have CONVERTED your RGB colors to generate printing plates that will produce as close a replica as you can get to your Soft-preview of your (current) AdobeRGB image when printed on a Press which EXACTLY matches the conditions dictated by the CMYK Profile that you used.

But you still have a 16-bit per Channel file — UNTIL you change the Image mode to 8 Bits.

if you retain the 16-bit ProPhoto RGB and go straight to SWOP CMYK, the
color will be clipped to fit inside the SWOP space.

Not exactly: Your RGB image will be mapped to individual C, M, and Y Plates, and a Black plate will be generated (using the attributes of your specified CMYK Profile concerning GCR and Total Ink) in order to give you the best reproduction on Press (when real INK hits PAPER!) of your original RGB image.

But do read more on this subject because it is supremely important that you understand it fully.

I highly recommend Dan Margulis' "Professional Photoshop" for gaining a better understanding of this subject.

== 7 of 7 ==
Date: Wed, Mar 4 2009 11:13 am
From: jezzthisisfull@adobeforums.com

thanks, those links in particular were very helpful

"All tools in the toolbox, except the Art History Brush tool, can be used with 16‑bpc images."

actually it was the Art History Brush tool which led me to ask this question

since I am drawing 2D images and use liquify and other filters semi-frequently I think I'll just stick to 8 bit for now...maybe switch with CS 6 or 7 in the future...

Unless someone would suggest a better workflow? These are huge 4k images with 50+ layers and many smart objects...almost all drawn with brush tools.

So, sticking with 8 bits should be fine?

Thanks so much again...all replies were very helpful

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TOPIC: Photoshop text layers might need to be updated - CS3
http://groups.google.com/group/adobe.photoshop.macintosh/t/ba4a205ecf5b8d66?hl=en
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== 1 of 1 ==
Date: Wed, Mar 4 2009 11:19 am
From: Neil_Keller@adobeforums.com

Darned dupe: deletion done diligently.

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TOPIC: Photoshop CS2 Problem
http://groups.google.com/group/adobe.photoshop.macintosh/t/83530e02df869c69?hl=en
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== 1 of 1 ==
Date: Wed, Mar 4 2009 11:31 am
From: James_Routledge@adobeforums.com

When I open my CS2 it opens up but it does not appear on the top tool bar (the with the apple logo in the corner) and if i try to force quit ,CS2 its not listed as open and if i press F3 To display all my open windows its not there :S any ideas ??

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