Need help undersatnding resolution.

I exported one picture using different JPG compressions. I ended up with files ranging from 1.3MB to 127KB. I printed each as 4x5 & 8x10 to see what compression was acceptable.
I then opened each in Photoshop and was surprised to see that they all had the same number of pixels and pixels-per-inch (2048x1536 @ 240ppi).
I don't get it. I thought the low-res JPG would have fewer pixels. When zooming-in however, I see that there are just as many pixels but the color of each is different. The low-res picture has adjacent pixels sharing similar values (resulting in pixelation) but each pixel has slightly different color values.
Can someone explain this to me? is it better to resize in Photoship with the Image Size command and reduce the pixels-per-inch?
Thanks
-Ed

Ed,
I believe that you are confusing resolution and compression. All of your JPEG's are the same resolution, which is why the number of pixels is the same in PS. Changing the compression does not change the resolution. You can change the file size of a closed JPEG by either increasing the compression (as you did) or by leaving the compression the same and reducing the resolution. Compression works by throwing away data and representing similar areas in an image with fewer values to make the image smaller in file size, but looking approximately the same. As you throw away more and more data with higher compression values, you get the smaller file size at the expense of the quality of the image (which you saw as pixelation). When you open the image, it is reconstructed to the same number of pixels, even though more adjacent pixels have the same colors.
It depends on the purpose you have in wanting a smaller file size whether it is better to reduce the resolution or increase the compression to get it. Sometimes you might do both. For example when I email digital images to clients to choose an image, I will reduce the resolution to screen resolution (say to 4" x 6" at 72 ppi) and greatly increase the compression to lower the quality and make the image less likely to be printed.
I hope that this makes it a bit easier to understand.
John
John G. Blair

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Need help with resolution problem

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Not sure what you mean by print B&W photographs on transparencies? Perhaps you print onto acetate sheets?
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[solved] Need help with resolution on HDTV being used as a monitor

This is a separate but sorta related problem to my previous post: https://bbs.archlinux.org/viewtopic.php?id=101770
I have a Sanyo HDTV and I'm using it as my computer Monitor. The desktop now shows up on the screen, but the position of the desktop is wrong. (tool bars are off screen) and the windows are really big.
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xrandr --output default --mode 1360x768_60.00
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# nvidia-xconfig: X configuration file generated by nvidia-xconfig
# nvidia-xconfig: version 1.0 (buildmeister@builder58) Thu Apr 22 20:35:23 PDT 2010
# nvidia-settings: X configuration file generated by nvidia-settings
# nvidia-settings: version 1.0 (buildd@yellow) Fri Apr 9 11:51:21 UTC 2010
Section "ServerLayout"
Identifier "Layout0"
Screen 0 "Screen0" 0 0
InputDevice "Keyboard0" "CoreKeyboard"
InputDevice "Mouse0" "CorePointer"
Option "Xinerama" "0"
EndSection
Section "Files"
EndSection
Section "InputDevice"
# generated from default
Identifier "Mouse0"
Driver "mouse"
Option "Protocol" "auto"
Option "Device" "/dev/psaux"
Option "Emulate3Buttons" "no"
Option "ZAxisMapping" "4 5"
EndSection
Section "InputDevice"
# generated from default
Identifier "Keyboard0"
Driver "kbd"
EndSection
Section "Monitor"
# HorizSync source: edid, VertRefresh source: edid
Identifier "Monitor0"
VendorName "Sanyo"
ModelName "SANYO LCD"
HorizSync 15.0 - 46.0
VertRefresh 59.0 - 61.0
Option "DPMS"
Modeline "1360x768@60" 84.50 1360 1392 1712 1744 768 783 791 807 -HSync +Vsync
EndSection
Section "Device"
Identifier "Device0"
Driver "nvidia"
VendorName "NVIDIA Corporation"
BoardName "GeForce 9500 GT"
EndSection
Section "Screen"
Identifier "Screen0"
Device "Device0"
Monitor "Monitor0"
DefaultDepth 24
SubSection "Display"
Depth 24
Modes "1360x768_60.00"
EndSubSection
EndSection
That did not work either and now I'm a bit lost on what to do to get my desktop to show up properly on the screen.
In windows 7 I had to use some weird settings to get it to work:
resolution: 1790x1012
DPI: 125%
Should I try using those settings?
Any help will be greatly appreciated.
Last edited by Meskarune (2010-08-12 06:47:38)

I'm having the same exact problem with my HDTV
Running latest NVIDIA 256.44-2, it keeps defaulting to 1024x768. Sometimes my monitor will display 1260x768 but nvidia-settings still only shows 1024x768 as the highest resolution.
Did you end up using 1360x768_60 or 1360x768@60?
Can you post your xorg.conf?
And what is the command to get your output of:
1360x768_60.00 84.75 1360 1432 1568 1776 768 771 781 798 -hsync +vsync
Here is my xorg.conf in case it helps
# nvidia-settings: X configuration file generated by nvidia-settings
# nvidia-settings: version 256.44 ([email protected]) Thu Jul 29 01:52:36 PDT 2010
Section "ServerLayout"
Identifier "Layout0"
Screen 0 "Screen0" 0 0
InputDevice "Keyboard0" "CoreKeyboard"
InputDevice "Mouse0" "CorePointer"
Option "Xinerama" "0"
EndSection
Section "Files"
RgbPath "/usr/share/X11/rgb"
ModulePath "/usr/lib/xorg/modules"
FontPath "/usr/share/fonts/misc"
FontPath "/usr/share/fonts/100dpi:unscaled"
FontPath "/usr/share/fonts/75dpi:unscaled"
FontPath "/usr/share/fonts/TTF"
EndSection
Section "Module"
Load "dbe"
Load "extmod"
Load "glx"
Load "record"
Load "xtrap"
Load "freetype"
Disable "dri"
EndSection
Section "InputDevice"
# generated from default
Identifier "Mouse0"
Driver "mouse"
Option "Protocol" "auto"
Option "Device" "/dev/psaux"
Option "Emulate3Buttons" "no"
Option "ZAxisMapping" "4 5"
EndSection
Section "InputDevice"
# generated from default
Identifier "Keyboard0"
Driver "kbd"
EndSection
Section "Monitor"
# HorizSync source: builtin, VertRefresh source: builtin
Identifier "Monitor0"
VendorName "Unknown"
ModelName "TV-0"
HorizSync 28.0 - 55.0
VertRefresh 43.0 - 72.0
Option "DPMS"
# Modeline "1360x768_60"
EndSection
Section "Device"
Identifier "Device0"
Driver "nvidia"
VendorName "NVIDIA Corporation"
BoardName "GeForce 7100 GS"
EndSection
Section "Screen"
Identifier "Screen0"
Device "Device0"
Monitor "Monitor0"
DefaultDepth 24
Option "TwinView" "0"
Option "TwinViewXineramaInfoOrder" "CRT-0"
#Option "DynamicTwinView" "false"
#Option "metamodes" "nvidia-auto-select +0+0"
SubSection "Display"
Depth 24
Modes "1600x1200" "1366x768" "1360x768" "1260x768" "1024x768" "800x600"
EndSubSection
EndSection
Edit: I was able to get my resolution to 1280x768 using the xfree86 modeline generator http://xtiming.sourceforge.net/cgi-bin/xtiming.pl ( i put in 1360 but it defaults to 1280)
Last edited by ruhtranayr (2010-09-02 21:20:17)

NEED HELP WITH RESOLUTION AND QUALITY?

hi guys
i have been making these vector type portraits in photoshop for the last couple weeks, it has all been going well until, when some one puts it up as a display picture on facebook etc the quality is not as good as when i just view the picture on my computer.
i have been starting the new in photoshop and using 800x800 pixels and the res at 72 pixels/inch, am i going wrong here some where? or is it the fact that i am using photoshop to do this task? im sure there are a lot of people that will advise me to use illustrator, which i have been thinking about doing. but i would like to know if this can be solved in photoshop first.
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P.S. i have also notice it is work in the text "faulty" area.

so let me try get this straight lol the picture on the left is on facebook and that the quality is rubbish because its on facebook?
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Look at all the apdiv's you have. Those are absolutely positioned layers. I'm assuming by your post that you are very new to Dreamweaver and HTML and CSS. I would highly recommend not using absolutely positioned layers until you have a better grasp on HTML and CSS.
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http://www.adobe.com/devnet/dreamweaver/articles/dreamweaver_custom_templates.html

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10.) Would it be better to have 8GB of RAM and an SSD, or 12GB of RAM and an HDD? Explain why.
GPU
10.) After Effects utilizes OpenGL to enhance editing performance. I will not really be using Premier Pro, so catering to the CUDA Mercury Engine is not a concern. Do high end gaming cards provide significant gains in OpenGL performance? Or do OpenGL performance gains taper off around the mid-range GPUs? (i.e. can you justify buying a high end GTX 260M graphics card for enhanced editing performance versus an "entry level" dedicated card like the 310M?)
11.) What hardware specs are most important when considering a GPU for editing performance in AE? (Memory size? # of Pixel shaders? Core speed? Shader speed?)
Thanks so much for any answers you can offer to these questions.

Please make sure that you've read through this page and what it points to.
> 1) Does the “Render Multiple Frames Simultaneously” option
enhance general editing performance (applying filters, scrubbing through
the timeline, reverting history states)? Or does it ONLY help speed up
RAM previews and final output? Does it reduce the length of RAM
previews?
It only increases rendering speed for RAM previews and rendering for final output. In After Effects CS5, it doesn't decrease the length of RAM previews. (In CS4, it does.)
1b) Is this option even necessary to enable on 64bit
systems? (As far as I understand it was used to solve a problem where
32bit systems/software would only recognize 4GB of RAM per instance of
AE).
You misunderstood. Yes, it's still relevant on 64-bit computers. Moreso, in a way. (I'd rather not spend my entire Sunday writing out detailed answers to satisfy idle curiosity, so I'm not going to give all the technical detail to that answer.)
> 1c) If I turn this option on to help with RAM previews,
would I be hindering general editing performance in any way? Or does
this option have basically zero drawbacks?
It takes a small but nonzero time for the background processes to start up when they need to be used and shut down when they're done. And as they sit waiting, they take up a little bit of memory. So, it's not exactly correct to say that there are no downsides to leaving it on. But it's close. I leave it on.
> 2) How come “Actual CPUs that will be used” will read 0 even
if the sum total of RAM assigned to the CPUs plus the RAM reserved for
other applications is less than the total available system RAM (on a
64bit system)? For example, I currently have 4GB RAM and 2 installed
CPUs. I have 1.5GB reserved for other programs and when I set 0.75GB per
CPU both CPUs are used. However when I set 1GB per CPU then 0 CPUs are
used, even though the total RAM adds up to only 3.5GB.
4GB - 1.5GB for other software leaves 2.5 GB for After Effects.
If you have 1GB assigned per background CPU, then the foreground takes 1.2x that = 1.2GB. That leaves 1.3GB for background processes, which is enough for one background process. There's no point in starting only one background process to do rendering, so it doesn't bother. (Note: When background processes are rendering, the foreground process isn't rendering.)
> 3.) Considering the fact that I am more concerned with
smooth performance while editing rather than final output speeds, would
it be better to get a dual core i5 clocked around 2.5 or a quad core i7
clocked around 1.8?
Get the quad-core. That gives you a greater total number of cycles. And After Effects works very well with mutliple processors, even beyond Render Multiple Frames Simultaneously multiprocessing. An entirely unrelated sort of multiprocessing (multithreading) spreads work out to multiple processors.
> 6.) Should the quantity of RAM that I get (8GB vs 12GB) be based on the number of cores in my CPU? If
so, how should I be calculating optimal RAM based on # of cores. Should
I also be counting threads, or just actual physical cores?
The optimum amount is the amount that you can cram into the computer. I'm not kidding. Spend your budget on RAM until you have 4GB installed per processor (and I'm counting the virtual processors due to hyperthreading). If you have a quad-core, that's 8 CPUs with hyperthreading, so the optimum amount of RAM installed is 32GB. You can work with less, but you did ask about optimum. For HD work (i.e., 1920 pixels across), you're OK with more like 3GB installed per CPU. That's what I have at home: 24GB in a quad-core. You're going to assign 2/3 or so of the RAM to After Effects, so 3GB installed per CPU is 2GB per core for HD work in After Effects.
> 10.) Would it be better to have 8GB of RAM and an SSD, or 12GB of RAM and an HDD? Explain why.
12GB of RAM. Because After Effects likes RAM. (If you're thinking of deliberatly using virtual memory to swap memory to the hard disk, don't. That's a performance killer.)
> 10.) After Effects utilizes OpenGL to enhance editing performance.
Not really. If you're on a limited budget, don't even think about the GPU until you've already got the most RAM, the fastest CPUs, the largest number of CPUs, two fast hard disks, and a couple of good monitors. Then, and only then, should you even consider getting soemthing beyond a non-stock graphics card. Yes, OpenGL can be used to accelerate some things, but that's only for the low-fidelity preview renderer. (Pardon the bluntness, but I want to make sure that you heed this.)

I need help!!!! My iTunes has gone wild Itunes 10.5.3 starts, skips,fast forward and open by itself randomly?

One day out of the blue, Itunes began to open by itself interrupting pandora and playing at the same time with other videos and/or music that is playing on my computer. I have called The guys from mac support and they re started my computer, deleted Itunes helper, widgets are off, checked on activity monitor. It works find for couple of hours and then Itunes open automatically, even after I force quit i tunes. I change the headsets with no resolution. I even loaded up again Lion and nothing. Yesterday, after I sync my iphone 4 and I was listening to a video, Itunes began to do the the same as on my MACBOOK PRO 2011. I rebooted the phone and it appears to be working find. What is this bug that Itunes 10.5 seems to have? I have tried to delete Itunes form application folder and is not deleting it. Also I redownloaded Itunes again and it worked find for a day or 2 and then the problem persisted. th e CDs that came with the laptop to reset to original donot work because I loaded up Lion. Please I need help? thanks

One day out of the blue, Itunes began to open by itself interrupting pandora and playing at the same time with other videos and/or music that is playing on my computer. I have called The guys from mac support and they re started my computer, deleted Itunes helper, widgets are off, checked on activity monitor. It works find for couple of hours and then Itunes open automatically, even after I force quit i tunes. I change the headsets with no resolution. I even loaded up again Lion and nothing. Yesterday, after I sync my iphone 4 and I was listening to a video, Itunes began to do the the same as on my MACBOOK PRO 2011. I rebooted the phone and it appears to be working find. What is this bug that Itunes 10.5 seems to have? I have tried to delete Itunes form application folder and is not deleting it. Also I redownloaded Itunes again and it worked find for a day or 2 and then the problem persisted. th e CDs that came with the laptop to reset to original donot work because I loaded up Lion. Please I need help? thanks

Need help with Page Layout and Background Scaling

hello, everyone.
I am in the process of designing a new website for myself,
and while I was researching nicely designed pages to use as
inspiration, I stumbled upon this site:
http://www.jeffsarmiento.com/
obviously, the design is very impressive, but it also
incorporates a lot of web mechanics that I have been trying to
figure out, so I will use this page as an example.
one thing I need help with is backgrounds. as you can see in
the posted website, the creator used a seamlessly tiled paper
texture to display the bulk of his content on. also make not of the
pattern that is located to the left of the paper texture. how do I
create seamless backgrounds like this that will scale to fit any
amount of content or any resolution? I can't imagine that the guy
that made that site created a new size background every time he
made an update, so there has to be an easier way.
the second thing that I am having trouble with is general
site layout. I have read that most sites used series of invisible
tables to organize there content, but when I open the source of
this page in dreamweaver, he was using something different. div
tags? should I be using these? who do I use them? are there any
general layout tips that someone could pass on to me? perhaps a
link to a good tutorial?
please help me. i am very confused.
thanks so much.

IMO not a good site to emulate. To wit:
Top background image:
http://www.jeffsarmiento.com/images/bg-top.jpg;
745px
x 350px 137K
Main background image:
http://www.jeffsarmiento.com/images/bg-tile.jpg;
745px x 950px 130K
Total page size: 454K (Check here:
www.websiteoptimization.com)
Website usability experts routinely recommend a maximum page
size of ~80K
Check out the We We Scale @ www.FutureNowInc.com/wewe/ where
they suggest,
"You speak about yourself approximately 0,003 times as often
as you speak
about your customers. Might that have an impact on your
effectiveness?"
That is 100% consistent with the #1 Web Design mistake:
"Believing people
care about you and your web site." or to phrase more
expansively, "Our site
tries to tell you how wonderful we are as a company, but not
how we're going
to solve your problems."
www.sitepoint.com has some excellent books on making a
website actually
attractive and usable at the same time.
Walt
"beWILLdered_" <[email protected]> wrote in
message
news:[email protected]...
> hello, everyone.
> I am in the process of designing a new website for
myself, and while I was
> researching nicely designed pages to use as inspiration,
I stumbled upon
> this
> site:
>
http://www.jeffsarmiento.com/
> obviously, the design is very impressive, but it also
incorporates a lot
> of
> web mechanics that I have been trying to figure out, so
I will use this
> page as
> an example.
> one thing I need help with is backgrounds. as you can
see in the posted
> website, the creator used a seamlessly tiled paper
texture to display the
> bulk
> of his content on. also make not of the pattern that is
located to the
> left of
> the paper texture. how do I create seamless backgrounds
like this that
> will
> scale to fit any amount of content or any resolution? I
can't imagine that
> the
> guy that made that site created a new size background
every time he made
> an
> update, so there has to be an easier way.
> the second thing that I am having trouble with is
general site layout. I
> have
> read that most sites used series of invisible tables to
organize there
> content,
> but when I open the source of this page in dreamweaver,
he was using
> something
> different. div tags? should I be using these? who do I
use them? are there
> any
> general layout tips that someone could pass on to me?
perhaps a link to a
> good
> tutorial?
> please help me. i am very confused.
>
> thanks so much.
>

Need help hooking up Maxent 42" Plasma to mac mini

i have a newly acquired maxent 42" plasma product number mx42xm11 i called their rep and he said it wouldnt work but i have read a couple forums where people have gotten other maxent monitors to work i was wondering if someone could help me set this one up.

I searched and found this:
Input/Output connections
2 x Composite video input (RCA phono), 1 x DVI-HDCP (24 pin digital DVI), 2 x S-Video input (4 pin mini-DIN), 2 x HD component input (RCA phono x 3), 1 x VGA input (15 pin HD D-Sub (HD-15)), 6 x Audio line-in (RCA phono x 2), 1 x Subwoofer output (RCA phono), 1 x Audio line-out (RCA phono x 2), 1 x VGA output (15 pin HD D-Sub (HD-15)), 1 x Serial (9 pin D-Sub)
It looks as simple as connecting a standard VGA cable from the Mini to the VGA port. It also listed the resolution as 1024x768, which is a standard 4:3 resolution.
You could also try a DVI cable as long as your DVI input looked similar to tha back of your Mini.
Where would you need help?
Greg

Need Help: BBZ10 Stuck on Usb Moniter Screen Unable to Boot / Start

Hi,
I recently purchased a Balckberry Z10, while trying to transfer my data from my existing blackberry I accidently reset my device to factory setting. now it is stuck on the usb moniter screen.
I have tried reloading the phone using Link but it keeps on showing me a message: Unable to reload due to error: No Update Available.
I am using a Mac.
Need Help!

So this is the problem and the resolution is this.. But unfortunately it is not working because I keep on getting this message that no update available.

Need help with image

I sure could use a buddy who has Skype or something who I can shoot questions like this to. My designer wants a retainer of $3,000 but I can do most of my own stuff in Photoshop. Sometimes I get stumped though, and just need a 30 second tutorial. So I am coming here.
I basically need to figure out how to change this image:
But along with that comes figuring out how to change it from a square image to one with a rounded top and bottom-right corner.   Also a 2 pixel shadow going up the right side and along the bottom. I can manually draw in those two pixels easily enough. But the corners look terrible when I try to manually do it.
Is there an easier way? I have been cropping the new image to the proper size, and then drawing in the two pixel fade on the side and bottom. Then trying to pixel by pixel create the rounded edges.
Its not looking natural.
Before you say "Its a drop shadow!" please remember, in order for me to copy that exact drop shadow, I would need to know all their settings, colors, pixel widths, etc. All I have is a flat, finished image, so I have none of that information. Plus, I dont know how to do a drop shadow on a curved corner, which deletes the original squared corner on the image. :-\
If you give instructions, please be as clear and detailed as possible. This is why I prefer a chat medium for this type of thing.
Thanks much to anyone who can assist.
PB

Here is a TUTORIAL on doing rounded corners. Hope it helps.   Could not get insert link to work so try this. http://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&ved=0CDYQFjAA&url=http%3A%2 F%2Fmatthom.com%2Farchive%2F2004%2F09%2F10%2Ffast-rounded-corners-in-photoshop&ei=q2l8T_T8 LcKZiQKQnt3uDQ&usg=AFQjCNEsGI12k8Ck-GiuIWMUOLC6m3xoYw
Don't know what magnification you are using on this image, but the fact you have pixels shows it will be difficult to make a nice rounded edge.
You might need a higher resolution image, or at least convert from 8 bits to 16 bits to do edits, then change back to 8 RGB to save. Beware not all toolsand saves will work in 16 bit.

I need help deleteing documents from Abode ReaderIX

Can someone please tell me how to delete documents - everytime I highlight a document to be deleted the delete never selects. I can not delete documents -- I need help please someone anyone help!!!!!!!!!!!!!

Hi,
Welcome to Adobe Forums.
I didn't quite understood your issue.
Are you trying to delete the content in PDF file?
You cannot edit the content of the PDF file using Adobe Reader.
Or are you trying to delete the document(PDF) file?
You should be able to delete the PDF file like any other file on your computer.
Please explain your problem in detail, this will help me to find a resolution quickly.
~ Aditya Kalania

Need help undersatnding resolution.

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