KVM and image quality

Anyone know whether a KVM switch will cause image degradation?
if so, where does the degradation come from?
ray

I've got a Belkin KVM that has 2 USB ports, 1 SVGA port, and both an audio in and audio output port.
It works great. But, there are very noticeable wavy lines on the screen if you look at a flat gray screen (like during startup).
You can see the lines if you look closely while at the desktop. But, it is much harder to see then. It is very noticeable during the startup process though.
I believe this is due to signal degradation from the longer cable.
It's not bad enough to annoy me. But, it does stress the eyes a bit (like a very low refresh rate does).
Overall, I don't notice it visually. But, I feel it in my eyes.

Similar Messages

IPhoto is changing resolution and image quality

I am currently and for the first time using iPhoto 6 to produce a book - a feature within the application. I have edited my images in Photoshop, some have not needed to be so they have simply been saved as either high-res JPGS or TIFFS. On importing them into iPhoto selected images are downsizing and stating that they are not big enough to print - this I know is not true as they are adequatley large enough for printing to A0 minimum at 300 dpi. There are also a select few that are changing in image quality - the colours are looking either bleached out or over-exposed and they have lost their original quality. When opening the exact files in Photoshop they are correctly exposed, perfect colours, sizes etc. If I am to try and 'retouch' them within iPhoto I can resume some of their quality but it seems through the transition into importing inot the application they are being corrupted.
Can anyone assist me as its driving me mad!!!
Thanks

What is the color space of the photos in photoshop?
In iPhoto Preferences, Advanced, do you have it set to add ColorSync Profile?
BTW, the 72 ppi (pixels per inch) is irrelevant. iPhoto defaults to reporting 72 ppi because that is a typical screen resolution. What's important is the total pixel dimensions of the image, and whether that size gives you an adequate dpi (dots per inch) when printed at the designated print size. So, while the image looks great on-screen in photoshop, that doesn't mean that it will be adequate for printing in a book. But you are right - you shouldn't see a significant shift in color when importing into iPhoto.
Regards.

Resaving pdfs and image quality

I have clients submit ads as pdfs but sometimes I need to recreate the pdf because the client forgot to include all printer marks, or I need to convert a spot to process, or whatever. The way I do it is to create a new InDesign CS3 file, place the pdf file into it, and export to pdf using my preset. My question is does importing a pdf file into ID and then exporting back into pdf affect image quality, even slightly assuming the compression settings are the same in the export to pdf' dialog box - mainly all compression set to none?
Thanks.
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New Bie:
Many of the adjustments you want to make can be done to the PDF within Acrobat if you have the Acrobat Professional version.
Such as: convert colors, add printers marks and change Page Box sizes.
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IWeb and image quality of Photoshop jpegs

i am constructing a website consisting of my photography... with color shots i am noticing a dramatic 'flattening' of the vivid nature of my shots in iWeb as opposed to how they appear on photoshop... i believe i have followed the photoshop process properly... so there would be an image now at 72 ppi about 6 inches by four inches as a jpeg looking pretty vivid in photoshop on my screen. when i bring this over, via iPhoto, into iWeb image quality is lost... of note as well though is that this image does not look to hot in iPhoto as well... not sure then what forum this question belongs in... any quidance at all is appreciated.

hi Tomas... thanks for your response... i did drag a photo from my finder directly into iweb and within the iweb program it looked great but as soon as i published i lost saturation... odd... so i can avoid iphoto now, which is great, but something is happening in the process still... i have turned off the iweb image optimization and played with tiffs and jpegs within photoshop to try to get the final image to come out as intended... if you have any other suggestion please let me know... thanks again for your post... i will check out your link.

Editing and image quality in Lightroom

Hello all,
I am a new Lightroom user (Lightroom 5) and I've watched several tutorial videos and I've had a lot of fun playing around with the program. I've noticed that Lightroom is said to be "non-destructive" when it comes to editing. Apparently, you can do all the editing you want to an image (i.e. adjusting exposure, cropping, etc.) and there is no loss of image quality as you edit. Is this correct?
I would hate to think that my tinkering around with the editing tools results in loss of image quality each time I change something. ("Hmm, I like that exposure. Now let me adjust shadows. No....that doesn't look right when I do that. I'll just change the exposure a bit more...."! I intend to put photos onto an image hosting site and present them, so I want the quality to be the best it can be!
I appreciate any help anyone can offer.
Cheers,
Tom

I am a new Lightroom user (Lightroom 5) and I've watched several tutorial videos and I've had a lot of fun playing around with the program. I've noticed that Lightroom is said to be "non-destructive" when it comes to editing. Apparently, you can do all the editing you want to an image (i.e. adjusting exposure, cropping, etc.) and there is no loss of image quality as you edit. Is this correct?
I know of no image editing software that causes loss of image quality when you make an edit. Editing steps simply cause a change to the image based on the edit you perform, not a loss of quality. This is true of Lightroom and every other image editor that I know of.
If you choose to save (or in Lightroom do an export) as a JPG, then there is a loss of image quality each time you perform a save as a JPG. If you need to have a JPG of your edited photo for some reason, then this loss of image quality is unavoidable, but in most cases you won't even notice. Thus, in Lightroom, creating a JPG from the edited photo is the LAST step in the process, thereby minimizing the image quality loss.

Screen protectors and image quality

I have a screen protector on my 3G and thinking about getting one for my iPhone 4. How you guys liking them so far? I am worried about it degrading the image quality of the new high res screen.
Tom

I've had every iPhone since it came out & I've never used a screen protector. I've never once ever had even the slightest tiny little scratch. That's not to say though that the screen on the ip4 will have the same luck bc I know it's not the same plus, in addition, I know the back is glass also & it's exposed due to the design of the bumper, which is my personal choice at this time.
I do wonder what the future will hold in reference to the other companies design for the new phone like Ncase, Griffith, Frogz, etc.??? They may come up with the clear plastic type snap on cases on different colors or variations of smoke colored to clear plastic. This way we can still see the phone, especially if you prefer the white if they ever start selling them, & it will be protected at the same time. Only problem is with those cases is u have to keep the touch pad exposed for use & you would still need a screen protector if this model does indeed scratch. Better than nothing though. I still wonder if it will scratch. I am HORRIBLE at putting on those screen protectors. No matter what I do I get bubbles etc. Used a credit card & started one end very slowly & it comes out looking ********. I KNOW that I NEVER had ANY scratched on my ip3Gs & the glass is the same as the iPad.

Flash Export and Image Quality

When I place Illustrator CSx eps files in my keynote presentations and then export to flash it really chews up the images. You would think vector images would fair the best but the lines are very jagged making the presentation look very ugly.
Does anyone have any tips on improving this? I've tried PNG,jpg, etc.. the images I'm using are line art (e.g. diagrams) but it doesn't seem to help using other file formats.
I don't understand why there is no compression control available for flash export....
Mark

edit your image in photoshop and experiment with various settings/size. there's no magic high quality small file size setting.
it's a trade-off. the higher the quality and the greater the image dimensions, the greater the file size. you have to decide where those are acceptable.

Printing and Image Quality

Hello,
I was wondering if there is a place that I could find out how to use the printing functionality of the Java API other than the tutorials here on sun. We've got some printable objects in our program, but when we try to take the screenshots and print them out, the quality is very shoddy. What I want to be able to do is to get almost exactly what the image on the screen is and be able to print it with as good of quality as is on the computer screen. Are there any good tutorials out there, (or example good or bits of advice) that might help me do this? Thank you very much, and happy new year!

While that is quite useful, the problem is that I need to resize the component I'm trying to fit, and in some cases edit the image before printing, so that the image gets somewhat distorted. Right now we've just been using getImageableX() and getImageableWidth() and those methods to draw the component onto the thing we are going to print. Is there a better way to deal with resizing?

DPI and image quality in programs like Windows Photo Viewer

I'll keep this as short as possible. About 6 years ago I bought a Panasonic Lumix DMC-F28 digital camera (not DSLR). It claims 10 MP. After that my daughter bought a Canon Rebel (don;t know the model) which has 12 MP. I would compare her pics with mine by looking at them in Windows Photo Viewer. Hers always looked a lot fuzzier than mine. Especially true if you zoomed in. And I gave her a hard time, saying she had bought a knock off.
I just purcahsed a Rebel T5i with the usual kit 18/55 lens. I took a picture with both the new and the old camera. Guess what? Given the same subject with the same lighting, the Panasonic still produces much clearer pictures in Windows Photo Viewer than the Canon. The only difference I see is that the Canon states the DPI as 72 and the Panasonic as 180. OF course, the Canon image has a lot more pixels.
I know that DPI matters only when a picture is printed. But is it possible that the DPI property in the image file is telling Windows Photo Viewer how to present the image? I hope so. Otherwise I lucked out with my Panasonic and got the best camera in the world, or a Canon is not so great after all.
Do I need to apologize to my daughter? See attached images.
These images are opened in MS Paint and cropped to bring out the eye and hair detail.
Panasonic Image
Canon Image

You comparison method is seriously flawed. For 1 image to be at 72 DPI (a software supplied setting) & the other to be at 180 DPI it means that one image has been enlarged (180 divided by 72) 2.5 times more than the other to view it on screen. Zoom in on the good image until it's 2.5 times larger & see how it looks.
Next thing you need to know is that camera technique becomes more important as pixel count increases. an 18 Mpixel image will have an 80% increase in softness over the 10 Mpixel camera from identical camera shake. To make any accurate form of comparison you will need to eleminate the possibility of introducing camera shake into the test. You will also need very similar lighting & the subject must also be stationary for all test shots. (IE that eye (or the person it's attached to) may have moved during one shot but not the othern
"A skill is developed through constant practice with a passion to improve, not bought."

RotationZ and image quality

Why text or graphics inside a MovieClip or a Sprite deteriorate their video aspect when I act on their rotationZ properties?
How can I avoid this effect?
Thank you very much for anyone who kindly will answer me.
Best regards
Gio

hi
whenever you use 3D rotation (x, y or z), flash converts the rotating object to a bitmap (even if the original is made of vectors) so unfortunately you will always get a drop in quality

Low File Size/Great Image Quality: H.264, AAC

1. I created a slideshow in iPhoto, exported it to a QT movie file. The properties of it is as follows:
Exibit A:
Dimensions: 720x480
Format: MPEG-4 Video, AAC, Stereo, 44.100kHz
FPS: 30
Data Rate: 7277.87 kbits/sec
Channel Count: 2
Duration: 02'46
Size: 143.58MB
2. I pulled a QT Movie file from the web with the following properties:
Exibit B:
Dimensions: 480x360
Format: AAC, H.264, Stereo (LR), 48.000kHz
FPS: 28.79
Channel Count: 2
Duration: 01'22
Data Rate: 868.14 kbits/sec
Size: 8.5MB
3. I tried to see if I could compress my movie and keep the quality as comparible to Exibit B. Here's what I ended up with:
Exibit C:
Dimensions: 720x480
Format: AAC, H.264, Stereo (LR), 44.100kHz
FPS: 30
Data Rate: 4826.73 kbits/sec
Channel Count: 2
Duration: 02'46
Size: 95.22MB
4. I tried again. This time creating the same dimension as Exibit B. Here what I got:
Exibit D:
Dimensions: 480x360
Format: AAC, H.264, Stereo (LR), 44.100 kHz
FPS: 30
Data Rate: 2577.17 kbits/sec
Channel Count: 2
Duration: 02'46
Size: 51MB
How can I create a very low size and image quality as Exibit B?
I have QTPro. Do I need something else?
Thanks.

Update:
Well playing all exibits on the Windows workstation worked just fine after the update. I now has QT7.
Next...I've exported Exibit A down to 8MB (Exitbit F)by recommendations from Capt. QTKirk. Here are the properties:
Exibit F:
Format: AAC, Stereo (LR), 32.000kHz, H.264, 720x480, Millions
FPS: 15
Data Size: 8.5MB
Data Rate: 429.79kbits/sec
Overall Quality:
Video: Fair at 720x480; much better at 486x324; overall choppy transitions as well
Audio: Fair -close to mono.
Anyone else have any suggestions?
How and what are others using to get the audio/video quality as crisp and sharp as what's shown in the QT Movie Trailer site?

Radeon 6850 poor image quality via hdmi

Hi have a connected via HDMI cable to a Sony Bravia 32in 100hz LCD TV and the image quality is poor Windows appears really pixalated, have used this TV with on board graphics and image quality is great any ideas?

Still you should be able to bump the Res up with DVI to DVI if it has that port. VGA PC to DVI TV will work 1080P. Some manufacturer though do not allow DVI to do 1080p I read somewhere. My LG 50" TV has every port I could think of DVI VGA RCA COAX HDMI probably more that I dont even know. It does 1080p with DVI but HDMI is easier with the sound.

Iphoto 2 reduces image quality on iPad Air

I seems there is a significant reduction in image quality when editing images in iPhoto 2 (iOS7) on an iPad Air.
Not sure which component is the real problem ... and no, I'm not talking about file size (I know they are reduced) - I talk about dpi
So here's my old setup:
Nikon 5000 (image quality fine), iPad 3, Connection Kit for SD card, iPhoto on iOS 6
... with that setup I was able to save my edited pictures back to camera roll and the still had 300 dpi
My current setup:
Nikon 5000 (image quality fine), iPad Air, New Connection Kit for SD card (lightning), iPhoto 2.0 on iOS 7
... now my adited images only save back to the camera roll with 72 dpi!
As my DSLR and the SD cards are the same than before it seems that either
- Connection Kit
- iPhoto 2
- iOS7
- iPad Air
is the trouble maker!
While iPhoto seems the obvious source for the problem I had an experience that makes me think it could also be the iPad Air:
After creating a video with iVideo (with material from the iPhone 5) I saved this bakc to the camera roll and it was resized (resulting in cuts on the left and right edges) on the iPad.
Copying the same Video to iVideo via AirDrop on my iPhone 5 and savicg it to camera roll there resulted in a correct non-resized version.
So while I can easily live with that workaround for Video the reduction in images from 300 dpi to 72 dpi is signifikant and a real problem.
Anybody experiencing the same, any hints what I can do different to avoid thar reduction?

Just found an interesting article that may be the solution of my problem:
http://www.ilounge.com/index.php/articles/comments/icloud-photo-stream-and-image -quality/
As I brought together pictures from my DSLR and the iPhone I think I used the Shared PhotoStream folder for editing them in iPhoto 2. In the past I usually worked on the pictures separately (and directly form the Camera Roll) as I didn't mix so much DSLR and iPhone use.
That should explain it and I have to remember to edit directly in the camera roll and the next time.
So it's not a big deal ... I still have all the originals and will save them somewere in my Dropbox if I need them in higher resolution. At least I know I have to change my re-work behavior in the future.

Poor webcam image quality (HP Touchsmart Notebook

I recieved a HP touchsmart Notebook as a Christmas gift and the image quality is horrible! Even in a well lit environment, the image is still not clear. I have adjusted the settings to try to improve the image quality, but there is still not much of a difference in the way the images appear. I have also tried to reinstall the Cyberlink YouCam application but the image quality is still the same (poor). I like some features on my laptop, yet I'm still getting aquainted with it. However, the image quality along with a few other technical issues such as (freezes), has negatively impacted how I view this product. I hope that there is something that could be done! Please help!

Hi @mzdymond01
Thank You for the inquiry, I will do my best to assist you!
I understand you received this notebook at Christmas and image quality of the WebCam is poor.
Have you done all your Windows updates?
Have you tried Using automated troubleshooting (Windows 8)?
Have you ran the HP Support Assistant to assist with HP updates?
Here is a link to Webcam Troubleshooting (Windows 8) that will guide you through some steps.
If the issue should remain I suggest contacting HP support for further assistance. As this is a new product you want to ensure everything is performing as it should.
Please call our technical support at 800 474 6836. If you live outside the US/Canada Region, please click the link below to get a support number for your region.
World Wide Phone Support
Best of Luck!
Sparkles1
I work on behalf of HP
Please click “Accept as Solution ” if you feel my post solved your issue, it will help others find the solution.
Click the “Kudos, Thumbs Up" on the bottom right to say “Thanks” for helping!

Photobook image quality

I once had read here that there was a hack that could be done in iPhoto that would submit your Photobook in a way that resulted in better resolution and image quality once it was printed, that the default settings resulted in "ordinary" image quality, but there was a hack or something to specify printing at the highest quality possible. Does anyone recall such a thing? I'd like to order a Photobook but am worried about the quality of the photos once it is printed. Thanks.

I remember one iPhoto 6 hack, perhaps it's the one you are thinking of. Read Old Toad's post here: http://discussions.apple.com/thread.jspa?messageID=1250044 regards iPhoto 5) and a longer discussion re v6 here: http://discussions.apple.com/thread.jspa?messageID=2789704
I believe the conclusion to the second thread is that with iPhoto 6 the resolution is already set to 300 dpi. However, the low resolution warning only kicks in at below 180 dpi. So as long as your photos are 300 dpi or better (at the size at which they will be printed in the book) then you are getting the best possible resolution. Just don't rely on that warning symbol - check the photos yourself or hack the preference value for +BookWarningImage DPI+
BTW, I found that by searching the iPhoto 6 forum category for the terms "book warning resolution hack", limited to user "Old Toad" and date range "All".
Regards.

KVM and image quality

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