Messages In This Digest (12 Messages)
- 1a.
- Re: printer question From: Denver Dan
- 2a.
- Re: Scanner Resolution question From: Denver Dan
- 2b.
- Re: Scanner Resolution question From: Tod Hopkins
- 2c.
- Re: Scanner Resolution question From: Denver Dan
- 2d.
- Re: Scanner Resolution question From: George Barker
- 3a.
- .json files From: Lynne
- 3b.
- Re: .json files From: Jon Kreisler
- 4a.
- Re: I need a new scanner From: Denver Dan
- 4b.
- Re: I need a new scanner From: Tod Hopkins
- 5a.
- Browsers sluggish after long time From: DaveC
- 5b.
- Re: Browsers sluggish after long time From: Bill B.
- 6.
- Canon PowerShot S95 Question From: pat412255
Messages
- 1a.
-
Re: printer question
Posted by: "Denver Dan" denver.dan@verizon.net denverdan22180
Sat Feb 11, 2012 7:12 am (PST)
Howdy.
Louise, you might try a "power reset" of your printer.
No guarantees but worth a try.
You should also search a HP support web site for more info on this.
Try:
Perform a power reset
Follow these steps in the order presented to resolve the issue.
1. Press the Power button to turn on the product.
2. Disconnect the power cord from the back of the product.
3. Unplug the power cord from the wall outlet, and then wait 30
seconds.
4. Plug the power cord back into the wall outlet.
5. Reconnect the power cord to the back of the product.
6. Press the Power button to turn on the product.
Denver Dan
On Thu, 09 Feb 2012 23:25:55 -0500, Louise Stewart wrote:
> I have an HP Officejet 6000. I just replaced all of my cartridges
> with HP compatible ones. I've used these in the past instead ofo HP
> one and they did fine. But this time, the printer is telling me I
> don't have any ink in the magenta one and when I print, I get a green
> print and not black. I went online to try to find some place where I
> could find out about this, but so far, haven't found how to solve
> this. Ideas?
>
> Louise
>
- 2a.
-
Re: Scanner Resolution question
Posted by: "Denver Dan" denver.dan@verizon.net denverdan22180
Sat Feb 11, 2012 7:26 am (PST)
Howdy.
George, read this web document for some excellent information on
scanning and resolution.
<http://www.scantips.com/chap3c. >html
The basic info on this site is accurate even though it uses scanning
resolutions for older model scanners (optical resolutions and density
ratings for newer scanners have really been going up).
When looking a scanner specifications you compare the Optical
resolution and not the Interpolated resolution. Interpolated means a
mathematical formula in software that adds pixels to a scan - I
sometimes call it the marketing department talking.
The smaller number for the optical resolution specification is the
actual hardware capable resolution built into a scanner.
So the CanoScan 5600F's 4800 optical res is the actual hardware
resolution.
You don't need more than 300 dpi resolution to scan a photograph IF you
will be printing the photo at the same dimensions of the original.
Extra resolution is good for enlarging and for doing some editing
chores.
You should look also at the "Density" rating of the scanner. Density
is a term that has to do with the scanner's ability to detect subtle
differences in dark or muddy areas of an image but in particular for
transparency or 35mm slides. The higher the Density rating the better
the scanner is a differentiating dark and muddy elements in an image.
I have a CanoScan 8800F which I've been very pleased with. It's the
first scanner I ever had where ALL of the scanner's buttons actually
worked on a Macintosh. In addition, when Snow Leopard came out, Canon
did a fast job of having a compatible scanner drive available in about
a week and it also works with Lion.
Remember also that while flatbed scanners have gotten much better at
scanning 35mm slides, to do a really good job with 35mm work a
dedicated slide scanner will often produce better results - it has to
do with dedicated slide scanners having a MUCH higher scan resolution
aimed at the 35mm size with then intent of enlarging that enough for
print work.
Denver Dan
On Sat, 11 Feb 2012 17:31:20 +1100, George Barker wrote:
> I thought I had a fair to middling handle on this stuff, but I'm
> puzzled by the following Canon offerings on their scanners.
>
> CanoScan LiDE 700F (Mid Level)
> High quality scanning up to 9600 X 9600 dpi high resolution and
> 48-bit superior gradation
>
> CanoScan 5600F (High Range)
> High quality scanning up to 4800 x 9600 dpi high resolution and
> 48-bit superior gradation
>
> Can someone tell me the difference between 9600 X 9600 dpi and 4800 x
> 9600 dpi; and why the 9600 X 9600 dpi resolution (which I'm assuming
> is the superior quality?) is on the Mid Level scanner and not the
> High Level.
>
> thanks
> George
- 2b.
-
Re: Scanner Resolution question
Posted by: "Tod Hopkins" hoplist@hillmanncarr.com todhop
Sat Feb 11, 2012 11:19 am (PST)
Dan's reply is excellent. I'll add a few notes.
First, emphasis on "optical resolution." This number is sometimes hidden, but make sure it is the optical resolution you are looking at. You should be concerned with the density or "bit depth" that you use for scanning, but 48-bit is pretty standard now and far beyond what I can imagine realistically using (it's way beyond visual acuity). Optical resolution is not always the same in both dimensions, so look at both numbers.
While Dan is correct that most people's needs top out at around 300dpi (or 300x300), I would not purchase a scanner that had an optical resolution less than 4800x4800 at this point. It's just not cost effective. At 4800dpi you are effectively magnifying details beyond unaided vision, BUT this may be very important to you! For artists and anyone interested in special effects work, such as scanning natural textures like leaves or feathers or fabric, you will want extreme resolution.
And while 300dpi is great for most casual work, it's no where near enough for professional quality work. For instance, in my HD video work, we request all images at 3000 pixels on the shortest dimension. For an old 3x5 snapshot, that's a minimum "dpi" of 1000dpi (actually a 1200dpi setting). For a postage stamp, we would require 4800dpi minimum.
I highly recommend purchasing a scanner that already has "transparency" adapters, including 35mm slides, if there is any possibility you will do such work. You cannot properly scan transparencies (negatives and slides for instace) without a proper adapter. If you are going to scan items this small, you will need at LEAST 4800dpi. Dedicated slide scanners are better, and generally work at 12,000dpi, but I've scanned transparencies for years with a flatbed and adapter and it's works fine and is very convenient and flexible.
And finally SPEED MATTERS! Look at the reviews. The biggest differentiator these days is scanning speed, especially at very high resolution. It's tough to be accurate AND fast, and flatbed scanning can be deadly slow if you've got a lot of work to do.
Consider the bundled software. Look at reviews. Unless, of course, you already own the software you plan to use.
And if you got a ton of sheet scanning to do (such as OCR) you really want a sheetfed scanner, but that's a different beast all together.
Cheers,
tod
On Feb 11, 2012, at 1:31 AM, George Barker wrote:
> I thought I had a fair to middling handle on this stuff, but I'm
> puzzled by the following Canon offerings on their scanners.
>
> CanoScan LiDE 700F (Mid Level)
> High quality scanning up to 9600 X 9600 dpi high resolution and
> 48-bit superior gradation
>
> CanoScan 5600F (High Range)
> High quality scanning up to 4800 x 9600 dpi high resolution and
> 48-bit superior gradation
>
> Can someone tell me the difference between 9600 X 9600 dpi and 4800 x
> 9600 dpi; and why the 9600 X 9600 dpi resolution (which I'm assuming
> is the superior quality?) is on the Mid Level scanner and not the
> High Level.
>
> thanks
> George
> --
> --------------------- --------- --------- --------- --------- -
> George Barker
> --------------------- --------- --------- --------- --------- -
>
Tod Hopkins
Hillmann & Carr Inc.
todhopkins@hillmanncarr.com
[Non-text portions of this message have been removed]
- 2c.
-
Re: Scanner Resolution question
Posted by: "Denver Dan" denver.dan@verizon.net denverdan22180
Sat Feb 11, 2012 11:49 am (PST)
Howdy.
I'll add one more thing about scanning software.
A great feature to have is called "Descreen."
Many scanning software programs now have Descreen ability but not all
do.
Descreen is a feature used when scanning something that has been
printed on an off set press.
Off set press creates some called a "rosette" of dots. When you scan
an image from a magazine, or newspaper, these rosette dot patters
create what is called a "moire" pattern (like silk moire) in the
digital scan. It's a little bit like that irritating pattern you
sometimes see on television when somebody is wearing polka dots.
Descreen can reduce or eliminate moire. Turn it off when scanning a
photograph (different technology involved).
Denver Dan
On Sat, 11 Feb 2012 14:19:44 -0500, Tod Hopkins wrote:
> First, emphasis on "optical resolution." This number is sometimes
> hidden, but make sure it is the optical resolution you are looking
> at. You should be concerned with the density or "bit depth" that you
> use for scanning, but 48-bit is pretty standard now and far beyond
> what I can imagine realistically using (it's way beyond visual
> acuity). Optical resolution is not always the same in both
> dimensions, so look at both numbers.
>
> While Dan is correct that most people's needs top out at around
> 300dpi (or 300x300), I would not purchase a scanner that had an
> optical resolution less than 4800x4800 at this point. It's just not
> cost effective. At 4800dpi you are effectively magnifying details
> beyond unaided vision, BUT this may be very important to you! For
> artists and anyone interested in special effects work, such as
> scanning natural textures like leaves or feathers or fabric, you will
> want extreme resolution.
>
> And while 300dpi is great for most casual work, it's no where near
> enough for professional quality work. For instance, in my HD video
> work, we request all images at 3000 pixels on the shortest
> dimension. For an old 3x5 snapshot, that's a minimum "dpi" of
> 1000dpi (actually a 1200dpi setting). For a postage stamp, we would
> require 4800dpi minimum.
>
> I highly recommend purchasing a scanner that already has
> "transparency" adapters, including 35mm slides, if there is any
> possibility you will do such work. You cannot properly scan
> transparencies (negatives and slides for instace) without a proper
> adapter. If you are going to scan items this small, you will need
> at LEAST 4800dpi. Dedicated slide scanners are better, and generally
> work at 12,000dpi, but I've scanned transparencies for years with a
> flatbed and adapter and it's works fine and is very convenient and
> flexible.
>
> And finally SPEED MATTERS! Look at the reviews. The biggest
> differentiator these days is scanning speed, especially at very high
> resolution. It's tough to be accurate AND fast, and flatbed scanning
> can be deadly slow if you've got a lot of work to do.
>
> Consider the bundled software. Look at reviews. Unless, of course,
> you already own the software you plan to use.
>
> And if you got a ton of sheet scanning to do (such as OCR) you really
> want a sheetfed scanner, but that's a different beast all together.
>
> Cheers,
> tod
>
> On Feb 11, 2012, at 1:31 AM, George Barker wrote:
>
>> I thought I had a fair to middling handle on this stuff, but I'm
>> puzzled by the following Canon offerings on their scanners.
>>
>> CanoScan LiDE 700F (Mid Level)
>> High quality scanning up to 9600 X 9600 dpi high resolution and
>> 48-bit superior gradation
>>
>> CanoScan 5600F (High Range)
>> High quality scanning up to 4800 x 9600 dpi high resolution and
>> 48-bit superior gradation
>>
>> Can someone tell me the difference between 9600 X 9600 dpi and 4800 x
>> 9600 dpi; and why the 9600 X 9600 dpi resolution (which I'm assuming
>> is the superior quality?) is on the Mid Level scanner and not the
>> High Level.
>>
>> thanks
>> George
>> --
- 2d.
-
Re: Scanner Resolution question
Posted by: "George Barker" lynxster@ihug.com.au four46
Sat Feb 11, 2012 4:07 pm (PST)
Thanks for the info, Dan - a really helpful site - and all who responded.
I'm familiar with printing resolutions and also the de-screening
option, but never having needed to purchase a scanner I found the
formatting of the 9600 X 9600 dpi and 4800 x 9600 dpi specs rather
confusing.
First figure = optical res; second figure = stepper motor interval.
On with the search :-)
regards
George
>Howdy.
>
>George, read this web document for some excellent information on
>scanning and resolution.
>
><http://www.scantips.com/chap3c. >html
>
>The basic info on this site is accurate even though it uses scanning
>resolutions for older model scanners (optical resolutions and density
>ratings for newer scanners have really been going up).
>
>When looking a scanner specifications you compare the Optical
>resolution and not the Interpolated resolution. Interpolated means a
>mathematical formula in software that adds pixels to a scan - I
>sometimes call it the marketing department talking.
>
>The smaller number for the optical resolution specification is the
>actual hardware capable resolution built into a scanner.
>
>So the CanoScan 5600F's 4800 optical res is the actual hardware
>resolution.
<snip>
>
>On Sat, 11 Feb 2012 17:31:20 +1100, George Barker wrote:
<snip>
> > Can someone tell me the difference between 9600 X 9600 dpi and 4800 x
> > 9600 dpi; and why the 9600 X 9600 dpi resolution (which I'm assuming
>> is the superior quality?) is on the Mid Level scanner and not the
>> High Level.
>>
>> thanks
>> George
--
--------------------- --------- --------- --------- --------- -
George Barker
--------------------- --------- --------- --------- --------- -
- 3a.
-
.json files
Posted by: "Lynne" spock26@verizon.net lynnespock
Sat Feb 11, 2012 7:33 am (PST)
I get these files on my desktop and find it annoying. How do I stop them??
- 3b.
-
Re: .json files
Posted by: "Jon Kreisler" jonkreisler@gmail.com jonkreisler
Sat Feb 11, 2012 7:52 am (PST)
JSON stands for Java Script Object Notation. It is used by JavaScript to
transfer structured data between a server and a web application.
On a Mac, I believe FireFox uses it.
The contents of the files should be plain text, so if you look into a
couple of them you might be able to figure out the source of the data
transfer.
Jon
On Sat, Feb 11, 2012 at 10:33 AM, Lynne <spock26@verizon.net > wrote:
> **
>
>
> I get these files on my desktop and find it annoying. How do I stop them??
>
>
>
[Non-text portions of this message have been removed]
- 4a.
-
Re: I need a new scanner
Posted by: "Denver Dan" denver.dan@verizon.net denverdan22180
Sat Feb 11, 2012 7:43 am (PST)
Howdy.
Michael, see my response on a very similar topic to a post by George
Barker about Canon scanners.
Denver Dan
On Thu, 09 Feb 2012 23:10:04 -0500, Michael Mielko wrote:
> I have an older Epson flatbed scanner, the Epson Perfection 1250 ...
> It has began to show banding in the scans, and I believe the scanner
> optics are beginning to die.
>
> So after 8-10 years of service I need to replace this scanner. I
> would like to stay with the epson scanners, I currently have my
> sights on the Epson Perfection v500 but it is really big and bulky.
> I want something more compact, byt the Epson V33 scanners seem like
> garbage in quality when I checked them out at staples. So I am also
> considering the cannon flatbed scanners.
>
>
> Can anyone give me some feedback on the current group of Cannon and
> Epson scanners (Under 150 is my budget) ... Like everything, I do
> know you pay for quality ... and I don't expect a 59.00 scanner to do
> what a 500.00 scanner will do or quality of materials used to build
> the units..
>
> Thanks in advance.
>
> Mike.
>
- 4b.
-
Re: I need a new scanner
Posted by: "Tod Hopkins" hoplist@hillmanncarr.com todhop
Sat Feb 11, 2012 11:24 am (PST)
On Feb 10, 2012, at 6:22 PM, Otto Nikolaus wrote:
> Well, yes, but scanning a *print* at anything above a few hundred dpi is
> pointless anyway.
>
I'm sorry, but I wish people would stop saying that. It causes me endless problems when I request scans. There are many reasons why professionals and artists need images scanned at MUCH higher resolutions. See my earlier post.
Cheers,
tod
Tod Hopkins
Hillmann & Carr Inc.
todhopkins@hillmanncarr.com
[Non-text portions of this message have been removed]
- 5a.
-
Browsers sluggish after long time
Posted by: "DaveC" davec2468@yahoo.com davec2468
Sat Feb 11, 2012 8:28 am (PST)
When left on overnight (which is every night) in the morning all
applications are very sluggish (even Cmd-Tab won't show anything
until many seconds have passed). Safari always will not respond
except for the dreaded beach ball. When I bring up Force Quit dialog
it says that Safari is not responding. I then force quit Safari. But
the the remaining applications still are not as responsive as last
night.
So I have learned to quit both Firefox and Opera as well. Then the
computer is "right as rain".
If I restart all the 3 browsers (I have a unique use for all 3) and
open the same web pages that were open when I Force Quit the
browsers, all is fine. The computer is responsive and all apps run as
expected.
What could cause browsers to get to this state after a nighttime of disuse?
I do not sleep the Mini, only the display after an hour of disuse.
I leave several of the same web pages open all day & night so I do
not suspect these. (I do not reload during the night; why would they
be OK during the day but cause problems at night?)
I do housekeeping chores (using Applejack) at least once a week.
Behavior (as described above) is no different the next morning after
an Applejack run.
Before quitting the browsers, if I'm very patient I can start
Activity Monitor which shows that Activity Monitor is the application
using the greatest resources (about 7 percent).
I have add-ons for all the browsers, but none is installed on more
than one browser.
Any suggestions would be greatly appreciated.
Thanks,
Dave
--
2011 Mac mini 2.7 GHz i7 / 4 GB / 750 GB
OS X 10.6.8 (yes, Snow Leopard)
Safari 5.0.5 (yes I know it's not the current version -- by choice)
Firefox 10.0
Opera 11.61
- 5b.
-
Re: Browsers sluggish after long time
Posted by: "Bill B." bill501@mindspring.com kernos501
Sat Feb 11, 2012 9:20 am (PST)
At 8:28 AM -0800 2/11/12, DaveC wrote:
>So I have learned to quit both Firefox and Opera as well. Then the
>computer is "right as rain".
>
>If I restart all the 3 browsers (I have a unique use for all 3) and
>open the same web pages that were open when I Force Quit the
>browsers, all is fine. The computer is responsive and all apps run as
>expected.
>
>What could cause browsers to get to this state after a nighttime of disuse?
With 3 browsers open for a long time, I suspect you are running out of RAM and using Virtual Memory, ie, memory stored on a hard drive. All browsers have memory leaks, ie when you close pages or tabs, the memory it uses is not released and this accumulates over time. This will cause dramatic slowdowns of your computer.
I watch this in real time using a universal app called Memory Monitor on a graph on my desktop. You can also use Activity Monitor to watch this. The advantage of Memory Monitor is that you can make the graph very small and even float it. When you start seeing Page Outs, you are using virtual memory and probably seeing slowdowns.
Quitting the browsers clears the RAM and releases VM, so speed returns to normal.
Why this is happening is uncertain, and makes me wonder what the browsers are doing, You could check you Console logs to see if anything is going on with your browsers overnight. Or it may just be left over from long browser sessions which you notice on a new day.
I would also clear the browser caches.
Bill B.
- 6.
-
Canon PowerShot S95 Question
Posted by: "pat412255" pat412@mac.com pat412255
Sat Feb 11, 2012 10:15 am (PST)
I recently replaced my S95 & have a new battery (NB-6L) for it that I would be glad to send to anyone who can use it. First come, first served!
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