[Mongoose]

Hey guys.. check this out:



Notice how the lines on the curve are jagged? Does anyone know what the heck is wrong? Please help... I want to paint!

Mongoose

[Loki]

your brush is too slow. could be one or more of the following reasons:

* machine too slow - there are different ways to optimize - check my page

* brush spacing too tight - your machine can't handle this dense brush - increase spacing (doubleclick on brush to change)

* image too big - machine too slow for it

* too many layers

* brush too big


- basically it's more or less a speed-issue, but there are workarounds ...

it would also help if you could describe the circumstances - then it's easier to pinpoint ...



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--
DigitalIllustrationOutpost - http://www.vigilante.net/~loki

[Mongoose]

Ermmm...


PIII 700
256mb RAM
32mb Video
19" Monitor
27 Gig Ultra ATA Hard Drive..
..etc

I don't think it's my machine's speed : /

[Optical]

hey mongoose, a few others and i on the board have had the same problem, and i here it might have something to do with the magnetic field of your monitor and the tablet itself. I am going to experiment later today. I will give you my results later if you would like.

[Mongoose]

Optical,

That would be MUCH appreciated man, thanks a million!

[Ko]

Hi guys 'n' gals

Well I have this stinkin' problem too!
I haven't come up with anything usefull yet, but the problem seems to far worse in photoshop than in painter 5/6.
Painter is actually close to flawless.
Even if I use small brushes i get the jagged look in Photoshop. The faster I draw the worse.
A few friends of mine are experiencing the same stupid jags. We have tried with all sorts of drivers and the same sh*t happens.
And by the way... There doesn't seem to be
any glitches with any software we have tried
on a couple of different SGI's.
I have a PIII 500MHz with 256MB RAM, so my hardware should be sufficient.
My pad is a UD-0608 series A5 Wacom
My guess is that photoshop is the sinner!

If anyone have any enlightening words... please post.

Ko

[Mongoose]

Yup, only in Photoshop for me too. Painter 6 is definitely flawless, as is Painter Classic, and Painter 5.5

Has anyone attempted to fix this problem with an EARLIER version of Photoshop. I know it sounds kinda silly, but Adobe has been known to do this sorta thing. If anyone is willing to install a previous version of Photoshop 3.0/4.0/5.0 and see what happens, that'd be great.. =)

Mongoose

[Frost]

I think it could be an issue with SERIAL tablets, which have far smaller bandwidth than a USB port. The speed of serial ports are very limited... I also have a serial tablet and have the same problem. I think USB is the way to go...

frost.

[Ko]

Hey Mongoose...

I've been using Photoshop since 3.0
Not for drawing, but for the usual design/DTP stuff.
And I recall having the same prob's then, when using, even small, brushes at "high speed".

I was wondering if any Mac-users out there can confirm this bug on the Macintrash
Been working with those for nearly five years but never with an Artpad....

Ko

[sfr]

On the Mac tablets are connected to ADB and nowadays USB, which are both significantly faster buses than the shitty old PC serial ports. So I'd bet this isn't a widespread problem on the Mac side (also because Adobe and Wacom are originally "Mac companies").

Saffron / Sunflower

[Mongoose]

CRAP. The only reason I got a serial tablet is because my old system didn't have a USB port. My new system does... but that does me no good now.

But then again, how can it be okay in Painter, and not Photoshop? They both use the same port

[Ko]

Yeah.... good point Mongoose

I have a serial tablet an run Windows NT 4.0
I do have 2 USB ports but Win NT doesn't support USB. so tough luck!
Furthermore I don't wish to pony out the dough for a new USB tablet...

Ko

[Loki]

Mongoose - yes, your machine is obviously fast enough.
But, what I meant was: Photoshop does that if you want to paint too fast, especially on higher-res images, because of the airbrush-interpolations it's doing, another factor is, how far you're zoomed out, because it takes PS a while to integrate your stroke in the smaller view.
Yes, it also happens on the Mac, even though my machine is pretty beefy. Adobe should optimize their brush-engine instead of making their new PS-versions 'webfriendly'! There are way more users that use it to do serious paintwork than that make animated GIFs with it ...

So, my solution is: patience! 700Mhz are obviously still not enough for realtime in PS

[ustorfixx]

Thought: As the processor's get faster PS will just get more complicated thus the only way this problem will be fixed is when we have a processor that can actually run in "real time" or faster. (that is at the speed of the human brain)

Or maybe I'm wrong, but it's just a thought.

L8r.
--Ustor

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http://www.geocities.com/ustorfixx/

[nav]

I have the same problem with my USB tablet, so the problem isn't just confined to serial tablets...

[Mongoose]

Good. Thanks for confirming that nav.

-goosey.

[starfish]

Those jaggies appears couse of the low sample rate.
Since windows reads the position of the pointer device at a certain rate, the faster you draw the longer between the 'reading points'.

My 5 cents

[imdaking]

hey starfish......

then do you think the PS/2 Rate prog that is somewhere would help out on the refresh rates??

[n8]

hey...yeah...i dont think ps2 rate would work for the the tablet coz it just ups the rate for the mouse ...not sure how it works tho???...

[Pigeon]

I have the same problem too, on my Mac, ADB port pad, mostly in Photshop, but also when I'm drawing REALLY fast in Painter. Most of us seem to use smaller tablets (correct me if I'm wrong); do you think the size of the tablet has anything to do with it?

[CyberArtist]

I use a 9x12 Intuos ... I have the same problem. It's not a size thing.


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-CyberA(rtist) aka Ben Golus

Cyber...

[StrangeFate]

I thought the last service pack adds USB support to NT4 (?) ...i might be wrong but...

...How fast do you guys scribble to get that jagged effect ?
I checked it out on my AMD450 and i had to scribble the fastest i can in Photoslut to start getting that effect on a 800x800 pic and almost any brush size. However, was never that weird as in Mongoose's post.
I got a cute small serial Wacom.

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http://www.futurespace.ch/strangefate" TARGET=_blank>http://www.planetquake.com/strangefate
http://www.futurespace.ch/strangefate

[henrik]

You could try to remove some of the "autostart" or "startup" programs. For me it was a pain to draw (far worse than your exanple), until I removed the sounblaster-startup-things, the Realplayer and so on...
Now it is alot faster, but not satisfying enough though...Does anybody know why my Painter 6 is so slow? It is painfully slow even with the smallest brush on 200x200.
http://go.to/penk

[Frost]

It seems you can adjust the baud rate of your COM port (if that should help any) on certain systems -- the higher the baud rate, the more sampling per second, the more precise the brush. As for Painter goes, it probably interpolates the stroke positions between input samples using some spline algo, causing no linear streaks from linear key interpolation like Photoshop.

My personal solution (sadly enough) was to get used to it and to paint slower. I'm surprised the USB tablet isn't faster...

frost.

[Ko]

Just a comment on Frost's suggestion....
I tried to adjust the Baud-rate as the first thing, in the Ports tab under control panel (NT4.0).
I tried several higher baud-rates, but tadaaa.... no friggin' luck

Ko

[thor64]

You are right n8 the PS2Rate doesn't affect the tablet (I tested it).
I think there is a way for using serial tablets in USB, like the MS Sidewinder joystick, where there is an USB adapter?

[tanis]

If you want to open up your tablet cable and check what every pin is connected to, we could easily build an USB adapter, but actually I don't think that the Sidewinder's one would work. The main problem with USB is that you have got the AC alimentation on two wires and so your risk is to burn your tablet if they aren't corresponding. But your idea could be applicable. Anybody willing to open his tablet for "the cause"?

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C'ya!

Valerio Santinelli a.k.a. TANiS
[email protected]

[Begby]

Its the sample rate. PS/2 rate changes will have no effect. I think the rate on the tablet is preset to something around 60hz. I am guessing that Painter must interpolate between the updates to come up with smoother curves. So your only solution is to either find a way to increase the sample rate (someone should call Wacom to see if there is a way) or just draw curves slower in Photshop

[B]

i had that problem untill irasied my virtual memory to 3 gigs,. seems to work fine now,.


b

[ScoobyDoo]

quote:

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Originally posted by CyberArtist:
...It's not a size thing.

---

The girls are just saying that to be polite...

Just kidding.

Seriously though, the sampling rate is only part of it.

There are several reasons that could cause this. System resources(I know youve got blazing PC but, still, you CAN run down on resources. Especially PS or 3D Studio)
And brush spacing...
That and drivers. I used to have that problem ALL the time no matter what with a certain version of my Calcomp drivers.

Not anymore.
Now I can limit that by using smaller files, or less layers, and increasing the spacing/sampling rate.


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Scoobydoobydooooooo!