If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below. |
|
|
Thread Tools | Display Modes |
#1
|
|||
|
|||
Which free software could acquire 48 bits color depth pictures from a scanner ?
Hi all,
I need to scan some old films using a 48 bits color depth (in order to keep the quality after some graphical process). My Canon CS5200F does it well but none of my graphical softwares can handle 48 bits picture. The GIMP 2.6.2 translated my pictures from 48 to 24 bits. IrfanView does the same as the GIMP (48 = 24). I also tried XnView which is supposed to handle 48 bits pictures but when the picture is transfered from the scanner, I get a black screen (I tried in 24 bits and got the correct picture so this is really a color depth problem). I heard that the GIMP 2.6.2 was using a module called GECL which handles 48 bits pictures but I did not find any to configure/activate it : my pictures are always handled as 24 bits picture. I do not want to buy any graphical software because many free ones exist. = Do you know any free software or plugin which could work with 48 bits pictures acquired from a scanner ? Thanks in advance for your help. |
#2
|
|||
|
|||
Which free software could acquire 48 bits color depth pictures from a scanner ?
In article , Guilbert STABILO
wrote: = Do you know any free software or plugin which could work with 48 bits pictures acquired from a scanner ? try the 30 day free trial of adobe photoshop cs4. |
#3
|
|||
|
|||
Which free software could acquire 48 bits color depth pictures from a scanner ?
On 16 Nov 2008 17:11:01 GMT, Guilbert STABILO
wrote: Hi all, I need to scan some old films using a 48 bits color depth (in order to keep the quality after some graphical process). My Canon CS5200F does it well but none of my graphical softwares can handle 48 bits picture. The GIMP 2.6.2 translated my pictures from 48 to 24 bits. IrfanView does the same as the GIMP (48 = 24). I also tried XnView which is supposed to handle 48 bits pictures but when the picture is transfered from the scanner, I get a black screen (I tried in 24 bits and got the correct picture so this is really a color depth problem). I heard that the GIMP 2.6.2 was using a module called GECL which handles 48 bits pictures but I did not find any to configure/activate it : my pictures are always handled as 24 bits picture. I do not want to buy any graphical software because many free ones exist. = Do you know any free software or plugin which could work with 48 bits pictures acquired from a scanner ? Thanks in advance for your help. While not free, it's relatively inexpensive. Photoline www.photoline.com From what I recall the free demo doesn't really expire nor cripple itself, you just get a longer nag screen after 30 days. If you save your scans in CMYK format then it will even properly handle 64-bit color-depths. It's the only software that I know of that can do this. PhotoShop still only uses 16-bit math for most of its tools and functions. Wholly incapable of retaining all that extra data during any processing of these larger bit-depths. This has been a thorn in the side of the "pro" world for the last 2 decades of using PhotoShop, but they all seem to ignore it and live with it. Only recently has Adobe started to add in some 32-bit math routines to only some of their tools and features, but by no means do all PhotoShop tools and filters use 32-bit math. They're still working on it. Photoline has been a fully 32-bit math platform for the last 15 years. |
#4
|
|||
|
|||
Which free software could acquire 48 bits color depth pictures from a scanner ?
In article , mark raif
wrote: If you save your scans in CMYK format then it will even properly handle 64-bit color-depths. It's the only software that I know of that can do this. PhotoShop still only uses 16-bit math for most of its tools and functions. that's totally false. Wholly incapable of retaining all that extra data during any processing of these larger bit-depths. This has been a thorn in the side of the "pro" world for the last 2 decades of using PhotoShop, but they all seem to ignore it and live with it. Only recently has Adobe started to add in some 32-bit math routines to only some of their tools and features, but by no means do all PhotoShop tools and filters use 32-bit math. They're still working on it. Photoline has been a fully 32-bit math platform for the last 15 years. not that i believe photoline existed 15 years ago, but photoshop has been 32 bit since it's debut in 1990. |
#5
|
|||
|
|||
Which free software could acquire 48 bits color depth pictures from a scanner ?
Sorry, wrong link.
Photoline is at www.pl32.net On 16 Nov 2008 17:11:01 GMT, Guilbert STABILO wrote: Hi all, I need to scan some old films using a 48 bits color depth (in order to keep the quality after some graphical process). My Canon CS5200F does it well but none of my graphical softwares can handle 48 bits picture. The GIMP 2.6.2 translated my pictures from 48 to 24 bits. IrfanView does the same as the GIMP (48 = 24). I also tried XnView which is supposed to handle 48 bits pictures but when the picture is transfered from the scanner, I get a black screen (I tried in 24 bits and got the correct picture so this is really a color depth problem). I heard that the GIMP 2.6.2 was using a module called GECL which handles 48 bits pictures but I did not find any to configure/activate it : my pictures are always handled as 24 bits picture. I do not want to buy any graphical software because many free ones exist. = Do you know any free software or plugin which could work with 48 bits pictures acquired from a scanner ? Thanks in advance for your help. While not free, it's relatively inexpensive. Photoline www.photoline.com From what I recall the free demo doesn't really expire nor cripple itself, you just get a longer nag screen after 30 days. If you save your scans in CMYK format then it will even properly handle 64-bit color-depths. It's the only software that I know of that can do this. PhotoShop still only uses 16-bit math for most of its tools and functions. Wholly incapable of retaining all that extra data during any processing of these larger bit-depths. This has been a thorn in the side of the "pro" world for the last 2 decades of using PhotoShop, but they all seem to ignore it and live with it. Only recently has Adobe started to add in some 32-bit math routines to only some of their tools and features, but by no means do all PhotoShop tools and filters use 32-bit math. They're still working on it. Photoline has been a fully 32-bit math platform for the last 15 years. |
#6
|
|||
|
|||
Which free software could acquire 48 bits color depth pictures from a scanner ?
On Sun, 16 Nov 2008 12:53:17 -0500, nospam wrote:
In article , mark raif wrote: If you save your scans in CMYK format then it will even properly handle 64-bit color-depths. It's the only software that I know of that can do this. PhotoShop still only uses 16-bit math for most of its tools and functions. that's totally false. I guess that's why everyone is raving about CS4 finally supporting some 32-bit math in some of its functions. Go back to kindergarten, would you? Wholly incapable of retaining all that extra data during any processing of these larger bit-depths. This has been a thorn in the side of the "pro" world for the last 2 decades of using PhotoShop, but they all seem to ignore it and live with it. Only recently has Adobe started to add in some 32-bit math routines to only some of their tools and features, but by no means do all PhotoShop tools and filters use 32-bit math. They're still working on it. Photoline has been a fully 32-bit math platform for the last 15 years. not that i believe photoline existed 15 years ago, but photoshop has been 32 bit since it's debut in 1990. |
#7
|
|||
|
|||
Which free software could acquire 48 bits color depth pictures from a scanner ?
In article , NeilMolon
wrote: I guess that's why everyone is raving about CS4 finally supporting some 32-bit math in some of its functions. actually they're raving about cs4 being *64 bit*. |
#8
|
|||
|
|||
Which free software could acquire 48 bits color depth pictures from a scanner ?
Guilbert STABILO added these comments in the current discussion
du jour ... Hi all, I need to scan some old films using a 48 bits color depth (in order to keep the quality after some graphical process). My Canon CS5200F does it well but none of my graphical softwares can handle 48 bits picture. Just curious as to why you think you need it. I obviously have not seen your negs but I'd be surprised if any "old films" have nearly enough dynamic range to begin to exceed 16.7 million color capability. Besides which, isn't 48 bit color - 16 bits/channel, along the lines of 4 bits of noise, maybe more? The GIMP 2.6.2 translated my pictures from 48 to 24 bits. IrfanView does the same as the GIMP (48 = 24). I also tried XnView which is supposed to handle 48 bits pictures but when the picture is transfered from the scanner, I get a black screen (I tried in 24 bits and got the correct picture so this is really a color depth problem). I heard that the GIMP 2.6.2 was using a module called GECL which handles 48 bits pictures but I did not find any to configure/activate it : my pictures are always handled as 24 bits picture. I do not want to buy any graphical software because many free ones exist. = Do you know any free software or plugin which could work with 48 bits pictures acquired from a scanner ? Thanks in advance for your help. -- HP, aka Jerry "Never attribute to malice that which can be adequately explained by stupidity!" - Hanlon's Razor |
#9
|
|||
|
|||
Which free software could acquire 48 bits color depth pictures from a scanner ?
mark raif added these comments in the current discussion du jour
.... [snip] If you save your scans in CMYK format then it will even properly handle 64-bit color-depths. It's the only software that I know of that can do this. PhotoShop still only uses 16-bit math for most of its tools and functions. Wholly incapable of retaining all that extra data during any processing of these larger bit-depths. This has been a thorn in the side of the "pro" world for the last 2 decades of using PhotoShop, but they all seem to ignore it and live with it. Only recently has Adobe started to add in some 32-bit math routines to only some of their tools and features, but by no means do all PhotoShop tools and filters use 32-bit math. They're still working on it. Photoline has been a fully 32-bit math platform for the last 15 years. mark, my computer math is pretty rusty but what does 16 bit floating point or whatever vs. 32 bit or even 64 bit have anything at all to do with color depth? Or, am I misunderstanding you? Is what you're really saying that PS will cut down the color depth back to 24 bit, do the function, then step it back up to 48 which is pointless? This is the first I've ever heard of Photoline, but then I'm hardly a pro. But, 15 years ago? What motherboard or CPU was even remotely capable of floating point math at 32 bits/channel? Or, am I again misunderstanding you? -- HP, aka Jerry "Never attribute to malice that which can be adequately explained by stupidity!" - Hanlon's Razor |
#10
|
|||
|
|||
Which free software could acquire 48 bits color depth pictures from a scanner ?
nospam added these comments in the current discussion du jour
.... In article , NeilMolon wrote: I guess that's why everyone is raving about CS4 finally supporting some 32-bit math in some of its functions. actually they're raving about cs4 being *64 bit*. I'd believe that IF one has a 62 bit O/S -- HP, aka Jerry "Never attribute to malice that which can be adequately explained by stupidity!" - Hanlon's Razor |
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
How many bits per color are needed | Scott W | Digital Photography | 41 | February 8th 06 02:06 AM |
How many bits per color are needed | Scott W | 35mm Photo Equipment | 39 | February 8th 06 02:06 AM |
Some color print darkroom bits & pieces | General Equipment For Sale | 0 | April 16th 05 05:54 PM | |
FREE: Some color print darkroom bits & pieces | General Equipment For Sale | 0 | April 16th 05 05:48 PM | |
FREE: Some color print darkroom bits & pieces | Darkroom Equipment For Sale | 0 | April 16th 05 05:48 PM |