Re: Question About File Types & Bit Depth


Sep 22, 2011

 


----------------------------

#46860 Sep 22, 2011

I have been imaging for about four months with a Canon 450D and, mainly, an AT106 on an Atlas. I use Maxim DSLR for stacking and calibrating and some enhancements; most of the remainder I use Photoshop CS5. I have a lot to learn, but think I am progressing nicely and have some decent astrophotos under my belt.



Anyway, my question is around raw files and 16 bit .tiff files. In all my reading, I always read that you should work with 16 bit files. Typically, I use CS5 to convert raw files to .tiff, then import to Maxim for stack/calibrate, then save it as a 16 bit .tiff to use in PS.



The 450D, i found out, is a 14 bit camera. I then went back and looked at my original .tiff converted files...they were all 8 bit. So, when i saved them in Maxim as 16 bit, I am guessing the extra color data was already lost....there are questions here.....



* I thought Maxim could stack and calibrate Canon Raw files....is that true? I thought I had tried that and couldn't get it to work.



* Is there a setting in CS5 for converting raw .cr2 files to 16 bit .tiff? I can't find it if there is, looked in preferences, etc...



* Is there a better way of going about this?



* Am I spinning my wheels over nothing and should stop sweating this?



Any help, advice, direction, or experience is most appreciated.



Joe



----------------------------

#46861 Sep 22, 2011

Maxim will definitely stack your raw files without any problems. I set my

camera (also a 450d) to "raw monochrome" for everything - lights, darks and

flats. You may need to install the latest Canon drivers somewhere, I know

that I had installed all of the Canon stuff that came with the camera before

I loaded in Maxim.







Rgrds-Ross







From: MaxImDL@yahoogroups.com [mailto:MaxImDL@yahoogroups.com] On Behalf Of

joe.lopinot

Sent: Thursday, September 22, 2011 2:19 PM

To: MaxImDL@yahoogroups.com

Subject: [MaxImDL] Question About File Types & Bit Depth











I have been imaging for about four months with a Canon 450D and, mainly, an

AT106 on an Atlas. I use Maxim DSLR for stacking and calibrating and some

enhancements; most of the remainder I use Photoshop CS5. I have a lot to

learn, but think I am progressing nicely and have some decent astrophotos

under my belt.



Anyway, my question is around raw files and 16 bit .tiff files. In all my

reading, I always read that you should work with 16 bit files. Typically, I

use CS5 to convert raw files to .tiff, then import to Maxim for

stack/calibrate, then save it as a 16 bit .tiff to use in PS.



The 450D, i found out, is a 14 bit camera. I then went back and looked at my

original .tiff converted files...they were all 8 bit. So, when i saved them

in Maxim as 16 bit, I am guessing the extra color data was already

lost....there are questions here.....



* I thought Maxim could stack and calibrate Canon Raw files....is that true?

I thought I had tried that and couldn't get it to work.



* Is there a setting in CS5 for converting raw .cr2 files to 16 bit .tiff? I

can't find it if there is, looked in preferences, etc...



* Is there a better way of going about this?



* Am I spinning my wheels over nothing and should stop sweating this?



Any help, advice, direction, or experience is most appreciated.



Joe











[Non-text portions of this message have been removed]



----------------------------

#46862 Sep 22, 2011

What software are you using for the capture? Are you using Maxim?



Are you importing the files directly when captured or are you reading the card after the whole session?



Regards

Geert

--- In MaxImDL@yahoogroups.com, "joe.lopinot" spqr44@...> wrote:

>

> I have been imaging for about four months with a Canon 450D and, mainly, an AT106 on an Atlas. I use Maxim DSLR for stacking and calibrating and some enhancements; most of the remainder I use Photoshop CS5. I have a lot to learn, but think I am progressing nicely and have some decent astrophotos under my belt.

>

> Anyway, my question is around raw files and 16 bit .tiff files. In all my reading, I always read that you should work with 16 bit files. Typically, I use CS5 to convert raw files to .tiff, then import to Maxim for stack/calibrate, then save it as a 16 bit .tiff to use in PS.

>

> The 450D, i found out, is a 14 bit camera. I then went back and looked at my original .tiff converted files...they were all 8 bit. So, when i saved them in Maxim as 16 bit, I am guessing the extra color data was already lost....there are questions here.....

>

> * I thought Maxim could stack and calibrate Canon Raw files....is that true? I thought I had tried that and couldn't get it to work.

>

> * Is there a setting in CS5 for converting raw .cr2 files to 16 bit .tiff? I can't find it if there is, looked in preferences, etc...

>

> * Is there a better way of going about this?

>

> * Am I spinning my wheels over nothing and should stop sweating this?

>

> Any help, advice, direction, or experience is most appreciated.

>

> Joe

>







----------------------------

#46863 Sep 22, 2011

Hi Joe,



Maxim will open the files and allow you to calibrate, stack, and save as 16 bit TIF or FIT files. You can do a lot more in Maxim, but if you are familiar with PS for image processing, then stay with it.



The files you already processed and saved as 8 bit have lost information. If you have the original raw files, you can reprocess them by opening in Maxim and saving as 16 bit TIF.



Don

--- In MaxImDL@yahoogroups.com, "joe.lopinot" spqr44@...> wrote:

>

> I have been imaging for about four months with a Canon 450D and, mainly, an AT106 on an Atlas. I use Maxim DSLR for stacking and calibrating and some enhancements; most of the remainder I use Photoshop CS5. I have a lot to learn, but think I am progressing nicely and have some decent astrophotos under my belt.

>

> Anyway, my question is around raw files and 16 bit .tiff files. In all my reading, I always read that you should work with 16 bit files. Typically, I use CS5 to convert raw files to .tiff, then import to Maxim for stack/calibrate, then save it as a 16 bit .tiff to use in PS.

>

> The 450D, i found out, is a 14 bit camera. I then went back and looked at my original .tiff converted files...they were all 8 bit. So, when i saved them in Maxim as 16 bit, I am guessing the extra color data was already lost....there are questions here.....

>

> * I thought Maxim could stack and calibrate Canon Raw files....is that true? I thought I had tried that and couldn't get it to work.

>

> * Is there a setting in CS5 for converting raw .cr2 files to 16 bit .tiff? I can't find it if there is, looked in preferences, etc...

>

> * Is there a better way of going about this?

>

> * Am I spinning my wheels over nothing and should stop sweating this?

>

> Any help, advice, direction, or experience is most appreciated.

>

> Joe

>



----------------------------

#46864 Sep 22, 2011

Aren't you better letting Maxim do the work and then just converting the

final fit file to a tif? I think (?) that Maxim will not be able to

auto-calibrate or recognize darks/flats if you start with raw files. If

that's wrong, let me know.



Rgrds-Ross







From: MaxImDL@yahoogroups.com [mailto:MaxImDL@yahoogroups.com] On Behalf Of

dmwmpd

Sent: Thursday, September 22, 2011 3:32 PM

To: MaxImDL@yahoogroups.com

Subject: [MaxImDL] Re: Question About File Types & Bit Depth











Hi Joe,



Maxim will open the files and allow you to calibrate, stack, and save as 16

bit TIF or FIT files. You can do a lot more in Maxim, but if you are

familiar with PS for image processing, then stay with it.



The files you already processed and saved as 8 bit have lost information. If

you have the original raw files, you can reprocess them by opening in Maxim

and saving as 16 bit TIF.



Don



--- In MaxImDL@yahoogroups.com mailto:MaxImDL%40yahoogroups.com> ,

"joe.lopinot" spqr44@...> wrote: >

> I have been imaging for about four months with a Canon 450D and, mainly,

an AT106 on an Atlas. I use Maxim DSLR for stacking and calibrating and some

enhancements; most of the remainder I use Photoshop CS5. I have a lot to

learn, but think I am progressing nicely and have some decent astrophotos

under my belt. >

> Anyway, my question is around raw files and 16 bit .tiff files. In all my

reading, I always read that you should work with 16 bit files. Typically, I

use CS5 to convert raw files to .tiff, then import to Maxim for

stack/calibrate, then save it as a 16 bit .tiff to use in PS. >

> The 450D, i found out, is a 14 bit camera. I then went back and looked at

my original .tiff converted files...they were all 8 bit. So, when i saved

them in Maxim as 16 bit, I am guessing the extra color data was already

lost....there are questions here..... >

> * I thought Maxim could stack and calibrate Canon Raw files....is that

true? I thought I had tried that and couldn't get it to work. >

> * Is there a setting in CS5 for converting raw .cr2 files to 16 bit .tiff?

I can't find it if there is, looked in preferences, etc... >

> * Is there a better way of going about this?

>

> * Am I spinning my wheels over nothing and should stop sweating this?

>

> Any help, advice, direction, or experience is most appreciated.

>

> Joe

>











[Non-text portions of this message have been removed]



----------------------------

#46870 Sep 23, 2011

Hello

Maxim is powerfull enough to calibrate, stack and some basic post processing.

Have you tried PixInsight (pixinsight.com/) for post processing? It isnt so expensive as PS and it is a realy a powerfull soft made for processing astro images.





Regards

Geert





--- In MaxImDL@yahoogroups.com, Ross Salinger rgsalinger@...> wrote:

>

> Yes I use 5.15 and just let the files download to my laptop. The next

> morning I copy everything off the laptop onto my desktop. I normally don't

> even stay at the scope - I use Windows Remote Desktop and just stay in my

> office. I have no problem with the equipment at all. My problem is how to

> process my images without using Photoshop (which I really don't want to buy

> as I would never use it for anything else) but I'm beginning to think that

> it is impossible to do without it.

>

>

>

> Rgrds-Ross

>

>

>

> From: MaxImDL@yahoogroups.com [mailto:MaxImDL@yahoogroups.com] On Behalf Of

> gvanhau

> Sent: Thursday, September 22, 2011 2:48 PM

> To: MaxImDL@yahoogroups.com

> Subject: [MaxImDL] Re: Question About File Types & Bit Depth

>

>

>

>

>

> What software are you using for the capture? Are you using Maxim?

>

> Are you importing the files directly when captured or are you reading the

> card after the whole session?

>

> Regards

> Geert

>

> --- In MaxImDL@yahoogroups.com mailto:MaxImDL%40yahoogroups.com> ,

> "joe.lopinot" spqr44@> wrote:

> >

> > I have been imaging for about four months with a Canon 450D and, mainly,

> an AT106 on an Atlas. I use Maxim DSLR for stacking and calibrating and some

> enhancements; most of the remainder I use Photoshop CS5. I have a lot to

> learn, but think I am progressing nicely and have some decent astrophotos

> under my belt.

> >

> > Anyway, my question is around raw files and 16 bit .tiff files. In all my

> reading, I always read that you should work with 16 bit files. Typically, I

> use CS5 to convert raw files to .tiff, then import to Maxim for

> stack/calibrate, then save it as a 16 bit .tiff to use in PS.

> >

> > The 450D, i found out, is a 14 bit camera. I then went back and looked at

> my original .tiff converted files...they were all 8 bit. So, when i saved

> them in Maxim as 16 bit, I am guessing the extra color data was already

> lost....there are questions here.....

> >

> > * I thought Maxim could stack and calibrate Canon Raw files....is that

> true? I thought I had tried that and couldn't get it to work.

> >

> > * Is there a setting in CS5 for converting raw .cr2 files to 16 bit .tiff?

> I can't find it if there is, looked in preferences, etc...

> >

> > * Is there a better way of going about this?

> >

> > * Am I spinning my wheels over nothing and should stop sweating this?

> >

> > Any help, advice, direction, or experience is most appreciated.

> >

> > Joe

> >

>

>

>

>

>

> [Non-text portions of this message have been removed]

>







----------------------------

#46875 Sep 23, 2011

Thanks everyone for the replies. Yes, i keep all my raw files on an external drive, so i am going back and see if I can get Maxim to do the stack/calibration on the raw files. For some reason, i seem to remember that I had troubles with that, but I will try again.



I thought about that last night after I posted, using the fit file to convert to a 16 bit tiff. I don't use software for capture, I sit at the eyepiece and manually guide. Will autoguide in the future, but wanted to learn from ground zero first.



Will try all of these suggestions and report back...thanks again for all the help.



Joe

--- In MaxImDL@yahoogroups.com, Ross Salinger rgsalinger@...> wrote:

>

> Aren't you better letting Maxim do the work and then just converting the

> final fit file to a tif? I think (?) that Maxim will not be able to

> auto-calibrate or recognize darks/flats if you start with raw files. If

> that's wrong, let me know.

>

> Rgrds-Ross

>

>

>

> From: MaxImDL@yahoogroups.com [mailto:MaxImDL@yahoogroups.com] On Behalf Of

> dmwmpd

> Sent: Thursday, September 22, 2011 3:32 PM

> To: MaxImDL@yahoogroups.com

> Subject: [MaxImDL] Re: Question About File Types & Bit Depth

>

>

>

>

>

> Hi Joe,

>

> Maxim will open the files and allow you to calibrate, stack, and save as 16

> bit TIF or FIT files. You can do a lot more in Maxim, but if you are

> familiar with PS for image processing, then stay with it.

>

> The files you already processed and saved as 8 bit have lost information. If

> you have the original raw files, you can reprocess them by opening in Maxim

> and saving as 16 bit TIF.

>

> Don

>

> --- In MaxImDL@yahoogroups.com mailto:MaxImDL%40yahoogroups.com> ,

> "joe.lopinot" spqr44@> wrote:

> >

> > I have been imaging for about four months with a Canon 450D and, mainly,

> an AT106 on an Atlas. I use Maxim DSLR for stacking and calibrating and some

> enhancements; most of the remainder I use Photoshop CS5. I have a lot to

> learn, but think I am progressing nicely and have some decent astrophotos

> under my belt.

> >

> > Anyway, my question is around raw files and 16 bit .tiff files. In all my

> reading, I always read that you should work with 16 bit files. Typically, I

> use CS5 to convert raw files to .tiff, then import to Maxim for

> stack/calibrate, then save it as a 16 bit .tiff to use in PS.

> >

> > The 450D, i found out, is a 14 bit camera. I then went back and looked at

> my original .tiff converted files...they were all 8 bit. So, when i saved

> them in Maxim as 16 bit, I am guessing the extra color data was already

> lost....there are questions here.....

> >

> > * I thought Maxim could stack and calibrate Canon Raw files....is that

> true? I thought I had tried that and couldn't get it to work.

> >

> > * Is there a setting in CS5 for converting raw .cr2 files to 16 bit .tiff?

> I can't find it if there is, looked in preferences, etc...

> >

> > * Is there a better way of going about this?

> >

> > * Am I spinning my wheels over nothing and should stop sweating this?

> >

> > Any help, advice, direction, or experience is most appreciated.

> >

> > Joe

> >

>

>

>

>

>

> [Non-text portions of this message have been removed]

>



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