please consider it is also depending from the minimal viewing distance

do you plan a megaposter on an overhead billboard or a nice poster hanging over your sofa?

the human eyes resolution is limited related to the viewing distance beside of individual visus

then you should choose 300dpi or more, which means 12000 pix or better for 1m

a professional large format printer has a resolution of 1440dpi or more

Last edited by Paul (2010-03-03 21:38:36)

The output from Autopano should be loaded into a proper image editing package like Photoshop prior to printing.

As a minimum the file should be sized for the final print size and then resharpened to suit the final media output. Other considerations would include using the ICC colour profile if one is available from your printer.

mohammad233b wrote:

Photosbykev wrote:

The output from Autopano should be loaded into a proper image editing package like Photoshop prior to printing.

As a minimum the file should be sized for the final print size and then resharpened to suit the final media output. Other considerations would include using the ICC colour profile if one is available from your printer.

I don't have a personal printer and need to know if my panorama print will be with a good quality or no.

Mohammad

The print company you use is likely to have the ICC profile for their printers rather than your printer

Use 300dpi as the optimum resolution for a good quality print. So just multiple the width of the image (in inches) that you want the final print to be by 300 to get the pixel width and then do the same for the vertical. I printed the image below at 72" x 24" the image was 21600 x 7200 pixels.

A metre wide image should have at least 39" x 300 = 11,700 pixels wide

My better half is only 5'3"

Last edited by Photosbykev (2010-03-03 22:38:44)

Hi!

The question is: what amount of pixels has the file you want to print?

A camera´s picture - and the rendered file you generate in APG also - contents pixels.
A printed picture contents dots.

Here we have the problem to "translate" pixels into dots.

Dots are related to the technology the printer works with.

Usually - in professional photography and printing - the rule for the image resolution used for printing is: print-size @ 300dpi. That´s because offset printing - news-magazins, catalogues, books and so on - use 300dpi.
So for offset-print your imagefile resp. rendered picture has to be: size@300dpi. Size means the amount of pixels in an image-file you want to print at a given height and length.

In your case you maybe wouldn´t print as offset-mass printing . .

So the kind of printing for your demands use different techniques - ink, Lambda, Lightjet and some.

A good rule is here: 150dpi imagefile-resolution @ print-size for ink. This works fine at distances close to 1m.
The printer´s resolution basically can´t be high enough - but that´s nothing to do with the resolution of your image-file.

The printer´s resolution - the density of the dots it puts onto the paper - determines the grade of details you can realize at a given distance.

Conclusion:

1) image-file: here it´s essential to have high native resolution - as a matter of fact it can´t be high enough . . .
That´s the reason pros use cameras up to actually 60mpx resp. more than 170mpx (scanbacks like BetterLight and so on).
2) print-file: here you prepare the image-file for being printed.
You give it a physical size: height and length @ an amount of dots which means the grade of detail-quality you want to be in the print.

The closer the viewing distance the finer the printer´s dots have to be.

In the end that´s a very complex theme - look for a good print-service and talk to them. They´ll usually provide a calibration file to match their system.

best, Klaus

mohammad233b wrote:

I know there's a formula mathematically calculate for the best dimensions for the high quality prints. For some panorama photographers it's an important item for the best results of print. So autopano will be better when there's a software for this challenge.

Mohammad

If you are looking for a way to estimate the pixel resolution of a partial (less than 360x180) pano shot as a regular mosaic (grid) of shots - so many rows and so many columns - then you can use the (free) Papywizard software in simulation mode.

Download it here:
http://www.papywizard.org/

mohammad233b wrote:

Klaus
What's the best setting for image bracketing for Canon G10?

Mohammad

I don´t know the camera - but generally a good setting is: -2/0/+2. Using that you have a very wide range.
But +1/0/-1 also works well.

Using DSLR Remote Pro with my Canon i do 15 steps bracketing sometimes - that´s extreme. But ideal for shooting sunsets for example.

best, Klaus

klausesser wrote:

mohammad233b wrote:

Klaus
What's the best setting for image bracketing for Canon G10?

Mohammad

Using DSLR Remote Pro with my Canon i do 15 steps bracketing sometimes - that´s extreme. But ideal for shooting sunsets for example.

best, Klaus

15 steps bracketing?! You're really a pro.

Mohammad

At a minimum, the file must be sized for print size and sharpened according to the final output media. Other considerations include using the ICC color profile if one is available from your printer.