Can you offer a set of the 'offending' images on-line so we could download them to take a look at them and attempt a stitch?

my immediate guess would be you are trying to display images that have Adobe RGB color profiles. You need to convert the Tiff files to sRGB colorspace before they will display correctly in most browsers.

Having in mind Karen used only one word to actually describe the problem - "terrible", I'd say wait for a sample of the input images before any further speculation

DragonVR wrote:

Hi,

I thought I would post before I lose more hair.  The experience on this website is truly amazing.  I have only been using APG and APT for a short time and I must be doing something silly.  I was wondering if I could get someone to look at my work flow and tell me where I can be going wrong.  I use a D300 with 10.5 FE lens with a NNinja3 set to 60 degrees and shoot nadir/zenith and handheld nadir.  Import as RAW into Lightroom where I stack my shots and process them.  I export TIFF.  I then use APG where I set 10.5 FE setting and usually set JPG export quality to 10-12 and have played with DPIs of 72-300.  My problem is that my stitched pano and therefore PTT Flash output look terrible.  All my software is successfully registered.  I have tried inputing PDFs, and JPGs into APG without any change in quality.  The thumbnails alone look terrible on APG, but thought that was probably that way on purpose.  I tried inputting PDFs and increasing from 8bits to 16bits for more color depth, but see no difference.  After spending so much time processing my pics, to have them look so grainy and washed out in the pano and the ensuing tour is breaking my heart.  What am I doing wrong???

Thank you for any wisdom you can throw my way!
-Karen

Forget any profile. Forget PDF with panos. Calibrate your system to be sure what your display displays. There are sites on the web to do so. Switch off any in-camera processing. Show examples here. Buy a good book dealing with image processing - in special regarding stitching.
Impossible to talk about here without seeing what you´re talking about there . . . . .

best, Klaus

Last edited by klausesser (2010-02-17 12:44:48)

Hi everyone,

I was experiencing a similar issue as Karen. APP did an amazing job in stitching but color rendition of the panorama was very poor. All panos had a yellow-greenish cast and all colors looked very washed out and flat.

This color degradation was introduced during the stitching process as the source file in the APP groups window looked fine.
Neither color correction nor change of color anchors seemed to help.

All source files were preprocessed in Lightroom and exported as tiff or jpg in ProPhotoRGB. My screen is calibrated using i1.

Thanks to the the hint from hankkarl I tried to export the files in sRGB and this does the trick! Now the panos have the same color appearance as the source files. Please see the attachment. I am not sure if this behaviour is due to color management or a defect in APP.

However, the APP development team should at least put a note out on the web or in the documentation. I was about to abolish APP despite its fabulous stitching capabilities as those washed out panos were of no use to me.

Wolfgang

wolfganghuber wrote:

All source files were preprocessed in Lightroom and exported as tiff or jpg in ProPhotoRGB. My screen is calibrated using i1.

your second image just is a bit over-saturated. Why do you use ProPhotoRGB?
The color-range via the web is limited - absolutely no need to choose the very wide ProPhotoRGB.

When working on web-related photography you better should set your complete workflow to sRGB-calibration.

Because the browsers are unable to interprete ProPhotoRGB or AdobeRGB and other wide spaces the colors in a browser look pale when you use theses spaces - that´s not related to APG but to all photography in browsers.

Using the sRGB range as workflow (system/display) you come close to what´s displayed via the web.

You can use ProPhotoRGB while editing the pictures BEFORE the stitching process. But you should save the results as sRGB - or without ANY profile.

Essential is to have your display NOT calibrated to a color-space which browsers can´t read!
Like ProPhotoRGB . . .

best, Klaus

Last edited by klausesser (2010-03-11 13:04:45)

hankkarl wrote:

The bigger issue is that displays don't display the full gamut of colors in ProPhoto.

That´s why i still have a prof. CRT hardware calibrated for final control

best, Klaus

Last edited by klausesser (2010-03-11 15:29:07)

wolfganghuber wrote:

So I guess in the situation where I'd really need a wider gamut I could try some more advanced color management techniques to reassign the correct color space.

If you need a wide color range: use TIFF for APG and render as 16bit TIFF.


"Now that I now that APP works best with sRGB"

Nobody said that. Depends on what you want to do resp. what´s your goal: web or print.

For the web sRGB is sufficient.

For print it depends on how you want to print: inkjet at home, offset for newspapers/magazins/flyers/books or art-printig with Lambda or fine-art-ink.

All of them need a different workflow.

For web and home printing on usual inkprinters and for the printservice in a copyshop next door you should use sRGB.

For all other ways to print: it´s individual.

best, Klaus