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Panorama mergeEdit

Dear Colin, I have been doing several 360 panoramas in the usual way, using the Chinese nodal head that has been excellent so far. I would like to hear your recommendation about what software (or configuration) to do the photography merge. I have tried Hugin and trial versions of Autopano Pro, PTGui and Photoshop, however, the best results I have obtained has been PTgui (surprising for its sharpness, elimination of ghosts, HDR panorama merge from RAW...) but this software is expensive and I really do not know what free alternative or less expensive could exist. Thank you --Wilfredor (talk) 13:41, 28 June 2019 (UTC)

Hi Wilfredor. Glad the equipment is working well. I have not done 360° panoramas (either regular or HDR) yet, and really should give it a go. Best to ask Code or Diliff about that -- you may need to message them directly as neither are very active here these days. I used Hugin in the past but never could get the HDR to work, though perhaps they have fixed that now. I bought PtGui some years ago and was very pleased to get a free upgrade to the latest version which is a total rewrite and much nicer looking. I have not used its built-in raw conversion. See https://www.ptgui.com/support.html#3_7 -- it is based on DCRaw and I think the results will not be as good as Lightroom or Photoshop CameraRaw can produce if you use 16-bit tiff files. I have generally been impressed with using that to generate HDR 32-bit TIFF files and import them to Lightroom to tonemap for JPG. I haven't played much with its built-in HDR tonemapping, but I think Diliff compared and preferred what Lightroom could do. I have used PtGui quite often for HDR photos even when not panoramic. I can set my Sony to exposure bracket with quite a large range and flexibility. For panoramas it is much better than Lightroom or Photoshop, especially when you can set vertical (and sometimes horizontal) control points, and the choice of projections. In that regard, it is quite similar to Hugin. I have used Lightroom's panorama for modest landscape panoramas, but it simply isn't good enough to use for architectural images. If you can get Hugin to stitch HDR then theoretically the results should be very similar to PtGui. Have you managed this, and was it worse?
I remember that Diliff found that generating 360° HDR sometimes produced a visible join at when the left+right edges meet. I think he solved that by producing two panoramas with different centre points, and then merging the result in Photoshop. That's obviously a lot more hassle and disc space.
Does the trial for PtGui product usable images, or are they watermarked? If you want, you could post your raw files online (public or private e.g. Dropbox) and I could generate the output for you. The file sizes might be large though.
-- Colin (talk) 15:11, 29 June 2019 (UTC)
Hi Colin, thanks for your fast answer like ever, i think that its better if you look the problems by yourself. I uploaded the pano picture here, however it has severals verticals problems and quality problems (I also forgot to photograph the floor, so I'll need to redo it with photoshop). The exposure is not bracked and it was done using trial version of ptgui and removing the watermark. I cant find any valid way to send you 88 pictures in RAW (there were too many people and I had to wait for hours and make several pictures of the same shot), I cant uderestand why the view 360 is not working on commons. I would appreciate any evaluation that you could give to correct the merge problems and the defects of the image in itself that you can find. Thank you --Wilfredor (talk) 03:56, 1 July 2019 (UTC)
Wilfredor, when I open it in panoramic viewer it complains it is not a JPG (it is a PNG). Perhaps you could make a JPG version. -- Colin (talk) 06:55, 2 July 2019 (UTC)
Dear Colin, After observing the line of hundreds of people entering the Notre Dame de Montreal, I decided to walk and go to another church less crowded, the Saint Patrick turned out to be a beautiful surprise, Finally i want to tell you that I fixed the problem adding 14 RAWs files and removing anothers 4 raws (this was the result of removing and adding RAW files until hugin managed to accept the images and merge them in the best way). I decided to do the horizontal sweep manually mainly for speed and to create more points of union (I was not sure which separator to use). There were several people constantly in the church, so I had to repeat the shots several times waiting for them to move. BTW, I have been so impressed by the result, especially the good white balance handling that I plan to upload it in the WLM event (In theory it is not exactly the same image as it incorporates other images inside, but I'm not sure if the jury could accept it) Anyway, the picture has a size of around 150 Mb, I'm looking for some way to share it with you maybe with Amazon storage --Wilfredor (talk) 01:34, 3 July 2019 (UTC)
Wilfredor, very glad to hear that you are so happy with your pano that you think it might win a prize. I suppose you could ask the judges if they think that is valid. Better to make them aware and consider it, than to get a prize and for someone to complain. Are you able to take a regular (non 360°) photo? In addition to file backup sites like Google Drive, Dropbox or Amazon, there are also WeTransfer and Hightail and others that offer some space to transfer files. You know my email address. -- ~~
— Preceding unsigned comment added by Colin (talk • contribs)
I sent you a link by email with the image, please, let me know if you have the e-mail. With respect to the panoramas no 360, I could not make them using the Andoer PH-720B panoramic head because to raise and lower the vertical arm that creates the rows, the jumps are fixed, that is to say the problem that I had previously commented to you. I do not know with which type of lens these vertical fixed jumps will be compatible, however, it look like i could change the vertical steaps 30 dreegres by default. I will try to disarm the panoramic head to see if I can remove that limitation --Wilfredor (talk) 19:14, 5 July 2019 (UTC)
Wilfredor, I got your mail and have downloaded the file. I've been very busy today. I hope to be able to examine it and give feedback tomorrow. -- Colin (talk) 19:43, 5 July 2019 (UTC)
You do not have to answer quickly, you can delay a week if you want. Take your answers in a relaxed way, this is supposed to be fun and not an obligation --Wilfredor (talk) 19:48, 5 July 2019 (UTC)
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