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#1 2010-08-19 22:32:35

atuor
Member
From: Vaud, Suisse
Registered: 2009-09-12
Posts: 22

Interrogation Objetctif Grand angle

Bonjour,
J'ai un Olympus EP-1 (Micro 4/3) avec lequel je fais mes Panos (Obj 14-42); maintenant, comme Olympus ont sorti un 9-17 je pense l'acquérir. Maintenant je me pose la question, comme je ne suis ni un 'pro' de la photo ni Expert avec Autopano Pro. j'ai vu que cet objectif corrige apparement les distorsion et je me demande si ça va poser des problème à Autopano Pro; va-t-il reconnaître que l'image est en 'Planar' ? Pourrait-on utiliser AP sur une seule image pour lui rendre l'aspect avec distorsions ? Qqun a-t-il de l'espérience avec ce genre d'objectif ? Désolé si cette question semble un peu 'basic', mais l'achat de cet objectif serait principalement pour l'utilisation avec Autopano Pro. Merci smile


Olympus E-P1 - M. Zuiko 9-18 F4-5.6, 14-42mm F3.5-5.6, 17mm F2.8 Pancake, 14–150mm F4.0–5.6 - Panosaurus Head

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#2 2010-08-21 13:16:07

atuor
Member
From: Vaud, Suisse
Registered: 2009-09-12
Posts: 22

Re: Interrogation Objetctif Grand angle

Bon 1ère expérience avec un objecjtic Grand angle (Panasonic 7-14), pris 2 photos (7mm) dans un magasin , ouvert avec Autopano, il n'a pas réussi à trouver un pano avec ces 2 photos. Serait-ce dû à l'absence de données EXIF ? Ou au fait que cet objectif 'corrige' soit disant les déformations ? Evidemment ces photos ne sont pas à la bonne échelle sur les côtés à cause de ces 'corrections'. Donc je me demande si Autopano serait capable de 'corriger ces correction' et d'assembler tout ça ? Les 2 photos test sont sous : http://www.tuor.net/panos/tmp/P8212586.JPG et http://www.tuor.net/panos/tmp/P8212587.JPG. Si qqun a une bonne idée ou connait un bon lien ;-)

Last edited by atuor (2010-08-21 13:29:27)


Olympus E-P1 - M. Zuiko 9-18 F4-5.6, 14-42mm F3.5-5.6, 17mm F2.8 Pancake, 14–150mm F4.0–5.6 - Panosaurus Head

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#3 2010-08-21 13:35:11

mediavets
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From: Isleham, Cambridgeshire, UK.
Registered: 2007-11-14
Posts: 7690
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Re: Interrogation Objetctif Grand angle

The link to the second image - http://www.tuor.net/panos/tmp/P8212587.JPG - is broken.

There is EXIF data in the first image.


Uploaded Images

Last edited by mediavets (2010-08-21 13:40:03)


Andrew Stephens
Nikon D40, Nikkor 10.5mm fisheye, Sigma 8mm f3.5 fisheye, Nikkor 18-55/50/35mm  lenses, Nodal Ninja 5 Lite, Agno's Mrotator TCSshort
Nikon P5100, CP5000, CP995, FC-E8, WC-E63,WC-E68, TC-E2, Kaidan Kiwi 995, Bophoto pano bracket
Merlin/Orion panohead + Papywizard on Nokia 770/N800 and Windows XP/2K

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#4 2010-08-21 13:36:11

atuor
Member
From: Vaud, Suisse
Registered: 2009-09-12
Posts: 22

Re: Interrogation Objetctif Grand angle

J'ai posté un peu vite... en indiquant que ces photos sont prises en 'Fissheye' ça marche :-)   j'ai trouvé mon bohneur ;-)


Olympus E-P1 - M. Zuiko 9-18 F4-5.6, 14-42mm F3.5-5.6, 17mm F2.8 Pancake, 14–150mm F4.0–5.6 - Panosaurus Head

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#5 2010-08-21 14:01:32

mediavets
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From: Isleham, Cambridgeshire, UK.
Registered: 2007-11-14
Posts: 7690
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Re: Interrogation Objetctif Grand angle

atuor wrote:

J'ai posté un peu vite... en indiquant que ces photos sont prises en 'Fissheye' ça marche :-)   j'ai trouvé mon bohneur ;-)

Then you are doing better than I am - I can't get a decent stitch from those 2 images, with either APG V2.0.9 or 2.5 alpha1.

Can we see your result?


Andrew Stephens
Nikon D40, Nikkor 10.5mm fisheye, Sigma 8mm f3.5 fisheye, Nikkor 18-55/50/35mm  lenses, Nodal Ninja 5 Lite, Agno's Mrotator TCSshort
Nikon P5100, CP5000, CP995, FC-E8, WC-E63,WC-E68, TC-E2, Kaidan Kiwi 995, Bophoto pano bracket
Merlin/Orion panohead + Papywizard on Nokia 770/N800 and Windows XP/2K

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#6 2010-08-21 14:33:10

atuor
Member
From: Vaud, Suisse
Registered: 2009-09-12
Posts: 22

Re: Interrogation Objetctif Grand angle

Well I'm not yet at the 'decent stitch', it was, in a first time, able to stitch them basically, which wasn't the case before; as for the details, it's still far from good, I'd have to test some setting first ;-). PS : I took these picture 'main levée', without paying attention to the nodal point


Olympus E-P1 - M. Zuiko 9-18 F4-5.6, 14-42mm F3.5-5.6, 17mm F2.8 Pancake, 14–150mm F4.0–5.6 - Panosaurus Head

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#7 2010-08-21 15:00:38

atuor
Member
From: Vaud, Suisse
Registered: 2009-09-12
Posts: 22

Re: Interrogation Objetctif Grand angle

Basically I think I should find a way to be able to convert these picture to a 'Fisheye' or Cylyndrical view before assembling, what do you think ? Have you had experience with that kind of lens that 'corrects' distorsions ? It doesn't seem to be adapted for 360 panos

Last edited by atuor (2010-08-21 15:02:28)


Olympus E-P1 - M. Zuiko 9-18 F4-5.6, 14-42mm F3.5-5.6, 17mm F2.8 Pancake, 14–150mm F4.0–5.6 - Panosaurus Head

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#8 2010-08-21 16:14:18

mediavets
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From: Isleham, Cambridgeshire, UK.
Registered: 2007-11-14
Posts: 7690
Website

Re: Interrogation Objetctif Grand angle

atuor wrote:

Basically I think I should find a way to be able to convert these picture to a 'Fisheye' or Cylyndrical view before assembling, what do you think ?

If you shoot RAW and use a non-specific RAW convertor such as DCRAW then I read that the automatic distortion correction is not made on the image.

Have you had experience with that kind of lens that 'corrects' distorsions ? It doesn't seem to be adapted for 360 panos

No, I have no experience of this sort of feature; which as I understand it is a feature of the camera firmware.  It may not be an issue, it would be easier to tell if you had done a shoot with a properly calibrated pano head.

Last edited by mediavets (2010-08-21 16:14:39)


Andrew Stephens
Nikon D40, Nikkor 10.5mm fisheye, Sigma 8mm f3.5 fisheye, Nikkor 18-55/50/35mm  lenses, Nodal Ninja 5 Lite, Agno's Mrotator TCSshort
Nikon P5100, CP5000, CP995, FC-E8, WC-E63,WC-E68, TC-E2, Kaidan Kiwi 995, Bophoto pano bracket
Merlin/Orion panohead + Papywizard on Nokia 770/N800 and Windows XP/2K

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