Doug Aurand
Posts: 3282
Location: Albuquerque, NM, United States
Registered: 2 Jan 2008
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Re: Best option ?
Posted: 22 Mar 2010 at 17:18 GMT
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Since you can't change the lens's aperature, I doubt you can change it on the camera settings
You just set the Shutter Speed and the bracketing will do what you set in the Bracketing Function
All the instructions I've seen for HDR/Enfuse Bracketing says bracket shutter speed not aperature.
Doug Aurand
Albuquerque, NM
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Itamar Vieira
Posts: 32
Location: Brazil
Registered: 9 Mar 2010
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Re: Best option ?
Posted: 22 Mar 2010 at 17:38 GMT
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Doug,
exactly !
In A mode you fix the aperture and the bracketing is done varying shutter speed.
I guessed I could set the aperture just to let D90 knows what it is. As Sunex is fixed it wouldn't change it of course.
It is not so critical in fisheye lenses because the huge DOF. But it's better to bracket changing shutter speed always, as a rule of thumb.
Accordingly to Francois Pelletier from Sunex, only Nikon D300 is compatible in A and S modes:
Francois Pelletier(Sunex) said: Unfortunately, our
lens will not work in A mode with Nikon D90 and will essentially work only
in Manual mode. For full mode support on Nikon, you need to use body D300
and up. Next generation of products should support all Nikons Bodies.
Regards,
Itamar
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Smooth
Posts: 3729
Location: Mount Panorama, Australia
Registered: 21 Jul 2004
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Re: Best option ?
Posted: 22 Mar 2010 at 17:43 GMT
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You bracket images via Shutter Speed. This is based solely on the internal EV light meter. The meter will work fine as it is reading the amount of light entering the camera (nothing else). Should you choose a shutter speed that matches 0ev it will bracket below and above this setting by the amount the auto-bracketing feature is set at. Moreover, it will bracket below and above whatever you choose the EV starting point to be.
Lets start with say 0ev and you are going to bracket in 1 full ev stops over 3 shots.
-1ev, 0ev, +1ev
Or you may wish to shoot 5 brackets but using -2ev as the starting point.
-4ev, -3ev, -2ev, -1ev, 0ev
Maybe 9 bracketed shots starting at -2ev
-6ev, -5ev, -4ev, -3ev, -2ev, -1ev, 0ev, +1ev, +2ev
It doesn't matter what the chosen aperture setting is or if it is a fixed aperture lens, the light entering is being read by the internal EV light meter and this is what the bracketing is based on.
Regards, Smooth 
www.smooth360.info
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Itamar Vieira
Posts: 32
Location: Brazil
Registered: 9 Mar 2010
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Re: Best option ?
Posted: 22 Mar 2010 at 17:46 GMT
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Smooth,
it was a long time ago I did bracketing in my equipment.
I'm not sure, but to bracket shutter speed you have to set A mode right ?
I think if you set S mode the bracket will be done varying aperture.
As I said, not sure...
Itamar
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Smooth
Posts: 3729
Location: Mount Panorama, Australia
Registered: 21 Jul 2004
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Re: Best option ?
Posted: 22 Mar 2010 at 17:59 GMT
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You must be in "A" Aperture Priority Mode
or
"M" Manual Mode (Recommended).
You cannot use "S" Shutter Priority because it keeps the shutter speed the same and adjusts the Aperture and ISO to meet the required (set) shutter speed.
Note: These "terms/letters" are for Nikon cameras. Canon has TV, AV, P, M etc.
Any true Omnipix panorama shooter has the camera in "M" manual mode all the time.
Regards, Smooth
www.smooth360.info
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Doug Aurand
Posts: 3282
Location: Albuquerque, NM, United States
Registered: 2 Jan 2008
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Re: Best option ?
Posted: 22 Mar 2010 at 18:21 GMT
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"Any true Omnipix panorama shooter has the camera in "M" manual mode all the time."
I've put my Canon on Auto a couple times for simple shots and the screen looks empty
Doug
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