PanoTools:
Re: Practical Depth of Field-10,5mm-f2,8
Bruce 2006-Mar-03 02:15:47
Well Done, Hans!
Especially the 3.3 file. If this is what all my VR's look like, I
could die a happy VRtist. The 10.5 is worth the extra $ and
stitching over the results I've seen from 8mm lenses. It's time I
learn the PTMac workflow for my D70+10.5 combo. Although, to my
dismay, I believe the Canon has more color balance correction with
artificial light than Nikons.
Virtually Yours,
Bruce Christianson
http://www.PhotoLogic.com
"Nothing exists, until it's observed." ——————— bc
On Mar 2, 2006, at 11:53 AM, Hans Nyberg wrote:
> I am not much for theoretical discussions about DOF (Depth of
> Field) as
> it has been at the panotools list for several days.
>
> I am a photographer and to me it is a practical thing and I could not
> care less about mathematical models.
> Sharpness is many thing especially when you work digitally.
> A supersharp image can look unsharp because of lack of contrast and
> digital sharpening can change a lot.
>
> Last Friday I had a job which forced me to use full opening f2,8 on my
> Nikon 10,5mm.
> The focus scale on the 10,5 is not much of a scale so to use it you
> have to do some practical tests first.
> Especially as I use an adapter on the Canon 20D.
> The scale on the 10,5 is very small and a change of 1mm when turning
> it is enough to destroy you calibration.
> So after getting the right setting I taped it.
>
> The subject was a performance by the famous Superkids gymnastics group
> from Aarhus and it was recorded for TV in the Concert Hall in Aarhus.
> Even if there was a lot of lights and lasershow the exposure was only
> 1/40 sec at 2,8 and 800 ASA.
> The scene had enough for 1/100 sec to take extra shots of fast
> movements.
>
> 6 shots around + zenith was used for the stitch and I used an
> additional shot for the scene which was blended in after the stitch.
> My own panohead and PTMac + Enblend
> The large movie is 3,3mb 3000x3000 cubefaces from full resolution
> 5000x10000
> The small movie is 1,7mb 1908x1908 cubefaces from a resized and
> sharpened 3000x6000
> The Tv camera to the left of me is only 1 m from my lens.
>
> http://qtvr.dk/superkids/musikhuset.html
>
> Hans
>
> Hans Nyberg
> commercial photographer
> hans nyberg fotografi
> hasselvej 6 DK-8550 ryomgaard denmark
> <http://www.hans-nyberg.dk>
> <http://www.qtvr.dk>
>
> <http://www.panoramas.dk> Panoramas.dk - Features Fullscreen QTVR
> email: #removed#
>
>
>
>
> Yahoo! Groups Links
>
>
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>
>
>
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