The nodal point is not relevant with the long
lenses we're using on our DSLRs. By balancing the
long lens on the GigaPan Pro the nodal point is
pretty close. I've used a 200mm f/2.8 with the 5D
MK II and a 100-400mm with the Canon 7D. No
problem at all. Even regular pans are no problem
as to nodal point. If you use a normal to
super-wide angle the nodal point becomes critical.
As long as you balance the telephoto lens all is
good. Don't try to over think this whole thing.
Search on George Lepp and look at the GigaPan Pro
image I took this morning at 640mm and a Canon EOS
7D (400mm with 1.6X mag from the smaller sized
sensor.
I was wondering about that whole issue of
alignment with a long lens too. What are the
limits of this pro unit's back offset? Of course
for far field panos it is not such a big deal but
can one use the new pro head with say a 135 or
200mm Canon prime lens? Does anyone know? Cheers,
John
My understanding is that, properly, one should
talk about the null parallax point rather than
nodal points. And that the NPP is about half way
down the lens. But I am no expert. In practice the
NPP is academic because if you are using the lens
at 200mm and beyond then nearly everything that is
going to be in focus is at infinity. Or am I
missing something?
Seems to me that the biggest problem with using
the pro with a long lens is to get the lens nodal
point set accurately especially when subjects are
at varying distances from the camera. It should
rotate about that nodal point which is near the
front element of the lens. I await results eagerly
KR
GigaPan Comments (7)
Toggle Minimize gigapan_commentThe Gigapanographer Currently Known as "Kilgore661" (April 13, 2010, 12:11AM)
You definitely need the Pro for a 5D.
ROBSON LUIZ (April 12, 2010, 05:26PM)
can i use 5d on gigapa epic 100? lens 50mm f1.4 or 100 f 2.8 or 28-80 mm ? or i have to buy the pro ?
George Lepp (March 28, 2010, 06:33PM)
The nodal point is not relevant with the long lenses we're using on our DSLRs. By balancing the long lens on the GigaPan Pro the nodal point is pretty close. I've used a 200mm f/2.8 with the 5D MK II and a 100-400mm with the Canon 7D. No problem at all. Even regular pans are no problem as to nodal point. If you use a normal to super-wide angle the nodal point becomes critical. As long as you balance the telephoto lens all is good. Don't try to over think this whole thing. Search on George Lepp and look at the GigaPan Pro image I took this morning at 640mm and a Canon EOS 7D (400mm with 1.6X mag from the smaller sized sensor.
The Gigapanographer Currently Known as "Kilgore661" (March 27, 2010, 03:19AM)
What is a 'back offset'? Are you asking how finely you can adjust the camera position with the Pro?
John Warkentin (March 26, 2010, 09:30PM)
I was wondering about that whole issue of alignment with a long lens too. What are the limits of this pro unit's back offset? Of course for far field panos it is not such a big deal but can one use the new pro head with say a 135 or 200mm Canon prime lens? Does anyone know? Cheers, John
The Gigapanographer Currently Known as "Kilgore661" (March 22, 2010, 12:57PM)
My understanding is that, properly, one should talk about the null parallax point rather than nodal points. And that the NPP is about half way down the lens. But I am no expert. In practice the NPP is academic because if you are using the lens at 200mm and beyond then nearly everything that is going to be in focus is at infinity. Or am I missing something?
Keith Rodgerson (March 22, 2010, 12:20PM)
Seems to me that the biggest problem with using the pro with a long lens is to get the lens nodal point set accurately especially when subjects are at varying distances from the camera. It should rotate about that nodal point which is near the front element of the lens. I await results eagerly KR