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Of course there is... (that's why this discussion is for)...

1. Make sure that your lens entrance pupil is positioned exactly at the center of the circle of which the tilt arc is part off... This...

Exactly... The theory only includes tilt and swing movements... it doesn't "compensate" for shifts or up-down movements or "parallel planes" as makers do... According to Scheimpflug's law, yaw free...

The wikipedia link I used in the OP has all the drawings you need Randy... Only parameter that has to be considered is that they still ignore the change of the focusing plane's position (although...

Hi Doremus... Nodda has it right I'm affraid... If you intercept a sphere at the same radius but with the center of it decentered to another point, the result plane (after intersecting the same...

Most people think that yaw free operation of a camera is unimportant... They think that if you manage to work around things and have planes focused well enough it's the same...

Others think that...

I mean the lens plane (sorry for the typo on the post before) is always a plane that includes the entrance pupil of the lens as one of the plane's points... And it is always perpendicular to the lens...

Actually to end it... you should read this on the Sinar's statement that you post "... this type of design has the advantage that Scheimpflug´s law is completely satisfied, that is a line through...

No Bob... It doesn't happen with any camera that has base tilts (or other tilts) it only happens with yaw prone systems because the entrance pupil of the lens is not positioned at exactly the center...

why do I suspect that Bob won't be answering any of the above... Nevermind, I may as well ask him some more questions which should follow the above...

If the swing point is on the same axis as the...

More bold statements still... can you please at least answer me if you agree that if a camera is focused (no movements applied) and after movements are applied, focus is lost... does this mean that...

Ohhhh no... not again! Bob why was the Kardan the first yaw free camera? Can you please explain (for once) what makes it yaw free? Please explain the fundamentals behind yaw free operation as I have...

Try shooting the full width of a temple in an 11th century ancient byzantine monastery!

EDIT: square is irrelevant to distortionless

I think you underestimate yaw free operation importance for architectural photography... Other than yaw free being the only way for the photographer to have completely distortionless architectural...

Gosh Bob! You can't patent YAW FREE operation of a camera because no camera by itself can ensure that the result will be yaw free... YAW FREE is a lens positioning matter with respect to the image...

Drew, Sinar was the first that did describe yaw free as being able to have "the swing axis on the tilt plane when both movements are combined", but they "forgot" to mention that the tilt plane IS NOT...

Ιn plain English, your hints are that make me an astonaught that has travelled all over galaxy in secret missions... Open a book on optical theory just to verify that lenses don't rotate on their...

I'm an astronaught (that has traveled all over galaxy in secret missions), as much as cameras become yaw free if the swing point is positioned above the tilt point or if they are side turned by 90...

Hi Greg, yes this is correct... In fact I mentioned it in my very first post in this discussion if you look back... the yaw error with the P system will be less, this is because the tilt's arc radius...

Of course they did... but they choose to invest in Sinar instead of others looking (desperately) for investors... Wouldn't Linhof (of which the importers in US you are business related) be happy to...

No camera is yaw free unless the entrance pupil of the lens is positioned exactly at the center of the circle of which the tilt arc is part of (EDIT: ..and stays there if combined with up-down shifts...

Well, there you are... I guess if one doesn't want to try something else, he will never do... Once I had a conversation with that friend of mine who seemed to be attracting females like honey does...

There are some more that one should consider with the Sinar P-X series of cameras... They all have much the same standards and thus can be converted from one to another by just changing frames and...

Sinar P,P2,P3 & X series of cameras is (by far) the world's most sold camera for professional use... The base of existing cameras exceeds 100K units worldwide and is by far ahead from the next runner...

Hi, As I said before, 8x10 is the easiest way for one to achieve awesome quality, this is due to size and lenses that cope well with it (which is easier to do because the size of the image area makes...

The OP's question is directly related with improvements that have to do with image areas sizes and lens performance on the wider image circles required... Why one should increase from 8x10, if he can...

Hi Tim,

Never said that I've compared directly 8x10 to 120 6x8 film... What I've said, is that Ι've continued to decrease the image area size until it now has reached 120 film of 6x8 size... This...

Hi, I agree that LPPM isn't the only measure of lens quality and that an image quality isn't measured by the size of the enlargement, nor those where ever my claims. What lead me to shrink the size...

Well, this is what theory says and is of course correct if theory is applied, but for theory to apply, there are some constants that are considered and the constant in this theory is that the lens...

8x10's biggest advantage (IMO) is that it is easy to get High Quality out of it, even with inferior scanning methods and with modest resolution lenses... However, if one uses the highest possible...

What format is the optimum for image quality, depends on many different factors... The scanner you use and how much it can resolve is one (the smaller the size of the film, the more demanding the...

...and on mounting distance. There is no way (according to physics) that two lenses of the same focal length, projecting on the same size image area, stopped down to the same aperture and used for...

There are two ways of looking at field of view... One is the FOV that the lens projects, the other is the size of image area you use, only the second is focal length dependent.... Angle of coverage...

He isn't asking Jac... he is entering a further level in the conversation... I think I'll rest with my last post: "I think that if two lenses are mounted in different distance from the image area,...

I think that if two lenses are mounted in different distance from the image area, then the proportion of image area to lens and lens to subject change (and thus DOF does) is far easier for one to...

Actually things are never so complicated... If you mount a (say 37x49) MFDB on the Fuji and then on the Contax, and focus them the same for the same scene, then the Fuji lens "sees" a wider angle...

Aaaah... I now see what you are getting at... Well no... it doesn't work like this, you see when focal length is constant and aperture the same, your pipe's mouth is the same but the liquid entering...

I don't understand the question... my Fuji 210 never had any modification... why should it? Distribution of light is (supposed to be) even across image areas no matter the size of them... for equal...

It's not what I'm saying, but it can be also true if the position of the entrance differs... Don't expect dramatic differences though... it is a proportional change... but it is there.

Only if you use an enlarger... which then reverses the process of capturing and thus reverses the image circle projected from the capturing process (the larger IC is projected as smaller and the...

Yes it will be the same... the supply depends on the pipe diameter and the time the pipe is active... The surface size doesn't change either as to alter reception of supply per area... only the...