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View Full Version : Question about Technikardan 45 measuring scales

NoBob
15-Mar-2015, 10:16
Hi,

Does anyone know how to use the Technikardan 45 measuring scales, the one on the side and the ones on top of the extendible rails themselves?

Thanks.

Bob Salomon
15-Mar-2015, 10:41
If you are using a Sceimpflug calculator, like the Rodenstock one, you input the angles into the dials of the computer to compute the proper angles.

You also use them when you do a tilt or swing on one standard and want to set the other standard to the same angle.

If you have the original TK then you also use them to determine the 0 position as unlike the second model you do not have tilt detents at the 0 position.

NoBob
15-Mar-2015, 11:03
Thanks Bob, These gauges, the ones I'm looking at, are the ones in cms: the one on the side with the teeth along the top, and the ones on top/inside the rails (there are three of them, one on each rail)? Are they the same ones you're referring to?

Bob Salomon
15-Mar-2015, 12:29
Thanks Bob, These gauges, the ones I'm looking at, are the ones in cms: the one on the side with the teeth along the top, and the ones on top/inside the rails (there are three of them, one on each rail)? Are they the same ones you're referring to?

There are scales on top of each extension rail as well as one on the focusing rail. Then there are tilt and swing scales on the front and rear standards.

I was referring to the tilt/swing scales.

The one on the focusing rail is used to compute the distance between the near and far points of the subject when you are using a calculator like the Rodenstock. Once you enter the near and far points the calculator then indicates the point that the back should be moved to for maximum DOF at the minimum aperture required for that amount of near to far displacement.

The scales on top of the rails are reference scales so you can set the same amount of extension when required.

You can also download a pocket sized DOF calculator at N/C from the Linhof web site which will also work with the scale on the focusing block.

NoBob
15-Mar-2015, 15:16
Thanks Bob,

So whereas Fred Newman splits the difference (https://m.youtube.com/watch?v=2uYCAfXOwJQ) the DOF calculator calculates it more precisely?

Are there any instructions on how to use the downloadable (PDF) table?

Thanks.

Bob Salomon
15-Mar-2015, 15:33
Thanks Bob,

So whereas Fred Newman splits the difference (https://m.youtube.com/watch?v=2uYCAfXOwJQ) the DOF calculator calculates it more precisely?

Are there any instructions on how to use the downloadable (PDF) table?

Thanks.
Aren't the instructions on the card?

NoBob
15-Mar-2015, 20:55
Oh yes! Right at the bottom.

http://www.linhof.de/download/depth-of-field-chart.pdf

Thanks Bob.

NoBob
17-Mar-2015, 01:51
Bob, When focusing on the near and far points, is that done wide open (f/5.6 if that's the widest the lens will go), then stop down to the f stop in the last column?

Bob Salomon
17-Mar-2015, 04:54
Bob, When focusing on the near and far points, is that done wide open (f/5.6 if that's the widest the lens will go), then stop down to the f stop in the last column?

Yes, wide open and then stop down to optimal aperture which is usually 22

NoBob
17-Mar-2015, 04:59
Thanks, does this apply to landscapes and cityscapes? or just more close-up work, studio work, tabletops and alike?

Bob Salomon
17-Mar-2015, 06:36
Thanks, does this apply to landscapes and cityscapes? or just more close-up work, studio work, tabletops and alike?

everythig.