bob_salomon3

Neither the Apo Sironar S nor the Apo Sironar W were designed to

photograph 2 dimensional charts at close range. They were designed for 1:5

to infinity of 3 dimensional subjects. The Apo Ronar was developed to

photograph flat field originals, like charts, at close range.

As for Sinar's comments they could predate the avaiability of the Apo Sironar

S which replaced the Apo Sironar W series.

"Someone else will chime in but I believe you will need the wide angle

focusing device to use a 75mm"

Nope. Just a recessed lensboard.

"However I am looking for the coverage in real life as opposed to spec sheets"

318mm at f22. That is the coverage. Go beyond this and the light fall off is just

too great - unless you overlight the edges of the scene which is not easy

doing landscapes. A 48° coverage lens at 360mm is simply not long enough

for what you want. The 210mm Apo Sironar S has an image circle at infinity at

f22 just 2mm smaller then the 300 Apo Ronar. That is the advantage of a 75°

coverage lens. The drawback is that it has more glass, is larger and heavier.

used at 1:1 it more then covers.

If you have the NiCd battery for the 60 series get the Gel Cell battery.

Or simply get rid of the memory effect by discharging the pack, under the

proper load, and recharging it 3 or 4 times.

"Prontor made a cable release with a dial type timer"

This was not a self-timer. It was for long exposures. It timed exposures from 2

to 32 seconds. And then closed the shutter after the exposure. The shutter

was set at "B".

"Base tilt cameras are yaw free. You get yaw distortion if you use tilt and

swing movements at the same time."

Not so.

A camera is yaw free when it has a tilt point BENEATH the swing point. For

instance the old Linhof Kardan B had both base and center tilts and was not

yaw free. The current GT and GTL Kardan cameras are yaw free because the

base tilt on these cameras is beneath the swing point.

Most yaw free cameras have a lower tilt point that is used to align the camera

after tilting the rail. The camera then uses a second tilt mechanism for

adjustments to the image. In the case of a GT the second tilt is on axis, in the

case of the GTL it is continuously assymetric, in the case of the Sinar P system

it is assymetric.

What kind of tilt does not make the camera yaw free, Where the tilt is does.

In any case any camera that is yaw prone becomes yaw free when swung

over 90° and used on its side. Any camera that is yaw free becomes yaw

prone when swung on its side.

And no one can tell if a photograph was made with a yaw free or yaw prone

camera and the vast majority of all large format cameras are taken with a yaw

prone camera.

Having represented the manufacturer of the world's first yaw free camera

(Linhof Kardan) for almost 24 years I can tell you that it really isn't the first

thing you should look for in a camera.

Haven't tested a Dagor in almost 30 years. It did very well as a copy lens vs

Sironars and Symmars and very poorl compared to them for product work.

Yes, We do comparison tests as part of service when one has a problem with

their lens.

We have also seen the massive comparison test done by Rod at Photomark.

"Wonder how Linhof selects their lenses. I don't think they just pick up lenses

from Schneider and Rodenstock and then put on Linhof label. They must do

some kind(s) of tests to select lenses to meet their own specs."

Linhof uses the Rodenstock Siemens Star projector for their tests. This

essentially duplicates the Rodenstock QC test. Sinar also uses the same

projector.

I seem to remember that it was the connector on Prontor and Compur shutters

originally. Hence PC.

BiPost were used on some American made shutters and ASA post on other

American shutters like the one on the original Polaroid 95 camera. Other

unique versions include the locking Rollei PC tip (different length tip then

standard PC), the Rollei A26/C26 connection, Leica connector on IIIF and M3

models and a dedicated one used on a small Sony digital camera.

"your shadows will have an open look to them that is just not possible with the

new heavily coated lens."

Seems like you are stating a fact. Instead of your opinion without a factual

basis

Why don'y you actually do a test and see how right or wrong your opinion is.

then you can make a statement factually.

Steve,

You made a statement regarding performance. You have not explained why.

Nor have you even indicated a basis for the statement.

If others, not as experienced, read the claim they might think it factual. It does

not appear to be so.

It has nothing to do with science. Just fact.

Steve,

In other words you have not made any direct comparison but are sure you

know what the results of such a comparison would be?

That is not a strong position to make an empirical statement from.

"your shadows will have an open look to them that is just not possible with the

new heavily coated lens. Just another view"

Why?

Have you tried it in a direct comparison with each of the 4 major

manufacturers with each of their designs?

"Why do people use a Rolls Royce when a volkswagon will get them to the

same place."

Don't forget. VW owns Rolls Royce now and the new V12 VW is about

$96,000.00 U.S.

" a circular ring near the hole where the plunger extends from, that when

turned, will allow the plunger the remain depressed for as long as needed. "

This is called a Zeiss Disk Lock. The real one requires more then a slight turn

to lock it in the open or closed position. Gepe-Pro has PVC, Cloth and steel

sporal covered releses up to 40" long with the Zeiss Disk Lock.

" 1.how to focus this camera,is it like a rangefinder camera?"

No it is zone focusing although Linhof showed a prototype groundglass

focusing system at Photokina.

"2.how is the quility when compare to Hass 903SWC or Rollei 40mm

Superangulon?"

How do you compare a 6x6 cm image to a 6x17cm image? You can't. You

want extreme wide on a square use hasselblad or Rollei. You want a

sweeping panoramic that is 3 times as wide use the 617. The question is

comparing apples to oranges.

" 3. can it be handhold,though I know best results is from tripod?"

Yes it can easily be used handheld. I've used it handheld in high winds

overlooking San Francisco bay from the bluffs on the Marin County side and

made 60" wide prints as well as in Death Valley and Arches and Dead Horse

Point hand held and made 60" prints. No problem.

Of course I am in my 60's so you may have trouble doing hand held work with

it if you are younger (G).

"210mm is Schneider always be sharper then the Rodenstock"

Nonsense. Take 10 of each and test them all at the same time and you will

probably find that each brand wins about half of the tests. And then there is

always the question of are you comparing identical shots taken on the same

film, at the same time and processed the same, at the same time?

Or are these of different things at different times on different films?

"Ansel Adams, Edward Weston, and a very large host of other great

photographers never had these modern lenses"

That's obvious. Today's modern lenses were not available then. They had the

choice of what was then modern lenses. Fortuantly modern keeps changing.

None of them had the possibility to correspond the way you are now.

But then look at waht Sexton, Barnbaum, McGrath and others use today.

And, before you get to uptight, one uses Nikon, one uses Schneider and one

uses Rodenstock. But all use modern lenses.

The problem is parallalism. If the surface of the filter is not perfectly flat. And if

the surface is not absolutely parallal to the lens you will materially effect the

performance of the lens. And by parallal we are not talking about what you

can measure with a bubble level or a ruler. You need much finer measuring

techniques and tools then that.

You are far better off buying some sort of clamp-on adapter.

My refrence sources list it as a 49mm with 0.75 pitch threads and 51mm push-

on. Are you sure of the size?

Heliopan does list the lens so they do make filters for it. So do most other

companies as this is a common size.

Yes, you push the small chrome button on the back while rotating. However if

you have a very old version. Say a V or earlier (1976 to 1946), or even an

early Master, it may need cleaning if it has not been rotated for a while.

Which plate?

The one for the current 45 Anatomical Grip? Or an older version? The plates

are different. As are the old and new plates for the 69 camera and the 57

camera.

Marflex is the source in the U.S. just call again and ask Martin.