Tilt sensor

[jotloob]

Can anyone here in the forum please explain in detail
why do digital backs need a TILT SENSOR .

The CFV-39 has the ability to set the TILT SENSOR to either 30 - 60 - 90 degrees or AUTO .

During all my analog shooting time , I have never even heard of the existance of a TILT SENSOR .

Jürgen

 

[polypal]

I do not understand this question especially now that it is coming from you.
You were the first to be confronted with a tilt sensor in the first CFV back you got.
Am I to believe you used that back all that time without knowing what the TS is for?

It is tempting to dream up some bright reason why TSs are fitted to DBs.
I have not got the faintest idea.
Please no more jokes because historically this is subject caused a lot of discomfort for Jürgen.


Paul

 

[jotloob]

Am I to believe you used that back all that time without knowing what the TS is for?
Paul

Who said , that I was using the CFV-16 .
All gear I have is only for display and will never be used .
That is the only way to be shure , your gear will never fail .

Jürgen

 

[jotloob]

Serious answers only

Ok.Ok.

From now on , only serious answers are accepted .

WHY DO WE NEED A TILT SENSOR IN A DIGITAL BACK .

Jürgen

 

[polypal]

Jürgen,


It is quite clear you have lost touch with reality.
The long awaited arrival and still not ended mystery of the current residence of your CFV 39 may be to blame for that.
I happen to know you actuated the CFV16 at least 200.000 times.
That is what I saw on the counter last time I was in Sonthofen.

Your conclusion unused equipment does not fail is not in line with my experience.
The 2000FCW I did not use for more than a year needed a firm hand to come back to life.
Just one example of a long list of similar events.


The TS goes back to the early days of Hasselblad cameras.
1600F cameras, not unknown to you, had problems in that department.
Ansel Adams got an early 1600F to test and write comments about to Hasselblad AB.
The beginning of a long lasting relationship between Hasselblad AB and Ansel Adams.
Mr. Adams is known to report he had problems with the mirror in the 1600F.
The mirror became dislocated during a hill climb when the camera was held upside down.
Designers in Sweden did not have any idea pictures were also being made under other than studio conditions.

So lets see what readers come up with for TS options in DBs.

Paul

 

[rquindry]

My guess for the tilt sensor is so that the image files are tagged to indicate if the camera is rotated for horizontal or vertical orientation so that when they are imported into your favorite raw converter they come in with the proper orientation. DSLR's do this.

The bigger question is why there is one on the original CFV back. It's possible that they are using a circuit board that is used with more than one CCD for economies of scale and that the circuit board includes a tilt sensor on it.

Rich Quindry

 

[bradleygibson]

Rich is quite correct in my experience.

However the camera is held, the orientation should be recorded by the sensor so that the image is always rendered right-side up in the software, without having to manually rotate.

To date, I've only been aware of 90 degree increments, so I am at a loss to explain the intermediate values offered by the back.

Perhaps Paul/HB could chime in on this one...

-Brad

 

[wbulte]

Rich is quite correct in my experience.

However the camera is held, the orientation should be recorded by the sensor so that the image is always rendered right-side up in the software, without having to manually rotate.

To date, I've only been aware of 90 degree increments, so I am at a loss to explain the intermediate values offered by the back.

Perhaps Paul/HB could chime in on this one...

-Brad

Well... in this case we are talking about the CFV here, so the square sensor...

Wilko

 

[stever]

I have a tilt meter in my Jeep for off-roading. That way it I roll over I can tell if I am upside down [wheels to the sky] or not.

Steve

 

[wbulte]

I have a tilt meter in my Jeep for off-roading. That way it I roll over I can tell if I am upside down [wheels to the sky] or not.

Steve

Yeah.. I've driven rentals over in the US equipped with that kind of device. Fascinating.

 

[jotloob]

My 503CW is not a 4 wheel driven device but is fascinating as well .

I think , I will install a TILTSENSOR in my wine glas . Then I always know how much wine is left in the glas . I will adjust the sensor to 30 degrees .

The same applies to bavarian beer mugs .

Jürgen

 

[stever]

My 503CX does not have a tilt meter but my 903 SWC does.

Steve

 

[bradleygibson]

Well... in this case we are talking about the CFV here, so the square sensor...

Wilko

Understood, but if the camera is ever held in another orientation (for whatever reason--space, access to shutter release, who knows...) the orientation sensor would ensure the results come in right side up.

My guess is that some sub-assembly is standardized with an orientation sensor, so every product gets one, "needed" or not. All pure speculation on my part, of course.

 

[jotloob]

Here we finally have the solution for the tilt sensor question .
I have it from the CFV-39 users guide and it took HASSELBLAD only
65 words to explain .

TILT SENSOR (39 Mpix only)

The tilt sensor tags image files according to the orientation of the camera at the time of capture to ensure correct orientation on the display and in PHOCUS . There may be occasions when this is not required - when the camera is pointing straight up or down , for example - and so the tilt lock can be set at various degree settings .

The following options are available :
TILT SENSOR : AUTO
TILT SENSOR : LOCK at zero degrees
TILT SENSOR : LOCK at 90 degrees
TILT SENSOR : LOCK at 180 degrees
TILT SENSOR : LOCK at 270 degrees

Jürgen

 

[polypal]

Hello Jürgen,


I am sure you are a happy camper now knowing the CFV39 also offers a tilt sensor.
You would not accept a DB without that option.

For a change Hasselblad explained what this indispensable tilt sensor is all about.

Have fun!


Paul

 

[jotloob]

For a change Hasselblad explained what this indispensable tilt sensor is all about.
Have fun!
Paul

Yes Paul

And it took only 65 words .

Jürgen

 

[bradleygibson]

Does the sensor offer 0/30/60/90 degrees (as per the original posting) or 0/90/180/270 degrees? Of course the latter makes perfect sense...

 

[jotloob]

Brad

I recall that I read 30/60/90 but that was obviously wrong .
The values 0/90/180/270/auto are correct .

Jürgen