The Widepan *can* do night photography

[RolandRB]

I got it wrong. Although the slowest shutter speed is 1/2 sec, with the
Widepan you can do multiexposures. Just hope the camera and nothing
else has moved inbetween.

Now all I need is the Widepan to arrive from China.

[Ralf R. Radermacher]

RolandRB > wrote:

> Just hope the camera and nothing
> else has moved inbetween.

Ha, ha, ha...

Ralf

--
Ralf R. Radermacher - DL9KCG - Köln/Cologne, Germany
private homepage: http://www.fotoralf.de
manual cameras and photo galleries - updated Jan. 10, 2005
Contarex - Kiev 60 - Horizon 202 - P6 mount lenses

[RolandRB]

It finally arrived from China.

[RolandRB]

It finally arrived from China.

[jjs]

"RolandRB" > wrote in message
oups.com...
> It finally arrived from China.

And next.... photos?

[jjs]

"RolandRB" > wrote in message
oups.com...
> It finally arrived from China.

And next.... photos?

[jjs]

"RolandRB" > wrote in message
oups.com...
> It finally arrived from China.

And next.... photos?

[RolandRB]

Maths first. Maths first always with me. You know that or *should* know
it by now.

Firstly recalculate the focussing distance from the DoF charts and
ignore anything that may be stated in the manual or online manual. From
the DoF values the 3 distances are 13', 20' and 26'. Then determine
infinity focus setting. Easy in this case as infinity will be the same
distance from the 26' line as the 13' line is except the other side.

Have to determine whether it is front cell focussing so I can calculate
the nodal point movement and reduction in horizontal resolution.

Sorry, lots of work to do. It may take months before I put a film in
it.

[RolandRB]

Maths first. Maths first always with me. You know that or *should* know
it by now.

Firstly recalculate the focussing distance from the DoF charts and
ignore anything that may be stated in the manual or online manual. From
the DoF values the 3 distances are 13', 20' and 26'. Then determine
infinity focus setting. Easy in this case as infinity will be the same
distance from the 26' line as the 13' line is except the other side.

Have to determine whether it is front cell focussing so I can calculate
the nodal point movement and reduction in horizontal resolution.

Sorry, lots of work to do. It may take months before I put a film in
it.

[RolandRB]

Maths first. Maths first always with me. You know that or *should* know
it by now.

Firstly recalculate the focussing distance from the DoF charts and
ignore anything that may be stated in the manual or online manual. From
the DoF values the 3 distances are 13', 20' and 26'. Then determine
infinity focus setting. Easy in this case as infinity will be the same
distance from the 26' line as the 13' line is except the other side.

Have to determine whether it is front cell focussing so I can calculate
the nodal point movement and reduction in horizontal resolution.

Sorry, lots of work to do. It may take months before I put a film in
it.

[jjs]

"RolandRB" > wrote in message
oups.com...
> Maths first. Maths first always with me. You know that or *should* know
> it by now.
>
> Firstly recalculate the focussing distance from the DoF charts and
> ignore anything that may be stated in the manual or online manual. From
> the DoF values the 3 distances are 13', 20' and 26'. Then determine
> infinity focus setting. Easy in this case as infinity will be the same
> distance from the 26' line as the 13' line is except the other side.
>
> Have to determine whether it is front cell focussing so I can calculate
> the nodal point movement and reduction in horizontal resolution.
>
> Sorry, lots of work to do. It may take months before I put a film in
> it.

That is just about the silliest thing I ever read. For gosh sakes, take some
friggin pictures and see what the outcome is, or are you the most unusual
photographer who sees only metrics, _regardless of outcomes_?

It's all bull unless you make pictures.

[jjs]

"RolandRB" > wrote in message
oups.com...
> Maths first. Maths first always with me. You know that or *should* know
> it by now.
>
> Firstly recalculate the focussing distance from the DoF charts and
> ignore anything that may be stated in the manual or online manual. From
> the DoF values the 3 distances are 13', 20' and 26'. Then determine
> infinity focus setting. Easy in this case as infinity will be the same
> distance from the 26' line as the 13' line is except the other side.
>
> Have to determine whether it is front cell focussing so I can calculate
> the nodal point movement and reduction in horizontal resolution.
>
> Sorry, lots of work to do. It may take months before I put a film in
> it.

That is just about the silliest thing I ever read. For gosh sakes, take some
friggin pictures and see what the outcome is, or are you the most unusual
photographer who sees only metrics, _regardless of outcomes_?

It's all bull unless you make pictures.

[jjs]

"RolandRB" > wrote in message
oups.com...
> Maths first. Maths first always with me. You know that or *should* know
> it by now.
>
> Firstly recalculate the focussing distance from the DoF charts and
> ignore anything that may be stated in the manual or online manual. From
> the DoF values the 3 distances are 13', 20' and 26'. Then determine
> infinity focus setting. Easy in this case as infinity will be the same
> distance from the 26' line as the 13' line is except the other side.
>
> Have to determine whether it is front cell focussing so I can calculate
> the nodal point movement and reduction in horizontal resolution.
>
> Sorry, lots of work to do. It may take months before I put a film in
> it.

That is just about the silliest thing I ever read. For gosh sakes, take some
friggin pictures and see what the outcome is, or are you the most unusual
photographer who sees only metrics, _regardless of outcomes_?

It's all bull unless you make pictures.

[Matt Clara]

"RolandRB" > wrote in message
oups.com...
> Maths first. Maths first always with me. You know that or *should* know
> it by now.
>

Yeah, I'm like that, too. Get a new kick-ass camera, and I can't wait to do
some math!
Mmmmmmm... math.

--
Regards,
Matt Clara
www.mattclara.com

[Matt Clara]

"RolandRB" > wrote in message
oups.com...
> Maths first. Maths first always with me. You know that or *should* know
> it by now.
>

Yeah, I'm like that, too. Get a new kick-ass camera, and I can't wait to do
some math!
Mmmmmmm... math.

--
Regards,
Matt Clara
www.mattclara.com

[Matt Clara]

"RolandRB" > wrote in message
oups.com...
> Maths first. Maths first always with me. You know that or *should* know
> it by now.
>

Yeah, I'm like that, too. Get a new kick-ass camera, and I can't wait to do
some math!
Mmmmmmm... math.

--
Regards,
Matt Clara
www.mattclara.com

[Peter Chant]

Matt Clara wrote:

>
> "RolandRB" > wrote in message
> oups.com...
>> Maths first. Maths first always with me. You know that or *should* know
>> it by now.
>>
>
> Yeah, I'm like that, too. Get a new kick-ass camera, and I can't wait to
> do some math!
> Mmmmmmm... math.
>

What does he do when he gets a new calculator?

--
http://www.petezilla.co.uk

[Peter Chant]

Matt Clara wrote:

>
> "RolandRB" > wrote in message
> oups.com...
>> Maths first. Maths first always with me. You know that or *should* know
>> it by now.
>>
>
> Yeah, I'm like that, too. Get a new kick-ass camera, and I can't wait to
> do some math!
> Mmmmmmm... math.
>

What does he do when he gets a new calculator?

--
http://www.petezilla.co.uk

[RolandRB]

I took a Widelux as my main camera for a two week trip around Europe
once. I took the friggin pictures assuming the camera was fit for the
job and all the pictures were out of focus since it is fixed-focussed
to about 8 feet. A huge wasted opportunity. Never again.

[RolandRB]

I took a Widelux as my main camera for a two week trip around Europe
once. I took the friggin pictures assuming the camera was fit for the
job and all the pictures were out of focus since it is fixed-focussed
to about 8 feet. A huge wasted opportunity. Never again.

[jjs]

"RolandRB" > wrote in message
oups.com...
>I took a Widelux as my main camera for a two week trip around Europe
> once. I took the friggin pictures assuming the camera was fit for the
> job and all the pictures were out of focus since it is fixed-focussed
> to about 8 feet. A huge wasted opportunity. Never again.

It seems reasonable to test the camera with a roll or two first, but I can't
see why one must spend "months" doing mathematical estimates as to how it
may perform. Take some pictures to be sure there are no hidden issues.

[Neil Gould]

Recently, jjs > posted:

> "RolandRB" > wrote in message
> oups.com...
>> I took a Widelux as my main camera for a two week trip around Europe
>> once. I took the friggin pictures assuming the camera was fit for the
>> job and all the pictures were out of focus since it is fixed-focussed
>> to about 8 feet. A huge wasted opportunity. Never again.
>
> It seems reasonable to test the camera with a roll or two first, but
> I can't see why one must spend "months" doing mathematical estimates
> as to how it may perform. Take some pictures to be sure there are no
> hidden issues.
>
Or... "a picture is worth a thousand equations". ;-)

Neil

[jjs]

"Peter Chant" > wrote in message
...
> Matt Clara wrote:
>
>>
>> "RolandRB" > wrote in message
>> oups.com...
>>> Maths first. Maths first always with me. You know that or *should* know
>>> it by now.
>>>
>>
>> Yeah, I'm like that, too. Get a new kick-ass camera, and I can't wait to
>> do some math!
>> Mmmmmmm... math.
>>
>
> What does he do when he gets a new calculator?

He tries to take pictures with it.
Frankly, I don't believe RolandRB has the camera in question.

[jjs]

"Peter Chant" > wrote in message
...
> Matt Clara wrote:
>
>>
>> "RolandRB" > wrote in message
>> oups.com...
>>> Maths first. Maths first always with me. You know that or *should* know
>>> it by now.
>>>
>>
>> Yeah, I'm like that, too. Get a new kick-ass camera, and I can't wait to
>> do some math!
>> Mmmmmmm... math.
>>
>
> What does he do when he gets a new calculator?

He tries to take pictures with it.
Frankly, I don't believe RolandRB has the camera in question.

[RolandRB]

"months" was an exaggeration. It was just a case of finding the time.
I've done the maths now. I wanted to calculate what would happen to the
horizontal resolution at the three marked distances and also if set to
infinity if the whole lens was being shifted laterally moving the
secondary principal point off the axis. Then I take the photos and
compare actual results with calculated results.

The lens does indeed move laterally and is not front-cell focussing. If
the whole lens is moved without internal adjustment and the secondary
principal point is moving off the axis then this will be the result for
maximum horizontal resolution, assuming the secondary principal point
for the marked mid-point is exactly on the axis.

near (13') = 7 lp/mm
mid (20') = max lp/mm
far (26') = 16 lp/mm
inf = 3.7 lp/mm

[RolandRB]

"months" was an exaggeration. It was just a case of finding the time.
I've done the maths now. I wanted to calculate what would happen to the
horizontal resolution at the three marked distances and also if set to
infinity if the whole lens was being shifted laterally moving the
secondary principal point off the axis. Then I take the photos and
compare actual results with calculated results.

The lens does indeed move laterally and is not front-cell focussing. If
the whole lens is moved without internal adjustment and the secondary
principal point is moving off the axis then this will be the result for
maximum horizontal resolution, assuming the secondary principal point
for the marked mid-point is exactly on the axis.

near (13') = 7 lp/mm
mid (20') = max lp/mm
far (26') = 16 lp/mm
inf = 3.7 lp/mm

[RolandRB]

I bought it on ebay. I don't know if this link will work.

http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&rd=1&item=3874158826