subject:"Re\: BSI \- film speed system etc"

Re: BSI - film speed system etc

2006-10-21 Thread P. J. Alling

You misunderstand, I'm speaking about the notation.

For example Kodachrome 64

ASA = 64 
DIN = 19º
ISO = 64/19º

it works for all film speeds of course

ASA = 100
DIN = 21º
ISO = 100/21º

ASA = 400
DIN = 27º
ISO = 400/27º

The international standards organization happily took both notations in 
general use and combined them into one. 

ASA is easier to relate to shutter speeds and apertures once you 
understand them but that wasn't my point.


Jens Bladt wrote:

>N...
>ASA - doubleing the values means halving the shutter time - a numeric/linear
>scale.
>DIN is a logarithmic scale - 3 DIN means twice or half as much light.
>It's true that Scheiner and Weston are 1/3 stops apart.
>http://home6.inet.tele.dk/haagen/ei.htm
>
>This table does not mention BSI.
>
>
>Jens Bladt
>http://www.jensbladt.dk
>+45 56 63 77 11
>+45 23 43 85 77
>Skype: jensbladt248
>
>-Oprindelig meddelelse-
>Fra: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] vegne af P. J.
>Alling
>Sendt: 19. oktober 2006 19:34
>Til: Pentax-Discuss Mail List
>Emne: Re: BSI - film speed system etc
>
>
>Yes but they don't bother telling you that ASA = BSI = ISO and that ISO
>is just the combination of the ASA value and the DIN value in a single
>notation, (and most people just leave off the DIN value).
>
>Bob W wrote:
>
>  
>
>>BSI and ASA apparently used the same numbering system, according to
>>this web page:
>>http://www.photographytips.com/page.cfm/1591
>>
>>BSI was obviously superior in all other respects, of course.
>>
>>That looks like a nice camera. I'd like one of those sometime.
>>
>>--
>>Cheers,
>>Bob
>>
>>
>>
>>
>>
>>>-Original Message-
>>>From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
>>>Behalf Of Jens Bladt
>>>Sent: 18 October 2006 21:56
>>>To: Pentax-Discuss Mail List
>>>Subject: OT: BSI - film speed system etc
>>>
>>>Is this fairly the same as ASA/ISO?
>>>I recently got this 1955 Agifold camera. The extinction
>>>meter/calculator has
>>>SCH (Scheiner-Grad) and BSI (Brittish Standard Institute)
>>>film speed scale.
>>>I wonder if BSI is equal to ASA?
>>>Please take a look:
>>>http://www.flickr.com/photos/bladt/273145251/
>>>
>>>Does anyone here have experiences with Ensign 820 (6x9) or
>>>Ensign Autorange/
>>>Ensifn 16-20  (645), please?
>>>Thanx
>>>Regards
>>>
>>>Jens Bladt
>>>http://www.jensbladt.dk
>>>
>>>--
>>>No virus found in this outgoing message.
>>>Checked by AVG Free Edition.
>>>Version: 7.1.408 / Virus Database: 268.13.5/482 - Release
>>>Date: 10/18/2006
>>>
>>>
>>>--
>>>PDML Pentax-Discuss Mail List
>>>PDML@pdml.net
>>>http://pdml.net/mailman/listinfo/pdml_pdml.net
>>>
>>>
>>>
>>>
>>>  
>>>
>>
>>
>>
>>
>
>
>--
>Things should be made as simple as possible -- but no simpler.
>
>   --Albert Einstein
>
>
>
>--
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>PDML@pdml.net
>http://pdml.net/mailman/listinfo/pdml_pdml.net
>--
>No virus found in this incoming message.
>Checked by AVG Free Edition.
>Version: 7.1.408 / Virus Database: 268.13.7/488 - Release Date: 10/19/2006
>
>--
>No virus found in this outgoing message.
>Checked by AVG Free Edition.
>Version: 7.1.408 / Virus Database: 268.13.8/489 - Release Date: 10/20/2006
>
>
>  
>


-- 
Things should be made as simple as possible -- but no simpler.

--Albert Einstein



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RE: BSI - film speed system etc

2006-10-21 Thread Jens Bladt

N...
ASA - doubleing the values means halving the shutter time - a numeric/linear
scale.
DIN is a logarithmic scale - 3 DIN means twice or half as much light.
It's true that Scheiner and Weston are 1/3 stops apart.
http://home6.inet.tele.dk/haagen/ei.htm

This table does not mention BSI.


Jens Bladt
http://www.jensbladt.dk
+45 56 63 77 11
+45 23 43 85 77
Skype: jensbladt248

-Oprindelig meddelelse-
Fra: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] vegne af P. J.
Alling
Sendt: 19. oktober 2006 19:34
Til: Pentax-Discuss Mail List
Emne: Re: BSI - film speed system etc


Yes but they don't bother telling you that ASA = BSI = ISO and that ISO
is just the combination of the ASA value and the DIN value in a single
notation, (and most people just leave off the DIN value).

Bob W wrote:

>BSI and ASA apparently used the same numbering system, according to
>this web page:
>http://www.photographytips.com/page.cfm/1591
>
>BSI was obviously superior in all other respects, of course.
>
>That looks like a nice camera. I'd like one of those sometime.
>
>--
>Cheers,
> Bob
>
>
>
>>-Original Message-
>>From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
>>Behalf Of Jens Bladt
>>Sent: 18 October 2006 21:56
>>To: Pentax-Discuss Mail List
>>Subject: OT: BSI - film speed system etc
>>
>>Is this fairly the same as ASA/ISO?
>>I recently got this 1955 Agifold camera. The extinction
>>meter/calculator has
>>SCH (Scheiner-Grad) and BSI (Brittish Standard Institute)
>>film speed scale.
>>I wonder if BSI is equal to ASA?
>>Please take a look:
>>http://www.flickr.com/photos/bladt/273145251/
>>
>>Does anyone here have experiences with Ensign 820 (6x9) or
>>Ensign Autorange/
>>Ensifn 16-20  (645), please?
>>Thanx
>>Regards
>>
>>Jens Bladt
>>http://www.jensbladt.dk
>>
>>--
>>No virus found in this outgoing message.
>>Checked by AVG Free Edition.
>>Version: 7.1.408 / Virus Database: 268.13.5/482 - Release
>>Date: 10/18/2006
>>
>>
>>--
>>PDML Pentax-Discuss Mail List
>>PDML@pdml.net
>>http://pdml.net/mailman/listinfo/pdml_pdml.net
>>
>>
>>
>>
>
>
>
>


--
Things should be made as simple as possible -- but no simpler.

--Albert Einstein



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No virus found in this incoming message.
Checked by AVG Free Edition.
Version: 7.1.408 / Virus Database: 268.13.7/488 - Release Date: 10/19/2006

--
No virus found in this outgoing message.
Checked by AVG Free Edition.
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Re: BSI - film speed system etc

2006-10-19 Thread P. J. Alling

Yes but they don't bother telling you that ASA = BSI = ISO and that ISO 
is just the combination of the ASA value and the DIN value in a single 
notation, (and most people just leave off the DIN value).

Bob W wrote:

>BSI and ASA apparently used the same numbering system, according to
>this web page:
>http://www.photographytips.com/page.cfm/1591
>
>BSI was obviously superior in all other respects, of course.
>
>That looks like a nice camera. I'd like one of those sometime.
>
>--
>Cheers,
> Bob 
>
>  
>
>>-Original Message-
>>From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On 
>>Behalf Of Jens Bladt
>>Sent: 18 October 2006 21:56
>>To: Pentax-Discuss Mail List
>>Subject: OT: BSI - film speed system etc
>>
>>Is this fairly the same as ASA/ISO?
>>I recently got this 1955 Agifold camera. The extinction 
>>meter/calculator has
>>SCH (Scheiner-Grad) and BSI (Brittish Standard Institute) 
>>film speed scale.
>>I wonder if BSI is equal to ASA?
>>Please take a look:
>>http://www.flickr.com/photos/bladt/273145251/
>>
>>Does anyone here have experiences with Ensign 820 (6x9) or 
>>Ensign Autorange/
>>Ensifn 16-20  (645), please?
>>Thanx
>>Regards
>>
>>Jens Bladt
>>http://www.jensbladt.dk
>>
>>--
>>No virus found in this outgoing message.
>>Checked by AVG Free Edition.
>>Version: 7.1.408 / Virus Database: 268.13.5/482 - Release 
>>Date: 10/18/2006
>>
>>
>>-- 
>>PDML Pentax-Discuss Mail List
>>PDML@pdml.net
>>http://pdml.net/mailman/listinfo/pdml_pdml.net
>>
>>
>>
>>
>
>
>  
>


-- 
Things should be made as simple as possible -- but no simpler.

--Albert Einstein



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Re: BSI - film speed system etc

2006-10-19 Thread Privé

Op Thu, 19 Oct 2006 03:13:30 +0200 schreef graywolf  
<[EMAIL PROTECTED]>:

> BSI was, I believe, the same as Weston. If so, it is 1/3 stop off from
> ASA, I forget which way.

According to wikipedia, Scheiner-Grad is DIN minus 10. That'd make SCH33°  
equivalent to DIN23°, or ASA 160. Indeed 1/3 of a stop off BSI 125.

See 

Nice camera :o)

Regards, Lucas

> Bob W wrote:
>> BSI and ASA apparently used the same numbering system, according to
>> this web page:
>> http://www.photographytips.com/page.cfm/1591
>>
>> BSI was obviously superior in all other respects, of course.
>>
>> That looks like a nice camera. I'd like one of those sometime.
>>
>> --
>> Cheers,
>>  Bob
>>
>>> -Original Message-
>>> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
>>> Behalf Of Jens Bladt
>>> Sent: 18 October 2006 21:56
>>> To: Pentax-Discuss Mail List
>>> Subject: OT: BSI - film speed system etc
>>>
>>> Is this fairly the same as ASA/ISO?
>>> I recently got this 1955 Agifold camera. The extinction
>>> meter/calculator has
>>> SCH (Scheiner-Grad) and BSI (Brittish Standard Institute)
>>> film speed scale.
>>> I wonder if BSI is equal to ASA?
>>> Please take a look:
>>> http://www.flickr.com/photos/bladt/273145251/
>>>
>>> Does anyone here have experiences with Ensign 820 (6x9) or
>>> Ensign Autorange/
>>> Ensifn 16-20  (645), please?
>>> Thanx
>>> Regards
>>>
>>> Jens Bladt
>>> http://www.jensbladt.dk

-- 
Lucas


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RE: BSI - film speed system etc

2006-10-18 Thread Jens Bladt

Thanks, Bob. I have now changed my description. An  Agifold will normally go
for 20-30 GB.
I haven't done any shootig with it yet. But I will. I'd like to have a 6x6
folder in my 35mm camera back for  just in case. I have been bidding for a
Ensign 820 and 1220 (6x9 ans 645) - but these are quite expensive ...
Jens Bladt
http://www.jensbladt.dk
+45 56 63 77 11
+45 23 43 85 77
Skype: jensbladt248

-Oprindelig meddelelse-
Fra: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] vegne af Bob W
Sendt: 18. oktober 2006 23:19
Til: 'Pentax-Discuss Mail List'
Emne: RE: BSI - film speed system etc


BSI and ASA apparently used the same numbering system, according to
this web page:
http://www.photographytips.com/page.cfm/1591

BSI was obviously superior in all other respects, of course.

That looks like a nice camera. I'd like one of those sometime.

--
Cheers,
 Bob

> -Original Message-
> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
> Behalf Of Jens Bladt
> Sent: 18 October 2006 21:56
> To: Pentax-Discuss Mail List
> Subject: OT: BSI - film speed system etc
>
> Is this fairly the same as ASA/ISO?
> I recently got this 1955 Agifold camera. The extinction
> meter/calculator has
> SCH (Scheiner-Grad) and BSI (Brittish Standard Institute)
> film speed scale.
> I wonder if BSI is equal to ASA?
> Please take a look:
> http://www.flickr.com/photos/bladt/273145251/
>
> Does anyone here have experiences with Ensign 820 (6x9) or
> Ensign Autorange/
> Ensifn 16-20  (645), please?
> Thanx
> Regards
>
> Jens Bladt
> http://www.jensbladt.dk
>
> --
> No virus found in this outgoing message.
> Checked by AVG Free Edition.
> Version: 7.1.408 / Virus Database: 268.13.5/482 - Release
> Date: 10/18/2006
>
>
> --
> PDML Pentax-Discuss Mail List
> PDML@pdml.net
> http://pdml.net/mailman/listinfo/pdml_pdml.net
>
>


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--
No virus found in this incoming message.
Checked by AVG Free Edition.
Version: 7.1.408 / Virus Database: 268.13.5/482 - Release Date: 10/18/2006

--
No virus found in this outgoing message.
Checked by AVG Free Edition.
Version: 7.1.408 / Virus Database: 268.13.5/482 - Release Date: 10/18/2006


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Re: BSI - film speed system etc

2006-10-18 Thread graywolf

BSI was, I believe, the same as Weston. If so, it is 1/3 stop off from 
ASA, I forget which way.


Bob W wrote:
> BSI and ASA apparently used the same numbering system, according to
> this web page:
> http://www.photographytips.com/page.cfm/1591
> 
> BSI was obviously superior in all other respects, of course.
> 
> That looks like a nice camera. I'd like one of those sometime.
> 
> --
> Cheers,
>  Bob 
> 
>> -Original Message-
>> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On 
>> Behalf Of Jens Bladt
>> Sent: 18 October 2006 21:56
>> To: Pentax-Discuss Mail List
>> Subject: OT: BSI - film speed system etc
>>
>> Is this fairly the same as ASA/ISO?
>> I recently got this 1955 Agifold camera. The extinction 
>> meter/calculator has
>> SCH (Scheiner-Grad) and BSI (Brittish Standard Institute) 
>> film speed scale.
>> I wonder if BSI is equal to ASA?
>> Please take a look:
>> http://www.flickr.com/photos/bladt/273145251/
>>
>> Does anyone here have experiences with Ensign 820 (6x9) or 
>> Ensign Autorange/
>> Ensifn 16-20  (645), please?
>> Thanx
>> Regards
>>
>> Jens Bladt
>> http://www.jensbladt.dk
>>
>> --
>> No virus found in this outgoing message.
>> Checked by AVG Free Edition.
>> Version: 7.1.408 / Virus Database: 268.13.5/482 - Release 
>> Date: 10/18/2006
>>
>>
>> -- 
>> PDML Pentax-Discuss Mail List
>> PDML@pdml.net
>> http://pdml.net/mailman/listinfo/pdml_pdml.net
>>
>>
> 
> 

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RE: BSI - film speed system etc

2006-10-18 Thread Bob W

BSI and ASA apparently used the same numbering system, according to
this web page:
http://www.photographytips.com/page.cfm/1591

BSI was obviously superior in all other respects, of course.

That looks like a nice camera. I'd like one of those sometime.

--
Cheers,
 Bob 

> -Original Message-
> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On 
> Behalf Of Jens Bladt
> Sent: 18 October 2006 21:56
> To: Pentax-Discuss Mail List
> Subject: OT: BSI - film speed system etc
> 
> Is this fairly the same as ASA/ISO?
> I recently got this 1955 Agifold camera. The extinction 
> meter/calculator has
> SCH (Scheiner-Grad) and BSI (Brittish Standard Institute) 
> film speed scale.
> I wonder if BSI is equal to ASA?
> Please take a look:
> http://www.flickr.com/photos/bladt/273145251/
> 
> Does anyone here have experiences with Ensign 820 (6x9) or 
> Ensign Autorange/
> Ensifn 16-20  (645), please?
> Thanx
> Regards
> 
> Jens Bladt
> http://www.jensbladt.dk
> 
> --
> No virus found in this outgoing message.
> Checked by AVG Free Edition.
> Version: 7.1.408 / Virus Database: 268.13.5/482 - Release 
> Date: 10/18/2006
> 
> 
> -- 
> PDML Pentax-Discuss Mail List
> PDML@pdml.net
> http://pdml.net/mailman/listinfo/pdml_pdml.net
> 
> 


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Re: BSI - film speed system etc

RE: BSI - film speed system etc

Re: BSI - film speed system etc

Re: BSI - film speed system etc

RE: BSI - film speed system etc

Re: BSI - film speed system etc

RE: BSI - film speed system etc

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