Talk:120 film

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[edit] Reason for the name?

Who gave 120 film the name "120" and why?

Kodak did, and the number was arbitrary: they started with 101, and it was the 20th film size they'd introduced. Shalom S. 01:50, 9 November 2007 (UTC)

[edit] 120 and 220

What is the difference between 120 and 220, exactly?

How many exposures?

220 is 120 without paper tape this allow to double the lenght of the film but the camera must have a frame counter and must be absoltely light-proof, this is not the case of most the folders that have a hole with a red filter to see the numbers on the paper tape.
User:Ericd

[edit] Hasselblad and Rolleiflex

User:Ericd removed the following passage:

- The cameras that introduced the medium format to the professional photographer, and established the 120 as the medium format of choice, was the Hasselblad and the Rolleiflex.

My comment is: On the grounds that it is inexact? Why? I could perhaps agree wrt. the Rollei, but the Hassy surely set a standard that should be mentioned... Also, there should be a link from 120 to some cameras that use it, I think...

Egil 11:53 Jan 27, 2003 (UTC)

At second lecture this not really inexact, the Rolleiflex, the Hassy and the best 35mm (Leica, Contax and Nikon rangefinders) replaced the 4"x5" like the Speed Graphic for many professional use, but professional 120 like the zeiss Super Ikonta existed before.
Your text was also misleading the reader because the 120/620 originally an amateur format as common as the 35mm today see folding camera. IMHO we should take some text from folding camera to explain the decline of the 120 as an amateur format and his rise as professionnal format and mix it with your text and rework that all.
User:Ericd
Agreed, that seems like a very good idea. Can you do it? Egil 20:19 Jan 27, 2003 (UTC)
Yes but not now it's getting late.

Ericd 20:56 Jan 27, 2003 (UTC)

80.202.80.14 you may be right but I have never seen bobbin in that context. Try a search on Google. Have a look at this page for instance. A photographer will speak of rollfilm and spool (take-up spool and giving spool).
User:Ericd
Probably a US vz. UK issue, then? I still think bobbin is more exact. Perhaps something akin to GRP vz. fibreglass? --Egil 20:19 Jan 27, 2003 (UTC)

[edit] 620

When was the 620 discontinued ? Ericd 19:29 Jan 27, 2003 (UTC)

How would I know? --Egil 20:19 Jan 27, 2003 (UTC)
Jeez, brownies used 620 film, which is why they're called "Brownie 620" cameras. Someone wanna change that?
Brownies were made from 1901 onwards. 620 film was made from 1930s or so. Not *ALL* Brownies take 620. I have a Brownie No. 2 Model E that specifically says "Use Film No. 120". It would not work with 620 film spools as the turning "key" is too large for 620 spools (see the photos I've posted to the article on the differences between 120 and 620 spools) Caradea 18:11, 8 February 2007 (UTC)

[edit] Exakta

Exakta still produce camera ? Ericd

[edit] New table

I just moved a lot of frame size information into a table, which is easier to see at a glance. I added columns for the aspect ratio and nominal frame size, but it's mostly guess work. Since the nominal height of the frame is actually 56mm, I went from there trying to work everything out. The only problem is 6x12, which I figured was a 1:2 panoramic format. Well 2x56mm = 112mm, which is closer to 11cm. So, should it really be called 6x11, or is it actually closer to 12cm long? Everything else works out pretty well. Imroy 18:57, 14 March 2006 (UTC)

Linhof's web site says 2:1 for the 612 camera. Six exposures on 120. Probably the frame of film is a bit smaller because of blank space between exposures (but I don't see actual dimensions on the web site). Linhof Fg2 20:54, 14 March 2006 (UTC)
After some experimentations with old folders I have reached the conclusion than more or less 2mm is not very important in on 120 film. Be aware that that it 120 film is a "de facto" standard that started before any official international, European or US standard. However, I think its possible to find some ISO standard for the 120 film that will give the "real" size of the picture, however it's "a posteriori", IMO. Ericd 19:31, 14 March 2006 (UTC)