LF format sizes

[myoptic]

I was working on my own spreadsheet for hyperfocal distances and DoF, and wanted to make sure that I had as many (LF) film formats listed as possible (and Yes, I know of dofmaster).

I'm hoping that forum folk will help fill in the blanks of any missing LF formats for me.

Smaller formats (subminature not included)
35mm ½ frame
35mm
6x6.45
6x6
6x7
6x8
6x9

LF (or larger) formats (I only use 9x12, 4x5)
6x12
9x12
4x5
6x17
10x15
13x15
5x7
7x11
8x10
11x14
8x20
7x17
12x20

19th-Century Image Plate Sizes: from older LFF thread (http://www.largeformatphotography.info/forum/showthread.php?t=48221)
Whole Plate: 6.5 x 8.5 inches (16.5 x 21.5 cm)
Half Plate: 4.25 x 5.5 inches (11 x 14 cm)
Quarter Plate: 3.25 x 4.25 inches (8 x 11 cm)
Sixth Plate: 2.75 x 3.25 inches (7 x 8 cm)
Ninth Plate: 2 x 2.5 inches (5 x 6 cm)
Sixteenth Plate: 1.375 x 1.625 inches (3.5 x 4 cm)

[DrTang]

well..there's robot sized 24x24 you missed

and widelux has it's own size..I forget what it was..as does the 120 panaramic camera

and of course circuit cameras

and in LF

4x10 is popular

[brian d]

6.5x9 (cm),2.25x3.25", 3.25x4.25"

[John Kasaian]

Using sliders on 5x7 back will add:
2-1/2x7
3-1/2x5

[IanG]

What about 12"x10", !5"x12", both quite common then 20"x16", 8"x5" and a whole host of others.

Not forgetting 6x12, 6x15 & 6x24 panoranic formats

Ian

[myoptic]

Thanks everyone, I will wait 24 hours or so and repost the list with the additions.

[domaz]

APS seems to be missing.

[Barry Wilkinson]

5"x12"

[Preston]

You have '6x6.45'. Shouldn't that be '6x4.5'?

--P

[David Low]

Half plate is 4 3/4 x 6 1/2 inches.
I believe that the nearest equivalent in metric is 121 x 165mm.

[Leigh]

DoF and hyperfocal distance do not change with film size.

What MAY change is the diameter of the Circle of Confusion, typically being larger for the larger formats.

But that's the only difference from 8mm through 8"x10" and larger.


- Leigh

[myoptic]

DoF and hyperfocal distance do not change with film size.

What MAY change is the diameter of the Circle of Confusion, typically being larger for the larger formats.

But that's the only difference from 8mm through 8"x10" and larger.

- Leigh

Hyperfocal distance changes with lens focal length, which generally changes with format/film size, standard lenses for 4x5 are approx. 50% the length of 8x10. My apologies if I was unclear.
I'm using the formulae here .. http://www.dofmaster.com/equations.html

[Leigh]

Hyperfocal distance changes with lens focal length, which generally changes with format/film size...
Of course DoF and hyperfocal distance change with lens focal length. My comment was about film size.

I certainly don't see any correlation between format and focal length. I use the same or similar focal lengths on all formats from half-frame 35mm through 4"x5".

- Leigh

[Emmanuel BIGLER]

??? 13x15 ???

Hello from France !

If this size is in centimetres, it might be a typo ; after 10x15 cm, "the postcard size" an old European film size for which Voigtländer had some cameras on catalog before WW-II, comes 13x18 cm, so close to 5"x7" that both format are often considered as the same.
13x18 was widely used in Europe until the 1960's. Among Jacques Lartigue's first cameras he was offered before WW-I, there was one 13x18 cm plate camera that he used hand-held for action shots.
For DOF calculations, 13x18 cm and 5"x7" are exactly the same, but you'll have hard time to insert a "true" 13x18cm film inside a 5"x7" holder :D

The classical value for the circle of least confusion is equal to the diagonal of the format divided by 1720. This means an angular diameter of 2 minutes of arc for the minimum visible feature size when the print is examined at a distance equal to its diagonal. This good ol' rule is only a sound rule of thumb, a good base for computing comparative DOF charts for all formats, certainly not an absolute law of Physics like E=mc2 ;)

[Martin Miksch]

30x40cm (12x16 )