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[[Image:Dx135can.jpg|frame|right|135 Film Cartridge with ''DX barcode'' (top) and ''DX CAS'' code. The CAS code shows this is (top row) ISO 125 film, (bottom row) 24 exposures, +3/−1 f-stop exposure tolerance. The DX barcode reads 017563, showing [[DX number]] 109-12, 24 exposures.]]
'''DX''' ('''D'''igital inde'''X''') encoding is an [[American National Standards Institute|ANSI]] and [[I3A]]a standard, originally introduced by [[Kodak]] in March 1983, for marking [[135 film|13535 mm]] and [[Advanced Photo System|APS]] photographic film and film cartridges, originally introduced by [[Kodak]] in 1983. It consists of several parts, a [[latent image]] DX film edge barcode on the film below the sprocket holes, a code on the cartridge used by automatic cameras, and a barcode on the cartridge read by photo-finishing machines.
 
The DX encoding system was incorporated into [[American National Standards Institute|ANSI]] PH1.14, which provided standards for 135 film magazines for still picture cameras and was superseded by [[I3A|NAPM]] IT1.14 in 1994; it is now part of [[International Organization for Standardization|ISO]] standard 1007, whose latest revision was issued in 2000.
 
== History ==
[[File:Kodak 400 color film DX code.jpg|rightleft|thumb|Codes on Kodak ISO 400 color negative film]]
In order to simplify the handling of 35&nbsp;mm film in 135 format cartridges, Kodak introduced the DX encoding method on 3 January 1983.<ref name="Kodak_1983_Press1"/><ref name="Kodak_1983_Press2"/> In contrast to formerthe [[film speed]] encoding method solutionsdeveloped likeby [[Fuji (company)|Fuji]]'s [[film speed]] encoding method in 1977,<ref name="Fuji_Patent_4024557"/> which was already usingused electrical contacts for film speed detection on 135 format cartridges,<ref name="AP_1977_Fuji"/> Kodak's later DX codeencoding system immediately met success in the marketplace.
 
The first DX encoded film to be released was the [[color negativeprint film]] [[Kodacolor (still photography)#Kodacolor VR 1000|Kodacolor VR-&nbsp;1000]] in March 1983.
 
The first cameras[[point-and-shoot camera]]s to use DX encoding to automatically set film speed were released in 1984, including the technology[[Pentax]] Super Sport 35&nbsp;/ PC 35AF-M<ref name="Pentax_PC35AF-M"/> and Minolta AF-E&nbsp;/ Freedom II.<ref name="Minolta_AF-E"/> The first [[single-lens reflex camera]]s to take advantage of DX encoding were released in 1985, wasincluding the [[Konica Autoreflex|Konica TC-X]] SLR (1985),<ref name="konfiles-TCX">[{{cite web |url=http://www.konicafiles.com/slr-bodies/-konica-tc-x-1985/ |website=konicafiles.com, |title=Konica TC-X (1985–1988)] Retrieved |access-date=7 November 2020.}}</ref> asPentax wellA3 as/ theA3000,<ref compact camerasname="Pentax_A3000"/> [[PentaxMinolta 7000]] Super Sport 35&nbsp;/ PC 35AF-M<ref name="Pentax_PC35AF-MMinolta_7000AF"/> (February 1985) and [[Minolta 9000|9000]] (September 1985), and the [[Nikon F-301]] / [[Nikon N2000|N2000]].
and Minolta AF-E&nbsp;/ Freedom II<ref name="Minolta_AF-E"/> in 1984. Pentax instead claimed the A3 / A3000 was the first DX-enabled SLR in 1985.<ref name="Pentax_A3000"/> Other DX-enabled SLRs were introduced in 1985 as well: [[Minolta 7000]]<ref name="Minolta_7000AF"/> (February 1985) and [[Minolta 9000|9000]] (September 1985), as well as the [[Nikon F-301]] / [[Nikon N2000|N2000]].
 
''DX-iX'' (data exchange - information exchange) is an expanded DX encoding system introduced in 1996 towhich bewas usedreleased inas conjunctionpart withof the [[Advanced Photo System]] (APS)., Itwhich isuse onlya useddifferent oncartridge [[APSand film]]s format [[IX240]]size, also known as [[AdvancedIX240 Photofilm. APS film and cameras were marketed with numerous brand names, most including an "ix" to emphasize the information exchange aspect, including System|Advantix]] (Kodak) and Nexia (Fujifilm).
 
{{anchor|Barcode System}}In 1998, [[Fujifilm]] introduced a film identification system for [[120 film|120]] and [[220 film|220 format]] [[roll film]] called ''Barcode System'' (with logo "|||B"). The [[barcode]] encoding the film format and length as well as the film speed and type is located on the sticker between the emulsion carrying film and the backing paper.<ref name="Paul_2008_Fuji-Barcode"/><ref name="Fujifilm_5845869"/><ref name="Fujifilm_6050489"/><ref name="Fujifilm_6208812"/><ref name="Fujifilm_6052538"/> This 13-bit barcode<ref name="Paul_2008_Fuji-Barcode"/><ref name="Fujifilm_5845869"/><ref name="Fujifilm_6050489"/><ref name="Fujifilm_6208812"/><ref name="Fujifilm_6052538"/> is optically scanned by newer [[medium format]] cameras like the Fujifilm GA645i Professional, GA645Wi Professional, GA645Zi Professional, GX645AF Professional, [[Fujifilm GX680III Professional|GX680III Professional]], [[Fujifilm GX680IIIS Professional|GX680IIIS Professional]], [[Hasselblad H1]], [[Hasselblad H2|H2]], [[Hasselblad H2F|H2F]] and [[Hasselblad H3D|H3D]] Model&nbsp;I with HM&nbsp;16-32 as well as by the [[Contax 645&nbsp;AF]].<ref name="Paul_2008_Fuji-Barcode"/>
 
==Implementation==
==DX cartridge barcode==
===DX cartridge barcode===
[[File:Agfaphoto APX 400 (new emulsion) 135 film cartridge 04.jpg|thumb|right|upright|Agfa APX 400, cartridge number 017712]]
Next to the film exit lip is an [[Interleaved 2 of 5]] [[barcode]] and a printed number. The six digits represent the I3A assigned [[DX number]] (middle four digits), the number of exposures (last digit) and a proprietary manufacturer's code (first digit). The DX number identifies the manufacturer, film type, and by inference, the necessary developing process type. This is used by automatic photo-finishing machines to correctly process the exposed film.<ref name=":0" />
 
===DX film edge barcode===
[[Image:Dx-film-edge-barcode.jpg|thumb|left|DX film edge barcode]]
Below the sprockets under each frame of 135 film is the DX film edge barcode. The barcode is invisible until the film has been developed. It is optically imprinted as a latent image during manufacturing. The barcode is used by photo finishers to identify each frame for printing. It consists of two parallel linear barcodes, one for a synchronizing clock called the "clock track", and the other encoding film data such as type, manufacturer and frame number, called the "data track".<ref name=":0" /> The barcode nearest the film edge (away from the sprocket holes) contains the data track. The data track sequence repeats every half frame, beginning with six start bits, followed by seven bits of DX Number Part 1, one unassigned bit, four bits of DX Number Part 2, a seven-bit frame/half-frame number, one unassigned bit, one parity bit, and finishes with four stop bits.<ref>{{Cite journal|last1=Gschwind|first1=Rudolf|last2=Zbinden|first2=Erwin|last3=Trumpy|first3=Giorgio|last4=Delaney|first4=John|date=2017|title=Color negatives at the demise of silver halides|url=https://doi.org/10.5167/uzh-142330|journal=ICOM-CC 18th Triennial Conference Preprints, Copenhagen, 4–8 September 2017|volume=|pages=188–191|doi=10.5167/uzh-142330 |via=[[University of Zurich]]}}</ref> The seven-bit frame/half-frame number is called the "DXN" number (different than the [[DX number|"DX Number Part 1" and "DX Number Part 2"]]), and is an extension on the original DX edge code, patented by Eastman Kodak in 1990.<ref name=":0">Eastman Kodak Co. {{cite patent|country=US|number=4965628|title=Photographic film with latent image multi-field bar code and eye-readable symbols|status=patent|pubdate=1990-10-23|gdate=1990-10-23|invent1inventor1-last=Olliver|invent2inventor2-last=Johnson|invent3inventor3-last=Patton|inventor1-first=Richard|inventor2-first=Cortlandt|inventor3-first=David |assign=Eastman Kodak Company}}</ref><ref>{{cite patent|country=EP|number=0838718B1|title=Method of printing frame numbers from DX-coded photographic film not having frame number codes|status=|pubdate=|gdate=|invent1=|inventor1-first=}}</ref>
 
Some image processing software utilized by [[Film scanner|film scanners]] allow selection of film manufacturer and type to provide automatic color correction. Interpreting the DX film edge barcode may provide this information, permitting accurate color correction to be applied.
 
===DX Camera Auto Sensing===
The outside of film cartridges are marked with a DX Camera Auto Sensing (CAS) code readable by many cameras. Cameras can then automatically determine the [[film speed]], number of exposures and exposure tolerance.
 
The DX Camera Auto Sensing code takes the form of a grid of contact points on the side of the metal cartridge surface that are either conductive or non-conductive. Electrical contacts in the camera read the bit pattern. Most cameras read only part of the code; typically, only the film speed is read, and some cameras aimed at the consumer market only read enough bits to tell apart the most common film speeds. For example, 100, 200, 400, and 800 can be detected by reading only S1 and S2 and ground.
 
====Electrical contacts====
 
On 35mm film cartridges there are two rows of six rectangular areas. The two left-most areas (with the spool post on the left) are both common (ground) and are thus always bare metal. The remaining five bits in the top row represent 32 possible film speeds, but only the 24 speeds representing intervals spaced at {{frac|3}} steps, from ISO 25/15° to 5000/38°, are used.
 
The film speed codes are in binary order if the first three bits (S1, S2, S3) are considered to be a "base" identifying a trio of speeds and the last two bits (S4 and S5) are considered an adjustment of +{{frac|3}} or +{{frac|2|3}} stops within that trio. For example, ISO speed 25/15° is encoded as 00010, while 32/16° is 00001 and 40/17° is 00011. These share a common encoding of 000xx for the first three bits, differing only in the last two bits. Similarly, the next three speeds are encoded 10010 (50/18°), 10001 (64/19°), and 10011 (80/20°); it is clear from examination these all share the same 100xx encoding for the first three bits. By comparison to the preceding set of three speeds, the encoding for 25/15° (00010) and 50/18° (10010) have the same xxx10 encoding for the last two bits; likewise, 32/16° (00001) and 64/19° (10001) share the xxx01 encoding, which indicates +{{frac|3}} stop compared to the xxx10 encoding, and 40/17° (00011) and 80/20° (10011) share the xxx11 encoding, which indicates +{{frac|2|3}} stop compared to the xxx10 encoding.
On 35mm film cartridges there are two rows of six rectangular areas. The two left-most areas (with the spool post on the left) are both common (ground) and are thus always bare metal. The remaining five bits in the top row represent 32 possible film speeds. But only the 24 speeds representing the 1/3 [[f-number|stops]] from ISO 25/15° to 5000/38° are used. The codes are not in strict binary order.
 
In the second row, the first three bits represent eight possible film lengths, although in practice only 12, 20, 24 and 36 exposures are encoded. The remaining two bits of the second row give four ranges of exposure tolerance, or latitude.
Line 59 ⟶ 64:
Where "G" are the two common-ground contacts, "S" is the film speed, "L" the film length, and "T" the exposure tolerance.
 
====Reading DX Camera Auto Sensing codes====
The encoding scheme is illustrated in the truth table below using letters and color.
Where "G" is ground, "T" represents the connection to ground and "F" for the lack of connection.
 
<div>
{| class="wikitable" align=left
{| class="wikitable" style="text-align:center;font-size:90%;"
|+'''Speed'''
|+Standard film speed encoding
|-
! ISOrowspan=2 | [[Film speed]]<br/>(ISO)
! colspan=6 | 1st row DX contacts
| style="font-size:15%;background:#448;" rowspan=10 | &nbsp;
! rowspan=2 | [[Film speed]]<br/>(ISO)
! colspan=6 | 1st row DX contacts
| style="font-size:15%;background:#448;" rowspan=10 | &nbsp;
! rowspan=2 | [[Film speed]]<br/>(ISO)
! colspan=6 | 1st row DX contacts
|-
| style="background:#7f7;" | G
!
| style="background-color:#7fff7ff77;" | GS1 || style="background:#f77;" | S2 || style="background:#f77;" | S3
| style="background-color:#ff7f7ff77;" | S1S4 || style="background:#f77;" | S5
| style="background-color:#ff7f7f7f7;" | S2G
| style="background-color:#ff7f7ff77;" | S1 || style="background:#f77;" | S2 || style="background:#f77;" | S3
| style="background-color:#ff7f7ff77;" | S4 || style="background:#f77;" | S5
| style="background-color:#ff7f7f7f7;" | S5G
| style="background:#f77;" | S1 || style="background:#f77;" | S2 || style="background:#f77;" | S3
| style="background:#f77;" | S4 || style="background:#f77;" | S5
|-
! 25/15°
| style="background-color:#7fff7f7f7;" | G
| style="background-:#000;color:#000000fff;" | F || style="background:#000;color:#fff;" | F || style="background:#000;color:#fffffffff;" | F
| style="background-:#fff;color:#000000000;" | T || style="background:#000;color:#fffffffff;" | F
 
| style="background-color:#000000; color:#ffffff;" | F
| style="background-color:#ffffff; color:#000000;" | T
| style="background-color:#000000; color:#ffffff;" | F
|-
! 32/16°
| style="background-color:#7fff7f7f7;" | G
| style="background-:#000;color:#000000fff;" | F || style="background:#000;color:#fff;" | F || style="background:#000;color:#fffffffff;" | F
| style="background-:#000;color:#000000fff;" | F || style="background:#fff;color:#ffffff000;" | FT
 
| style="background-color:#000000; color:#ffffff;" | F
| style="background-color:#000000; color:#ffffff;" | F
| style="background-color:#ffffff; color:#000000;" | T
|-
! 40/17°
| style="background-color:#7fff7f7f7;" | G
| style="background-:#000;color:#000000fff;" | F || style="background:#000;color:#fff;" | F || style="background:#000;color:#fffffffff;" | F
| style="background-:#fff;color:#000000000;" | T || style="background:#fff;color:#ffffff000;" | FT
 
| style="background-color:#000000; color:#ffffff;" | F
| style="background-color:#ffffff; color:#000000;" | T
| style="background-color:#ffffff; color:#000000;" | T
|-
! 50/18°
| style="background-color:#7fff7f7f7;" | G
| style="background-:#fff;color:#ffffff000;" | T || style="background:#000;color:#000000fff;" | TF || style="background:#000;color:#fff;" | F
| style="background-:#fff;color:#000000000;" | T || style="background:#000;color:#fffffffff;" | F
 
| style="background-color:#000000; color:#ffffff;" | F
| style="background-color:#ffffff; color:#000000;" | T
| style="background-color:#000000; color:#ffffff;" | F
|-
! 64/19°
| style="background-color:#7fff7f7f7;" | G
| style="background-:#fff;color:#ffffff000;" | T || style="background:#000;color:#000000fff;" | TF || style="background:#000;color:#fff;" | F
| style="background-:#000;color:#000000fff;" | F || style="background:#fff;color:#ffffff000;" | FT
 
| style="background-color:#000000; color:#ffffff;" | F
| style="background-color:#000000; color:#ffffff;" | F
| style="background-color:#ffffff; color:#000000;" | T
|-
! 80/20°
| style="background-color:#7fff7f7f7;" | G
| style="background-:#fff;color:#ffffff000;" | T || style="background:#000;color:#000000fff;" | TF || style="background:#000;color:#fff;" | F
| style="background-:#fff;color:#000000000;" | T || style="background:#fff;color:#ffffff000;" | FT
 
| style="background-color:#000000; color:#ffffff;" | F
| style="background-color:#ffffff; color:#000000;" | T
| style="background-color:#ffffff; color:#000000;" | T
|-
! 100/21°
| style="background-color:#7fff7f7f7;" | G
| style="background-:#000;color:#000000fff;" | F || style="background:#fff;color:#000;" | T || style="background:#000;color:#fffffffff;" | F
| style="background-:#fff;color:#ffffff000;" | T || style="background:#000;color:#000000fff;" | TF
 
| style="background-color:#000000; color:#ffffff;" | F
| style="background-color:#ffffff; color:#000000;" | T
| style="background-color:#000000; color:#ffffff;" | F
|-
! 125/22°
| style="background-color:#7fff7f7f7;" | G
| style="background-:#000;color:#000000fff;" | F || style="background:#fff;color:#000;" | T || style="background:#000;color:#fffffffff;" | F
| style="background-:#000;color:#fffffffff;" | F || style="background:#fff;color:#000000000;" | T
 
| style="background-color:#000000; color:#ffffff;" | F
| style="background-color:#000000; color:#ffffff;" | F
| style="background-color:#ffffff; color:#000000;" | T
|-
! 160/23°
| style="background-color:#7fff7f7f7;" | G
| style="background-:#000;color:#000000fff;" | F || style="background:#fff;color:#000;" | T || style="background:#000;color:#fffffffff;" | F
| style="background-:#fff;color:#ffffff000;" | T || style="background:#fff;color:#000000000;" | T
 
| style="background-color:#000000; color:#ffffff;" | F
| style="background-color:#ffffff; color:#000000;" | T
| style="background-color:#ffffff; color:#000000;" | T
|-
! 200/24°
| style="background-color:#7fff7f7f7;" | G
| style="background-:#fff;color:#ffffff000;" | T || style="background:#fff;color:#000000000;" | T || style="background:#000;color:#fff;" | F
| style="background-:#fff;color:#ffffff000;" | T || style="background:#000;color:#000000fff;" | TF
 
| style="background-color:#000000; color:#ffffff;" | F
| style="background-color:#ffffff; color:#000000;" | T
| style="background-color:#000000; color:#ffffff;" | F
|-
! 250/25°
| style="background-color:#7fff7f7f7;" | G
| style="background-:#fff;color:#ffffff000;" | T || style="background:#fff;color:#000000000;" | T || style="background:#000;color:#fff;" | F
| style="background-:#000;color:#fffffffff;" | F || style="background:#fff;color:#000000000;" | T
 
| style="background-color:#000000; color:#ffffff;" | F
| style="background-color:#000000; color:#ffffff;" | F
| style="background-color:#ffffff; color:#000000;" | T
|-
! 320/26°
| style="background-color:#7fff7f7f7;" | G
| style="background-:#fff;color:#ffffff000;" | T || style="background:#fff;color:#000000000;" | T || style="background:#000;color:#fff;" | F
| style="background-:#fff;color:#ffffff000;" | T || style="background:#fff;color:#000000000;" | T
 
| style="background-color:#000000; color:#ffffff;" | F
| style="background-color:#ffffff; color:#000000;" | T
| style="background-color:#ffffff; color:#000000;" | T
|-
! 400/27°
| style="background-color:#7fff7f7f7;" | G
| style="background-:#000;color:#000000fff;" | F || style="background:#000;color:#fffffffff;" | F || style="background:#fff;color:#000;" | T
| style="background-:#fff;color:#000000000;" | T || style="background:#000;color:#fffffffff;" | F
 
| style="background-color:#ffffff; color:#000000;" | T
| style="background-color:#ffffff; color:#000000;" | T
| style="background-color:#000000; color:#ffffff;" | F
|-
! 500/28°
| style="background-color:#7fff7f7f7;" | G
| style="background-:#000;color:#000000fff;" | F || style="background:#000;color:#fffffffff;" | F || style="background:#fff;color:#000;" | T
| style="background-:#000;color:#000000fff;" | F || style="background:#fff;color:#ffffff000;" | FT
 
| style="background-color:#ffffff; color:#000000;" | T
| style="background-color:#000000; color:#ffffff;" | F
| style="background-color:#ffffff; color:#000000;" | T
|-
! 640/29°
| style="background-color:#7fff7f7f7;" | G
| style="background-:#000;color:#000000fff;" | F || style="background:#000;color:#fffffffff;" | F || style="background:#fff;color:#000;" | T
| style="background-:#fff;color:#000000000;" | T || style="background:#fff;color:#ffffff000;" | FT
 
| style="background-color:#ffffff; color:#000000;" | T
| style="background-color:#ffffff; color:#000000;" | T
| style="background-color:#ffffff; color:#000000;" | T
|-
! 800/30°
| style="background-color:#7fff7f7f7;" | G
| style="background-:#fff;color:#ffffff000;" | T || style="background:#000;color:#fff;" | F || style="background:#fff;color:#000000000;" | T
| style="background-:#fff;color:#000000000;" | T || style="background:#000;color:#fffffffff;" | F
 
| style="background-color:#ffffff; color:#000000;" | T
| style="background-color:#ffffff; color:#000000;" | T
| style="background-color:#000000; color:#ffffff;" | F
|-
! 1000/31°
| style="background-color:#7fff7f7f7;" | G
| style="background-:#fff;color:#ffffff000;" | T || style="background:#000;color:#fff;" | F || style="background:#fff;color:#000000000;" | T
| style="background-:#000;color:#000000fff;" | F || style="background:#fff;color:#ffffff000;" | FT
 
| style="background-color:#ffffff; color:#000000;" | T
| style="background-color:#000000; color:#ffffff;" | F
| style="background-color:#ffffff; color:#000000;" | T
|-
! 1250/32°
| style="background-color:#7fff7f7f7;" | G
| style="background-:#fff;color:#ffffff000;" | T || style="background:#000;color:#fff;" | F || style="background:#fff;color:#000000000;" | T
| style="background-:#fff;color:#000000000;" | T || style="background:#fff;color:#ffffff000;" | FT
 
| style="background-color:#ffffff; color:#000000;" | T
| style="background-color:#ffffff; color:#000000;" | T
| style="background-color:#ffffff; color:#000000;" | T
|-
! 1600/33°
| style="background-color:#7fff7f7f7;" | G
| style="background-:#000;color:#000000fff;" | F || style="background:#fff;color:#ffffff000;" | FT || style="background:#fff;color:#000;" | T
| style="background-:#fff;color:#ffffff000;" | T || style="background:#000;color:#000000fff;" | TF
 
| style="background-color:#ffffff; color:#000000;" | T
| style="background-color:#ffffff; color:#000000;" | T
| style="background-color:#000000; color:#ffffff;" | F
|-
! 2000/34°
| style="background-color:#7fff7f7f7;" | G
| style="background-:#000;color:#000000fff;" | F || style="background:#fff;color:#ffffff000;" | FT || style="background:#fff;color:#000;" | T
| style="background-:#000;color:#fffffffff;" | F || style="background:#fff;color:#000000000;" | T
 
| style="background-color:#ffffff; color:#000000;" | T
| style="background-color:#000000; color:#ffffff;" | F
| style="background-color:#ffffff; color:#000000;" | T
|-
! 2500/35°
| style="background-color:#7fff7f7f7;" | G
| style="background-:#000;color:#000000fff;" | F || style="background:#fff;color:#ffffff000;" | FT || style="background:#fff;color:#000;" | T
| style="background-:#fff;color:#ffffff000;" | T || style="background:#fff;color:#000000000;" | T
 
| style="background-color:#ffffff; color:#000000;" | T
| style="background-color:#ffffff; color:#000000;" | T
| style="background-color:#ffffff; color:#000000;" | T
|-
! 3200/36°
| style="background-color:#7fff7f7f7;" | G
| style="background-:#fff;color:#ffffff000;" | T || style="background:#fff;color:#000;" | T || style="background:#fff;color:#000000000;" | T
| style="background-:#fff;color:#ffffff000;" | T || style="background:#000;color:#000000fff;" | TF
 
| style="background-color:#ffffff; color:#000000;" | T
| style="background-color:#ffffff; color:#000000;" | T
| style="background-color:#000000; color:#ffffff;" | F
|-
! 4000/37°
| style="background-color:#7fff7f7f7;" | G
| style="background-:#fff;color:#ffffff000;" | T || style="background:#fff;color:#000;" | T || style="background:#fff;color:#000000000;" | T
| style="background-:#000;color:#fffffffff;" | F || style="background:#fff;color:#000000000;" | T
 
| style="background-color:#ffffff; color:#000000;" | T
! 5000/38°
| style="background-color:#000000; color:#ffffff;" | F
| style="background-color:#ffffff; color:#0000007f7;" | TG
| style="background:#fff;color:#000;" | T || style="background:#fff;color:#000;" | T || style="background:#fff;color:#000;" | T
| style="background:#fff;color:#000;" | T || style="background:#fff;color:#000;" | T
|}
</div>
<div style=display:inline-grid>
{| class="wikitable" style="text-align:center;font-size:90%;"
|+Custom film speed encoding
! rowspan=2 | ISO speed
! colspan=6 | 1st row DX contacts
|-
! 5000/38°
| style="background-color:#7fff7f;" | G
| style="background-color:#ffffff; color:#000000ff7f7f;" | TS1
| style="background-color:#ffffff; color:#000000ff7f7f;" | TS2
| style="background-color:#ffffff; color:#000000ff7f7f;" | TS3
| style="background-color:#ffffff; color:#000000ff7f7f;" | TS4
| style="background-color:#ffffff; color:#000000ff7f7f;" | TS5
|-
! ''custom 1''
Line 333 ⟶ 295:
| style="background-color:#000000; color:#ffffff;" | F
|}
</div>
 
<div style=display:inline-grid>
{| class="wikitable" align=center
{| class="wikitable" style="text-align:center;font-size:90%;"
|+'''Film length'''
! rowspan=2 | Exposures
|-
! Exposures
! colspan=6 | 2nd row DX contacts
|-
!
| style="background-color:#7fff7f;" | G
| style="background-color:#ffff7f;" | L1
Line 412 ⟶ 373:
| style="background-color:#7f7f7f;" | &nbsp;&nbsp;
|}
</div>
 
<div style=display:inline-grid>
{| class="wikitable" align=center
{| class="wikitable" style="text-align:center;font-size:90%;"
|+'''Exposure tolerance'''
|-
! rowspan=2 | Exposure tolerance<br/>(in [[f-stop]]s)
! colspan=6 | 2nd row DX contacts
|-
!
| style="background-color:#7fff7f;" | G
| style="background-color:#ffff7f;" | L1
Line 459 ⟶ 420:
| style="background-color:#ffffff; color:#000000;" | T
|}<ref name="Paul_2005_DX-CAS"/>
</div>
{{Clear}}
 
Retrieved from "https://en.wikipedia.org/wiki/DX_encoding"