Extended Functions

This section explains the extended functions that become available by using an Upgrade Software Key (DMW-SFU3A: optional).

[ARRI LogC3] Has Been Added as a Photo Style

It is now possible to select [ARRI LogC3] from [Photo Style].

This can only be selected in [ icon_mode-video ]/[S&Q] mode with [Rec. File Format(Video)] set to [MOV] or [Apple ProRes].

button_menu-set [ icon_movie ] [ icon_photo-quality ] Select [Photo Style]

icon_photo-style-arri-log3 [ARRI LogC3]

A setting for log video that conforms to the EI800 gamma curve from the LogC3 specification offered by ARRI ( character_reference Log Recording)

It allows the production of images rich in gradation through post-production techniques.

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It is possible to set [ARRI LogC3] in the Photo Style display restrictions in the Photo Style setting of the [Custom] ([Image Quality]) menu.

Functions are restricted as follows when [ARRI LogC3] is set:

– Cannot record with the [MP4] recording quality.

– Cannot record with the [MOV] [420/8-L] recording quality.

– Cannot record with the [Apple ProRes RAW HQ]/[Apple ProRes RAW] recording quality.

– ISO sensitivity is restricted to a lower limit of 500 and an upper limit of 51200.

– The luminance level setting is fixed to [64-940].

– [L] in [Proxy Rec. Quality] is not available.

– [Master Pedestal Level] is not available.

– [i.Dynamic Range] is not available.

– The only image quality adjustments available are [Sharpness] and [Noise Reduction].

The base Photo Style information for [ARRI LogC3] is as follows:

#LUMIXPHOTOSTYLE LOGC3: [ARRI LogC3]

Log Recording

icon_mode-photo_gray icon_mode-movie icon_mode-sq

icon_mode-ia_gray icon_mode-p icon_mode-a icon_mode-s icon_mode-m

Setting [Photo Style] to [ARRI LogC3] enables Log recording.

Images finished with rich gradation can be created through post-production processing.

Set to [] or [S&Q] mode.

( character_reference Photo/Video/S&Q Switch)

Set [Rec. File Format(Video)] to [MOV] or [Apple ProRes].

button_menu-set [ icon_movie ] [ icon_video-image-format ] [Rec. File Format(Video)] [MOV]/[Apple ProRes]

Select the video image quality with which [ARRI LogC3] can be used.

button_menu-set [ icon_movie ] [ icon_video-image-format ] [Rec Quality]

Select [ARRI LogC3].

button_menu-set [ icon_movie ] [ icon_photo-quality ] [Photo Style] [ARRI LogC3]

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Post-production processing is enabled by utilizing LUT (Look-Up Table).

Download the LUT file for [ARRI LogC3] from the following:

(1) ARRI Look Library (LogC3-to-Rec709)

A LUT file with the ARRI Look File applied for the Rec.709 color space.

There are 87 types of Look Files, providing you with a great variety. (As of June 2025)

https://www.arri.com/resource/blob/365070/de67ce8908d30b22d83526dc4c1c8732/arri-look-library-logc3-to-rec709-3d-luts-data.zip

(2) ARRI Look Library (log-to-log)

A LUT file for applying Looks with the Log space as is with its rich color information.

Similarly to (1), there are 87 types of Look Files, providing you with a great variety. (As of June 2025)

https://www.arri.com/resource/blob/283984/763aadc4a2be5c301529704b1357513c/arri-look-library-logc3-log-to-log-3d-luts-data.zip

(3) ARRI LogC3 LUT Package

A LUT file for converting from ARRI LogC3 to the color spaces of a variety of display devices.

By going through (2) ARRI Look Library (log-to-log), it is possible to produce the Look according to the color space you are aiming for.

https://www.arri.com/resource/blob/294620/f4290b963ff83a4dde4fff795645bc26/2022-09-arri-logc3-v1-2-lut-package-data.zip

Refer to the following site for information regarding ARRI Look Files:

https://www.arri.com/en/learn-help/learn-help-camera-system/image-science/look-files

character_diamond ISO Sensitivity When [ARRI LogC3] Is Set

The lower limit of available ISO sensitivity is [500], and the upper limit is [51200].

Reset the exposure if necessary when ISO sensitivity changes.

character_diamond ISO Sensitivity When [Dual Native ISO Setting] Is Set

[AUTO]: Base sensitivity: 500 / 3200 (dB display values are based on 500)

AUTO / 500 to 51200

[LOW]: Base sensitivity: 500

AUTO / 500 to 4000

[HIGH]: Base sensitivity: 3200

AUTO / 3200 to 51200

character_diamond Exposure When [ARRI LogC3] Is Set

The log characteristics of [ARRI LogC3] comply with 800 ASA (EI 800), described in “ARRI_ALEXA_LogC_Curve_in_VFX.pdf” released by ARRI. The log characteristics of [ARRI LogC3] on this camera do not depend on the ISO sensitivity settings.

However, according to the Exposure Stops values defined in 800 ASA (EI 800), there will be the equivalent of 1.3 stops worth of clipping.

Refer to the following for “ARRI_ALEXA_LogC_Curve_in_VFX.pdf”:

https://www.arri.com/resource/blob/31918/66f56e6abb6e5b6553929edf9aa7483e/2017-03-alexa-logc-curve-in-vfx-data.pdf

Diagram of the log characteristics of [ARRI LogC3] on this camera

image_arri_logc3-character1

(1) 18 % gray

(2) Clipping level

	When [Photo Style] is set to [ARRI LogC3]
	Exposure Stops (18 % gray standard)	Full range			Video range
		IRE (%)	Code Value		IRE (%)	Code Value
		IRE (%)	10 bit	12 bit	IRE (%)	10 bit	12 bit
Black level	—	3.5	95	380	9.2	145	580
(1)	0.0	38	400	1600	39	407	1628
(2)	6.3	93	877	3508	86	817	3268

When the [Photo Style] is set to [ARRI LogC3] or [REAL TIME LUT] (base Photo Style is [ARRI LogC3]), the [Luminance Level] is fixed to [64-940] (video range).

The recorded data is recorded as video range.

HDMI output is output as video range.

The waveform and vector scope are both displayed as video range.

The luminance spot meter displays the 18 % gray output level as 0 Stop.

[LUT Select(ARRI LogC3)] Added to [Log View Assist]

You can now select [LUT Select(ARRI LogC3)] in [Log View Assist].

button_menu-set [] [ icon_video-display-output ] Select [Log View Assist]

[LUT Select(ARRI LogC3)]

Selects the LUT file to apply from a preset or LUT files registered in [LUT Library]. ( character_reference [LUT Library])

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When [Photo Style] is [ARRI LogC3], you cannot apply LUT files which are a base Photo Style other than [ARRI LogC3].

[ARRI 709] Added to the [LUT Library]

[ARRI 709] has been added as a sample LUT in the [LUT Library].

button_menu-set [] [ icon_photo-quality ] [LUT Library] Select [ARRI 709]

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[Sorting], [Delete] and [Edit Title] are not possible with [ARRI 709].