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mvrdevelopment · Apr 10, 2024 · 88d02d8 · 88d02d8
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diff --git a/gdtf-spec.md b/gdtf-spec.md
@@ -165,7 +165,7 @@ all firmware revisions of the device.
 ./models/svg_side/yoke.svg
 ./models/svg_front/base.svg
 ./models/svg_front/yoke.svg
-./light_distribution/lamp1.aes
+./light_distribution/lamp1.IES
 ./light_distribution/lamp1.ldt
 
 ```
@@ -1382,7 +1382,7 @@ the Beam are specified in [table 41](#user-content-table-41 ).
 | BeamType            | [Enum](#user-content-attrtype-enum )     | Beam Type; Specified values: "Wash", "Spot", "None", "Rectangle", "PC", "Fresnel", "Glow". Default value "Wash"
 | ColorRenderingIndex | [Uint](#user-content-attrtype-uint )     | The CRI according to TM-30 is a quantitative measure of the ability of the light source showing the object color naturally as it does as daylight reference. Size 1 byte. Default value 100.                                                                                                                                                                                                                                                                                                                                                             |
 | EmitterSpectrum     | [Node](#user-content-attrtype-node )     | Optional link to emitter in the physical description; use this to define the white light source of a subtractive color mixing system. Starting point: Emitter Collect; Default spectrum is a Black-Body with the defined ColorTemperature.                                                                                                                                                                                                                                                                                                                                                                   |
-| LightDistribution     | [Resource](#user-content-attrtype-resource )     | Optional. File name without extension and without subfolder containing description of the AES or EULUMDAT file in the subfolder `./light_distribution/`.                                                                                                                                                                                                                                                                                                                                                                |
+| LightDistribution     | [Resource](#user-content-attrtype-resource )     | Optional. File name without extension and without subfolder containing description of the IES or EULUMDAT file in the subfolder `./light_distribution/`.                                                                                                                                                                                                                                                                                                                                                                |
 
 </div>
 

diff --git a/proposal/light-distribution-proposal/proposal.md b/proposal/light-distribution-proposal/proposal.md
@@ -119,13 +119,13 @@ Example Two Beam Fixture:
 - How do we handle multiple beam in one fixture
     - Multi LED Strip Light (Challenge is how you measure device)
     - Multi LED Wash Light (You want to measure all at once, but represent the beam as one)
-    - LED Ring and normal beam (You only need the beam as AES file)
+    - LED Ring and normal beam (You only need the beam as IES file)
     - Multi head fixtures (You need for each an individual beam, and it also needs to change)
 
-- Only one AES file (or and interpolation between two AES files) can be active. This is challenging when multiple Attributes have effects on the light output.
+- Only one IES file (or and interpolation between two IES files) can be active. This is challenging when multiple Attributes have effects on the light output.
 
-- Do we need to add measurement instruction to the GDTF spec or only reference the AES spec. 
-    - You measure devices in such a distance that the actual shape of the device has no influence on the measurement. For strip lights, this means a big distance. Not all can measure strip lights at such distance. The distance that AES recommends is 7x the beam diameter.
+- Do we need to add measurement instruction to the GDTF spec or only reference the IES spec. 
+    - You measure devices in such a distance that the actual shape of the device has no influence on the measurement. For strip lights, this means a big distance. Not all can measure strip lights at such distance. The distance that IES recommends is 7x the beam diameter.
 
 
 ## MVR