diff --git a/Contents/Code/PAdata18ImageSearch.py b/Contents/Code/PAdata18ImageSearch.py
index 7695cfbb1..b16218b2c 100644
--- a/Contents/Code/PAdata18ImageSearch.py
+++ b/Contents/Code/PAdata18ImageSearch.py
@@ -278,7 +278,9 @@ def classify_image(width, height):
 
     # Poster heuristics
     if orientation == "portrait":
-        if aspect >= 1.2:             # tall enough
+        # avoid too tall/short (perfect is 1.5)
+        # https://support.plex.tv/articles/200220677-local-media-assets-movies/#:~:text=Poster%20art%20is%20typically%20of%201:1.5%20aspect%20ratio
+        if 1.4 <= aspect <= 1.6:
             if resolution >= 200000:  # avoid tiny thumbs
                 return "poster"
 
diff --git a/docs/preferences.md b/docs/preferences.md
index b212ae2b5..866d1f804 100644
--- a/docs/preferences.md
+++ b/docs/preferences.md
@@ -24,14 +24,14 @@
  - Large library additions may result in some scrapers to IP BAN (i.e. Data18)
 
 ## Data18 Image Searching - Experimental
- - Note: Labelled experimental because not a lot of effort went into the matching alorithm.
+ - Note: Labeled experimental because not a lot of effort went into the matching algorithm.
  - Currently only configured for Reptyle and Network1Service
 
  * ### Data18 Image Search Enable
-   - Enable/Disable searching Data 18 for Searching for Images on Top of Scraper
+   - Enable/Disable searching Data 18 for images on top of scraper
 
  * ### Data18 Image Extra Galleries Enable
-   - Enable/Disable getting images from extra galleries (these galleries are normally skipped if better galleries are present)
+   - Enable/Disable getting images from extra galleries (these large/lower quality galleries are normally skipped if better galleries are present)
 
  * ### Data18 Image Search Accuracy
    - Sets a minimum percentage (0% to 100%) match based on date (if available), title and search site/network