# Reducing Anti-glare sparkle ## Companion video {% embed url="" %} ## Reducing AG sparkle from etched glass I don't know of any way to remove the anti-glare sparkle if it is due to etched glass. However, some people have had luck reducing the sparkle by adding a film on top of the AG glass. Here is an example: * r/wacom - [Cintiq 24 Pro OEM screen protector](https://www.reddit.com/r/wacom/comments/1455ay0/cintiq_24_pro_oem_screen_protector/) 6/9/2023 ## **Reducing AG sparkle from AG films** **Tablets with replaceable AG films** Some tablets have a film that is designed to be removed and replaced. For example the Huion Kamvas 13 . If you have such a tablet you could remove the film. You could also try 3rd party screen protectors to replace the one you have. See [Surface protection](/drawtab/misc/surface-protectors-obsolete.md). **Tablets without replaceable AG films** If the tablet's film is not designed to be removed, you could still do it, but I think you might risk damaging the glass. If you do pursue this route, try to find someone who did this before and learn from their experience. #### Removing the AG film without replacing it If you do remove the film, you will be drawing on the glass of the display. To avoid scratching that glass, you may want to search for a film that can protect it, but that does not have any anti-glare treatment. See [Surface protection](/drawtab/misc/surface-protectors-obsolete.md). ## Reddit threads * r/huion - - This deleted reddit post has an video thet perfectly demonstrates the shimmering effect of the sparkle. * r/huion - [Is this normal? Possible display issue? noisy output?](https://www.reddit.com/r/huion/comments/z2gfsx/is_this_normal_possible_display_issue_noisy_output/) 11/23/2022 ## References * [Radiant Vision Systems - Repeatable Sparkle Measurement for Quality Control of Anti-Glare Displays](https://www.radiantvisionsystems.com/blog/repeatable-sparkle-measurement-quality-control-anti-glare-displays) 2020-10-26 * [Radiant Vision Systems - Defining a Sparkle Measurement Standard for Quality Control of Anti-Glare Displays](https://www.youtube.com/watch?v=8iTGUNAxPOc) 2020-10-08 * [Gollier et al. - Display Sparkle Measurement and Human Response](https://jamesferwerda.com/wp-content/uploads/2015/06/r23_gollier13_sid.pdf) * [Ferwerda et al. - Perception of sparkle in anti-glare display screens](https://jamesferwerda.com/wp-content/uploads/2015/06/j18_ferwerda14_jsid.pdf) --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.sevenpens.com/drawtab/guides/pen-displays/reducing-ag-sparkle.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.