# Circles losing pixels, magnified upon enlarging

**URL:** https://discourse.psychopy.org/t/circles-losing-pixels-magnified-upon-enlarging/14226
**Category:** Builder
**Tags:** screen
**Created:** [June 12, 2020, 6:49pm UTC](https://discourse.psychopy.org/t/circles-losing-pixels-magnified-upon-enlarging/14226 "2020-06-12T18:49:34Z")
**Posts on this page:** 6
**Page:** 1

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### Author: ![obeescee](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.psychopy.org/obeescee/32/9753_2.png) [@obeescee](https://discourse.psychopy.org/u/obeescee)
#### Post date: [June 12, 2020, 6:49pm UTC](https://discourse.psychopy.org/t/circles-losing-pixels-magnified-upon-enlarging/14226/1 "2020-06-12T18:49:34Z")

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I’ve tried changing my vertices and window modes but to no avail. Not sure what causes this. Maybe something on the GUI end?

 ![s](https://us1.discourse-cdn.com/flex002/uploads/psychopy/original/3X/4/4/4412b1c9a3923aa3580c1cbed03ef34965a7d67b.jpeg) ![emboldening pixel drop](https://us1.discourse-cdn.com/flex002/uploads/psychopy/original/3X/e/7/e796572eb49e13d2f32fc70f1ca5d4de903fdfbd.jpeg) ![More pixel drop](https://us1.discourse-cdn.com/flex002/uploads/psychopy/original/3X/3/7/3793c97ece4b78c8ddbf4cdd4dcc3ec7598c7a22.jpeg)

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### Author: ![wakecarter](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.psychopy.org/wakecarter/32/5753_2.png) [@wakecarter](https://discourse.psychopy.org/u/wakecarter)
#### Post date: [June 13, 2020, 6:33am UTC](https://discourse.psychopy.org/t/circles-losing-pixels-magnified-upon-enlarging/14226/2 "2020-06-13T06:33:49Z")

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Do you get the same thing when you use fewer vertices (e.g. 36 or 72)?

I’ve experienced this but I can’t now remember what I did.

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### Author: ![obeescee](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.psychopy.org/obeescee/32/9753_2.png) [@obeescee](https://discourse.psychopy.org/u/obeescee)
#### Post date: [June 13, 2020, 7:39am UTC](https://discourse.psychopy.org/t/circles-losing-pixels-magnified-upon-enlarging/14226/3 "2020-06-13T07:39:38Z")

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Gone down to 36 and up to 800. Around 57 vertices I see the lines become more discrete rather than the rather scattered ones you see in the images. That’s about it, unfortunately.

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### Author: ![wakecarter](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.psychopy.org/wakecarter/32/5753_2.png) [@wakecarter](https://discourse.psychopy.org/u/wakecarter)
#### Post date: [June 13, 2020, 8:08am UTC](https://discourse.psychopy.org/t/circles-losing-pixels-magnified-upon-enlarging/14226/4 "2020-06-13T08:08:27Z")

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New suggestion.

It could be an issue with the borders. How about trying two solid circles with no border: a smaller grey one on top of a larger white one.

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### Author: ![Michael](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.psychopy.org/michael/32/16_2.png) [@Michael](https://discourse.psychopy.org/u/Michael)
#### Post date: [June 14, 2020, 12:50am UTC](https://discourse.psychopy.org/t/circles-losing-pixels-magnified-upon-enlarging/14226/5 "2020-06-14T00:50:26Z")

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Its hard to replicate this on a Mac with a retina screen.

But perhaps go to the “advanced” tab. What setting is applied for “Interpolate”? Try playing with that.

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### Author: ![obeescee](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.psychopy.org/obeescee/32/9753_2.png) [@obeescee](https://discourse.psychopy.org/u/obeescee)
#### Post date: [June 14, 2020, 6:05pm UTC](https://discourse.psychopy.org/t/circles-losing-pixels-magnified-upon-enlarging/14226/6 "2020-06-14T18:05:05Z")

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wakecarter’s suggestion seems to be the only one that works, unfortunately. I played around with interpolation and saw no difference. Bummer that the fix is fairly complicated! Thanks for the help, nonetheless.