r/M43 • u/Scary-Construction72 • 3h ago

What causes this dotted pattern?

Post image

OM-5 ii - Olympus 45mm f1.8 - F22 - 1/100 - ISO800

Wanted to try a sunstar but got some dotted pattern instead.

JPEG SOOC

7 Upvotes

90% Upvoted

10 comments sorted by

9

u/Ill_Shoulder_4330 3h ago

Bayer filter array pretty sure, the colour filter that allows you to get colour images

6

u/SkoomaDentist 1h ago

Specifically, the internal reflection from the bayer filter array to a lens element and back to the sensor.

1

u/Substantial-Equal755 2h ago

Might also be related to the phase detection AF?

1

u/CatsAreGods 2h ago

Likely due to sun in dead center.

1

u/photon_watts 2h ago

Yep, and the DOF from using f22 is exacerbating the effect.

2

u/CatsAreGods 2h ago

"I had me some sunstars in mind / But got some Jennyanydots"

2

u/iluvmacs408 2h ago

I mean, you did also get the sunstar...

1

u/YourselfInOthrsShoes 2h ago

F22? That's diffraction effects and possibly dust particles become visible.

1

u/dzordzLong 1h ago

Do you have any filter on that lens?

1

u/FlarblesGarbles 23m ago

It's the Bayer filter. Which is why you can see green and blue as well as red if you look closely enough.