Are these DIC image patterns from the camera or microscope optics?
Hi everyone,
I am using a Zeiss microscope with DIC imaging and I am seeing some unusual patterns in my images. I would like to understand whether these are more likely caused by the camera/sensor or by something in the microscope optical path or alignment.
I have attached images taken at two different time points (in 4x objective). I have also checked that the issue is objective-independent. I am not asking about the sample or any microfluidic device shown; I want to focus only on the imaging artifacts.
The patterns include:
- Strong bright/dark boundary-like contrast
- Speckle-like black/white texture in some regions
- Thin scratch-like or branch-like structures
- Slight changes between images taken at different time points
My main question is:
Do these patterns look like a camera/sensor issue, or are they more likely due to microscope optics, illumination, DIC alignment, condenser alignment, focus, dust, or contamination somewhere in the optical path?
A few specific questions:
- What do camera/sensor artifacts usually look like in DIC or transmitted-light microscopy?
- Would a camera problem typically appear as fixed pixels, stripes, banding, grid-like noise, or row/column artifacts?
- Can dust, contamination, scratches, or debris in the optical path create speckle-like or branch-like patterns?
Any advice and suggestions from people experienced with Zeiss DIC/transmitted-light microscopy would be appreciated.
Thank you,
Mahesh