NM3DPPFC - Does more expensive mean more better?

After making the necessary modifications to adapt the new Volk lens to my design, I was finally able to obtain a clear image with a significantly wider field of view (FOV) on test 54. This represented a major milestone in my imaging setup.

This was by far the best retinal image I've captured with the largest FOV to date. While there was still some glare and optical aberrations present, these issues were dramatically reduced compared to previous attempts.

Volk VS cheap 20D lens

The difference between the premium Volk lens and the inexpensive eBay alternative became immediately apparent during further testing.

Budget eBay Lens Performance: When using the cheap eBay lens from previous tests, I consistently observed image distortion that increased toward the edges of the field of view. While this distortion was relatively minor, it still negatively impacted the overall quality of the final images.

Volk Lens Performance: The Volk lens revealed an interesting characteristic -it's directional in its optimal orientation. When looking through the side with the silver ring facing toward the observer, the lens produces results similar to the eBay lens, with noticeable distortions appearing toward the periphery of the image.

However, when the lens is oriented with the silver ring facing away from the observer, it produces remarkably distortion-free images across the entire field of view. This optimal orientation, combined with the lens's superior antireflective coating, is what makes the Volk lens significantly superior to the budget alternative.

The investment in quality optics has clearly paid off, delivering the kind of imaging performance that makes precise retinal analysis possible.

Next step: Reduce the light reflection and improve image quality.