What is the “logic” inside lens design? There has to be a process, an approach, a method to which this all works, right? I took a deep look into my own lens design process and methods to craft what I think is a guideline of sorts when doing the nitty gritty of lens design. The […]
All posts related to lens design.
There are so many optical systems that are out there. Why is one lens type used over the other? What lens design for do I need for this system? What lens design alternatives should I consider? Can I use this lens somewhere else? What if we don’t know where to start with the lens design, […]
Do you think that lens design is all math, with complex equations and multiple calculations? That’s only partly true. There is another aspect of lens design that requires intuition, experience, and an “eye” for good performance. A more qualitative approach to the lens design that is a bit lost. I want to compare two lens […]
The landscape lens is a fascinating look through the history of lens design. We go from a very primitive single lens design that made careful considerations of astigmatism to achieve maximum performance, with incremental improvements, finally to a lens that made strategic use of a new cemented lens configuration that was groundbreaking for its time. […]
Introduction to the importance of colour correction with an achromatic doublet Colour fills the world. When we image those colours with lenses, we want it to represent what we see. Even in the days of black-and-white photos, the scene is is colour, right? Without colour correction, we can get blurry photographs since each of the […]
What is a Specification Sheet? What is a Specification Sheet? It is a list of parameters or specifications that define the performance of the lens. It’s usually the start of any lens design. (Click to enlarge) Two lens design stories Imagine this: You’ve got a big lens design project. Your design will be used in […]