Losing lens caps is a pain. There are many alternatives like keeping a leash attached to your lens or creating a system of placing the cap in your pocket or bag that you religiously repeat. My method is to make all of my lenses the same filter thread, using step up rings.

Make a list of all of your lenses and their filter sizes and then determine the largest lens you have. The thread is typically determined by a number near the filter thread, that looks like Ø67. It will be a number and this symbol “Ø” If you cannot find the thread size, google your specific lens and you should find the correct size. *For some vintage lenses, I would look them up on Ebay to ensure the lens is the same*

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My largest filter thread is 72mm. Next, I purchase the step up rings for each lens.

I typically make them a little bigger then my largest lens to future proof my filters. Then, I purchase a bunch of lens caps at my specified size and keep a few extra in my bag. 3 Pack Lens caps

This method is also great if you want to only use one filter for all your lenses. Instead of buying multiple, you can focus on getting quality filters.

For details on buying filters click below.

A Guide to Filters for Lenses

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