Step-Up Adapter M40.5-M49



Step-Up Rings by Midwest Optical Systems (MidOpt)

  • Use larger diameter filters on lenses with smaller diameter filter threads
  • Often mandatory for shorter focal length lenses in order to prevent vignetting
  • Available sizes: SU22.5-25.5 - SU77-105
  • Commonly referred to as a thread adapter

Step-Up Rings are most commonly used to adapt a larger diameter thread on items such as ring lights and filters to a smaller diameter thread (generally the thread on the lens).

Smaller diameter thread is male, larger diameter thread is female.

Adapter Properties

Male Thread M40.5
Female Thread M49
Manufacturer Midwest Optical Systems

Step-Up Ring Downloads



Payment & Security

American Express Apple Pay Diners Club Discover Meta Pay Google Pay Mastercard PayPal Shop Pay Venmo Visa

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

Estimate shipping

You may also like

Recently viewed