---
product_id: 56074401
title: "(2 Pcs) Fotasy 37-40.5MM Step-Up Ring Adapter, 37mm to 40.5mm Step Up Filter Ring, 37mm Male 40.5mm Female Stepping Up Ring for DSLR Lens & ND UV CPL Infrared Filters"
brand: "fotasy"
price: "2156 som"
currency: KGS
in_stock: true
reviews_count: 13
category: "Fotasy"
url: https://www.desertcart.kg/products/56074401-2-pcs-fotasy-37-40-5mm-step-up-ring-adapter
store_origin: KG
region: Kyrgyzstan
---

# Slim 0.39 inch profile 37mm to 40.5mm precision fit Anodized aluminum durability (2 Pcs) Fotasy 37-40.5MM Step-Up Ring Adapter, 37mm to 40.5mm Step Up Filter Ring, 37mm Male 40.5mm Female Stepping Up Ring for DSLR Lens & ND UV CPL Infrared Filters

**Brand:** fotasy
**Price:** 2156 som
**Availability:** ✅ In Stock

## Summary

> 📸 Elevate your lens game—step up your filter style with precision and flair!

## Quick Answers

- **What is this?** (2 Pcs) Fotasy 37-40.5MM Step-Up Ring Adapter, 37mm to 40.5mm Step Up Filter Ring, 37mm Male 40.5mm Female Stepping Up Ring for DSLR Lens & ND UV CPL Infrared Filters by fotasy
- **How much does it cost?** 2156 som with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.kg](https://www.desertcart.kg/products/56074401-2-pcs-fotasy-37-40-5mm-step-up-ring-adapter)

## Best For

- fotasy enthusiasts

## Why This Product

- Trusted fotasy brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Slim & Sleek Design:** Ultra-thin profile ensures no vignetting or light leaks, preserving your image integrity.
- • **Premium Build Quality:** Crafted from high-grade anodized aluminum for a lightweight yet rock-solid, wobble-free connection.
- • **Effortless Installation:** Smooth threading guarantees quick, secure attachment with zero cross-threading frustration.
- • **Universal Compatibility:** Seamlessly upgrade your 37mm lens to fit 40.5mm filters and accessories without hassle.
- • **Cost-Effective Versatility:** Maximize your filter investment by using one set across multiple lenses—smart, sustainable, and stylish.

## Overview

The Fotasy 37-40.5MM Step-Up Ring Adapter is a durable, anodized aluminum accessory that converts 37mm lens threads to 40.5mm, enabling compatibility with a wider range of filters and lens attachments. Its slim design prevents vignetting and light leaks, while precision threading ensures a secure, wobble-free fit—making it an essential tool for photographers seeking versatility and quality in their gear.

## Description

The Step Up Filter Rring adapter easily screws onto the front of any 37mm lens, and converts the thread size of your lens the thread size of any other 40. 5mm accessory (such as filters, hoods, flashes and lens converters). Made of high quality anodized black aluminum (metal). Color: Black. Extremely solid and lightweight. Specifically designed for your camera for a tight and secure fit. No wobbling or cross-threading. Your camera's lens thread size will be marked somewhere on the lens barrel. This number is always preceded by a "Ø" (diameter) symbol. For example: 37 = 37mm lens thread size. This number can also often be found printed on the back side of your lens cap.

Review: Perfect Fit and Solid Build - This 49-67mm step-up ring adapter is exactly what I needed to use my 67mm filters on a 49mm lens. The metal construction feels sturdy and high-quality, with smooth threading that attaches securely without any cross-threading or wobble. No light leaks, no vignetting — just a perfect, seamless fit. It’s a simple tool, but super effective and a great way to save money by using one set of filters across multiple lenses. Definitely a must-have for any photographer building out their kit!
Review: It just works. - They go on easy, no problems with vignetting or colors, very strong metal and have had no glare at all. Very slim too.

## Features

- This step up ring adapter easily screws onto the front of any lens with 37mm filter diameter, and converts the thread size of your Lens to the thread size of any other 40. 5mm accessory
- The male side: 37mm
- The female side: 40. 5mm
- Made of high quality anodized aluminum and polished with strict surface treatment to avoid wobbling or cross-threading, combined with a slim design makes this ring durable and functional.
- Suitable for a wider variety of filters, adapters, Hoods and more.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B007GX2V9C |
| Best Sellers Rank | #4 in Filter Step-up Rings |
| Customer Reviews | 4.7 4.7 out of 5 stars (1,789) |
| Date First Available | August 23, 2011 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 1 ounces |
| Item model number | FR3740.5 |
| Manufacturer | Fotasy |
| Product Dimensions | 1.57 x 0.39 x 1.57 inches |

## Product Details

- **Brand:** Fotasy
- **Coating Description:** No Coating
- **Global Trade Identification Number:** 07594905863455
- **Material:** Aluminum
- **Photo Filter Effect Type:** Ultraviolet
- **Photo Filter Size:** 37 Millimeters
- **Photo Filter Thread Size:** 37 Millimeters
- **Product Dimensions:** 1.46"L x 1.46"W
- **Water Resistance Level:** Not Water Resistant

## Images

![(2 Pcs) Fotasy 37-40.5MM Step-Up Ring Adapter, 37mm to 40.5mm Step Up Filter Ring, 37mm Male 40.5mm Female Stepping Up Ring for DSLR Lens & ND UV CPL Infrared Filters - Image 1](https://m.media-amazon.com/images/I/61ihQKcieLL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Perfect Fit and Solid Build
*by J***A on April 10, 2025*

This 49-67mm step-up ring adapter is exactly what I needed to use my 67mm filters on a 49mm lens. The metal construction feels sturdy and high-quality, with smooth threading that attaches securely without any cross-threading or wobble. No light leaks, no vignetting — just a perfect, seamless fit. It’s a simple tool, but super effective and a great way to save money by using one set of filters across multiple lenses. Definitely a must-have for any photographer building out their kit!

### ⭐⭐⭐⭐⭐ It just works.
*by W***L on October 26, 2025*

They go on easy, no problems with vignetting or colors, very strong metal and have had no glare at all. Very slim too.

### ⭐⭐⭐⭐⭐ High quality product (better than expected)
*by R***I on November 17, 2025*

These adaptors work perfectly well, they have excellent finish, and they actually look better than what you can see in the product pictures.

## Frequently Bought Together

- (2 Pcs) 77-82MM Step-Up Ring Adapter, 77mm to 82mm Step Up Filter Ring, 77mm Male 82mm Female Stepping Up Ring for DSLR Camera Lens and ND UV CPL Infrared Filters
- K&F Concept 82mm Variable ND2-ND400 ND Lens Filter (1-9 Stops) for Camera Lens, Adjustable Neutral Density Filter with Microfiber Cleaning Cloth (B-Series)
- Kase 67mm to 82mm Conventional Step Up Filter Ring Adapter

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**Shop now:** [https://www.desertcart.kg/products/56074401-2-pcs-fotasy-37-40-5mm-step-up-ring-adapter](https://www.desertcart.kg/products/56074401-2-pcs-fotasy-37-40-5mm-step-up-ring-adapter)

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*Product available on Desertcart Kyrgyzstan*
*Store origin: KG*
*Last updated: 2026-01-25*