- Sigma Eyecup EC-51
Trusted & Verified
Sigma EC-51 Eyecup for EVF-21 Electronic Viewfinder
- Made specifically for the Sigma EVF-21 electronic viewfinder
- Matches the EC-51 eyecup model documented by Sigma
- Supports the standard EVF-21 viewing configuration
- Useful when the EVF-21 requires the EC-51 eyecup model
- Part of the EVF-21 viewing system made for the Sigma FP2
The Sigma EC-51 Eyecup is the standard eyecup specified for the EVF-21 electronic viewfinder. It is a straightforward choice for photographers who need the EC-51 component for an EVF-21 viewing setup and want to match the eyecup model documented by Sigma.
Made for the EVF-21
Sigma lists the EC-51 among the supplied accessories for the EVF-21 and also shows the EVF-21 configured with this eyecup in its official support resources. That model-specific pairing makes compatibility easy to confirm without relying on a generic eyepiece accessory.
Fits the Sigma FP2 Viewfinder System
The EVF-21 is an external electronic viewfinder made exclusively for the Sigma FP2 camera. The EC-51 serves as the standard eyecup in that viewfinder configuration, making it useful when maintaining or restoring the documented EVF-21 setup.
Choose the EC-51 when your EVF-21 requires this specific eyecup model. For shoppers comparing Sigma eyecup options, checking the model number helps distinguish the EC-51 from other eyecups made for different viewfinder configurations.
General
Product:
| Product Type | Eyecup |
| Model | EC-51 |
Compatibility:
| Compatible Viewfinder | Sigma EVF-21 Electronic Viewfinder |
Join the WaitlistCustomers sign up with their email to be added to the waitlist.
Priority NotificationCustomers are notified in the order they signed up.
Checkout Link SentWhen inventory becomes available, a checkout link will be emailed for immediate checkout.
First Come, First ServedAvailability is limited and purchases are first come, first served.
Expected Availability November 2026 . Initial inventory may be limited.
Join the WaitlistCustomers sign up with their email to be added to the waitlist.
Priority NotificationCustomers are notified in the order they signed up.
Checkout Link SentWhen inventory becomes available, a checkout link will be emailed for immediate checkout.
First Come, First ServedAvailability is limited and purchases are first come, first served.
Expected Availability November 2026 . Initial inventory may be limited.
Shipping Policy
Orders of $25 or more qualify for free standard shipping on eligible items.
Most in-stock orders placed before 3PM EST Monday–Friday ship the same business day. View Shipping Policy
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Tab: Frequently Asked Questions
How do I return an item?
How do I return an item?
Returns are incredibly simple. Please log into your account, find your item you wish to return and follow the prompts to make a return. If you do not have an account, click here to find your order and make a return.
Will I receive a full refund when I return an item?
Will I receive a full refund when I return an item?
You will receive a full refund when you return an item in its original manufacturer’s packaging, undamaged and unmarked. If the item you are returning is priced at less than $35, you will be charged a 15% restocking fee. Please note you will not be refunded any shipping charges.
How many days do I have to make a return?
How many days do I have to make a return?
You have 30 days to make a return. During the holiday season, from November 1 to December 31, we extend the return window to 60 days.
My item was damaged in transit. How do I place a return?
My item was damaged in transit. How do I place a return?
If your order has been noticeably damaged in transit, we strongly recommend that you refuse delivery and notify us immediately. Claims for missing items or items damaged in transit must be made within 48 hours of delivery. If there is carrier damage, please contact support@focuscamera.com with your order number and a description of the damage.
There’s an issue with my order, what should I do?
There’s an issue with my order, what should I do?
Oh no! Please contact our customer service team so we can resolve the issue immediately. You can call us on 1.800.221.0828, email us at support@focuscamera.com, or send us a message here.
Can I exchange an item?
Can I exchange an item?
We do not currently offer exchanges. Please return the item you purchased within 30 days and order what you’d like instead.
If I ordered a kit, do I have to return all the items?
If I ordered a kit, do I have to return all the items?
If you ordered a kit, you must return all components and accessories to receive a full refund.
I ordered a product that included a free item. I’d like to return it, do I need to return the free item as well?
I ordered a product that included a free item. I’d like to return it, do I need to return the free item as well?
If you ordered a product that included a free item, you must include the free item with your return. If not, your return will not be accepted and you will not receive a full refund.
Do you offer repairs?
Do you offer repairs?
We currently only offer camera repairs at our Brooklyn store. The item must be dropped off and collected in person as we do not accept shipped items for repair. For more information, please call our Brooklyn store on 1.718.431.7900.
What is your return policy?
What is your return policy?
Most items can be returned within 30 days for a full refund. Click here to read our full return policy.
