RF 200-800 Lens Design Issue - Filter can't be used with hood

[MadJack70]

A friend of mine was lucky enough to have received her Canon RF 200-800mm lens that she had ordered in Nov. 2023.  She has encountered an issue with the lens design.   The new lens does not appear to allow use of a filter while the lens hood is in place.  She and her camera shop have tried a number of different brands of filters, but none appear to allow the lens hood to be mounted while a filter is attached.  This seems to be a rather inexcusable design flaw on Canon's part.  When Canon technical support was contacted, no one appeared to know anything about the issue.  With the exception of this problem, she loves her new lens.  Has anyone else encountered this issue with this lens?

[MadJack70]

My friend checked and she definitely has the Canon ET-101 hood.  The hood however is black not light gray.  I then checked Canon's site and they also show a black hood for that lens.   I did get the model of the filter she had been sold, a Promaster HGX Prime 95MM Protection UV Filter.  I still do not know what other filters the Canon dealer tried.  She is going back to the dealer this weekend and I will let you know what they try to resolve the issue.  Thanks for your input.

[Glurum]

I have the same filter and I'm having the same issue. Have not tried other filters yet.

[Tronhard]

I have had the 200-800 for about 3 months now and have had absolutely no issue in putting a filter on the unit along with the lens hood.  I use a Sirui protect lens filter but have also mounted B+W ones for protection and for Polarizing.   When you say that the filter cannot be mounted, is this before or after the hood is attached?   I put the filter on before I ever mount the hood and leave it there.
Like my colleague Rick, I have never heard of this phenomenon occurring:  I checked with several other users and talked to a couple of my local stores, and they have never had an issue with this either.
Given that, it sounds more like an individual component issue rather than a systemic or design one.
The easiest option would be to try a different lens hood unit and see if there is a fault in the one they have - perhaps the camera store can arrange a temporary swap for the experiment, 

[MadJack70]

Tronhard, thank you so much for your input.  I will pass it along to my friend.  Her issue is that once she screws a filter into place on the lens, the Canon lens hood provided will not fit over that filter to attach to the lens.  I am beginning to wonder if Canon supplied her with the correct hood.  I do also have a number of B+W filters to try on her lens.  I also have a recently purchased Canon Protect Filter to try.   She had tried a third-party hood that was supposed to fit the lens, but still was unable to use a filter with that hood.   Perhaps it is her individual unit that is the issue.   I do know that she was the first buyer in the state of Michigan to purchase the lens when it first came out in December.  Again, thanks so much for the feedback.

[shadowsports]

Cheers Trevor.  I suspected there wasn't a systemic issue out there 😄

[Waddizzle]

Any news updates?

Are you ble to mount the hood without a filter?  

Can you reverse the hood and mount it in a storage position?  Without a filter?

[MadJack70]

The RF 200-800mm lens that I had ordered for my wife last November was delivered from B&H Photo today.   I had no issues using the lens hood using either of the two spare 95mm filters that I had on-hand.  The B+W Digital MRC F-PRO UV-Haze and Canon 95mm Protect filters both worked just fine with the Canon ET-101 hood that was provided with my wife's lens.  I have not yet heard back from our friend regarding the hood issue with her RF 200-800 lens that she received last December.  I do know that her hood fits fine on the lens in either facing position as long as no filter is in place.  I will provide additional information as it becomes available. 

[Tronhard]

I got my 200-800  five months ago and have had no issue with my filter, which is a B+W protect filter - used to keep environmental materials, such as dust, sand and salt off the expensive front element of the lens. 

If you get a good lens, never put a cheap filter on - it basically degrades the image and the investment one has just made.   Prograde filters are anything but...

[Glurum]

I am also having this issue. I have the promaster uv filter and hood will not fit correctly. 

[shadowsports · Accepted solution]

Greetings,

I may have found the answer.  Both users reporting issues have the "Promaster"

• Thread size: 95 mm
• Outer diameter: 100 mm
• Frame thickness: 8.2 mm
• Lens thickness: 2.0 mm
• Coatings: 22 layers
• Light transmission rate: 98.2% (average at 400 - 700 nm)
• Reflection: less than 0.3% (average at 420 - 680 nm)
• UV cutoff: 390 - 400 nm
• Made in Japan

The thread size is 95mm, the outside diameter is 100mm (thats +5mm) and the frame is 8.2mm tall.  The light transmission is 98.2.  I'd return or exchange it.