Which RRS Arca Swiss style Q/R plate for Ebony SV45U

[bulent_ozgoren]

I would like to know if anyone knows which Really Right Stuff (RRS) mounting plate is right for Ebony SV45U. I prefer the largest plate possible. Thank you all in advance.

[ellis_vener_photography]

brian geyer at Really Right Stuff knows. Call heim.

[georges_pelpel]

I am using an LP-35 plate from Kirk Photo on my Wisner PE. It is

5" long and works great. Should fit your Ebony.

I recommend you have 2 tripod sockets on your camera. It

makes the long plate a lot more stable.

[michael_alpert1]

Bulent,

 

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Please excuse this response, which I realize does not directly answer

your question. I do not think it is a good idea to use a quick mounting

plate with your Ebony. While you are focusing, etc., it is just too

easy to turn the wrong knob and drop your camera.

[georges_pelpel]

In response to Michael I agree there's a certain risk about

forgetting to tighten the knob but the risk of having the camera fall

is greatly reduced when using a long plate (4" to 5").

Tightening the knob is very quickly become a reflex and the

advantage of using a long plate overcomes any inconvenience.

The long plate allows you to position of center of gravity of the

camera/lens combo just above the tripod head axis for better

stability. It is very useful when using heavy lenses such as the

360 or 400 teles.

[tim_atherton2]

are we talking personal experience here.... It is a bit of a stretch

for this to happen - I've uses my Toyo 4x5A, Super Graphic and

Deardorff all monted on plates and an Arca ball head and never

remotely come close to this problem.

 

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tim

[michael_alpert1]

Tim, to answer your question: Well, I've never actually dropped a

camera, but I have in the thick of taking a photograph loosened the

Arca-Swiss knob by mistake. I took it to be a warning shot across my

bow, so to speak, and switched to a standard head. A single mistake can

be costly. Anyway, it takes about three seconds to screw a camera to a

head, and the added safety is worth that miniscule amount of time, as

far as I am concerned.

[tim_atherton2]

Hi Michael,

 

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Personally, I've had the tripod screw loosen on me many more times

(especially carrying the setup around over my shoulder) than I've

come close to undoing the release plate. I guess there's potential

either way

 

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tim

[steve_hamley2]

Bulent,

 

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I'm at work now but I have the RRS-recommended plate on the Ebony

SV45U. It is a rather small plate, but it does have a 3/8-16 screw

instead of the usual 1/4-20, which makes me at least feel a lot

better. Remember, the plate itself doesn't hold anything, the screw

does. I'll post the part number when I get home.

 

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Thanks!

 

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Steve

[danny burk www.dannyburk.]

I've commented to Bulent via email that IMO the best plate by far is

the Wimberley P50. While I use RRS plates for most of my equipment,

their recommended plate is a small rectangle with a single screw. It

swivels and twists, and is not a good solution...I formerly used one,

and happily gave it up in favor of the Wimberley.

 

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The Wimberley plate is intended for 35mm super-tele lenses, and is

the perfect choice for 4x5 if your camera can be attached by two

screws (as is true for Ebony). The plate is about 6" long; since it

provides two screws, it cannot slip or swivel on the camera. It also

has a built-in bonus due to its length, since one can adjust the

exact positioning of the camera from front-to-back on the tripod

head. You can reposition your camera at its ideal center of gravity

when using a heavy lens or lots of bellows extention, or use it as

you would use a focusing rail for closeup work.

 

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You can get Wimberley plates from B&H or by going to

www.naturephotographers.net's "gift shop" page.

 

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Regards,

Danny www.dannyburk.com

[steve_hamley2]

Bulent

 

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The RRS plate is a B22, 55 USD. The Ebony SV45U has only one

mounting screw, either 3/8-16 or 1/4-20 with insert. The bottom

plate of the Ebony is mounted on top of the wood, so any plate wider

than the bottom plate is useless because it will not be in contact

with the camera. A RRS B-29 plate looks the same except longer (and

will be in contact with the bottom plate) and still uses the 3/8-16

screw. Both the B-22 and B-29 have the anti-twist lip.

 

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I wouldn't mind having a bigger plate myself, but the RRS anti twist

lip works and I'd rather have the 3/8-16 screw securing it than a

larger plate with a 1/4-20. The Arca-Swiss universal plate with 1/4-

20 screw also has a large groove in the middle which doesn't contact

the camera bottom plate, and it will twist on the SV45U, I've tried

it. Two screws would be better, but it isn't going to happen.

 

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Thanks!

 

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Steve

[danny burk www.dannyburk.]

Hmm, I have an SV45U2, but I'd be surprised if Ebony uses a special 2-

screw plate for it alone when it's otherwise very similar to SV45U.

Perhaps Ebony has changed their plate style over time; my camera is

not quite 2 years old and it definitely has two screw holes!

 

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I don't remember the model of the RRS plate that I formerly used, but

it didn't have an anti-twist lip. It was completely flat on both

sides, and would periodically need to be re-tightened lest it come

loose. On one occasion it did come entirely loose, ending shooting

for the rest of the day since that was naturally the one time that I

didn't have the necessary Allen wrench with me :(

[bulent_ozgoren]

Thank you all for your contributions. I could not reply any earlier

due to health reasons.

I learned that there is only one screw hole on the SV45U, the size is

3/8.

I am waiting a reply from RRS as which model plate is suitable. I'll

let you know as soon as I find out. Best regards. Bulent

[lars ake vinberg]

As a data point, I use and can recommend a RRS B29 plate for my Ebony

SW23 (used to use that plate on a Toyo 45 AX). The SW23 base plate is

57mm (2.25") square.

 

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Titanium seems to be a high-friction metal (unlike brass), so when

tightened the plate is completely rigidly mounted, will not slip for

any lesser force than will likely break the camera. Even without

using the lip of the plate there is zero slippage.

 

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Åke

[bulent_ozgoren]

Ake

Thank you for your post.

I gather B29 is the popular model for Ebony SV45U and will eventually

order one.

Best regards

Bulent Ozgoren