Arca Swiss Reversing Recessed Lensboard

[Brad Rippe]

I have an Arca Swiss F-Line Field (110 by 110) and was wondering if anyone has reversed a recessed board (15mm, #1) to accommodate a Fuji 450 lens to give a bit of relief for the bellows. I use that lens with the stock bellows and it works well, but the bellows can be maxed out, and it would be great to have just a bit more extension to hopefully avoid the heartbreaking popping sound that precedes bellows failure.
Thanks,
-Brad

[Darren H]

Brad-

I do not have the answer but have had the exact same question for the exact same reason. I have been thinking of getting the 450mm but did not want to have to get the long bellows, so a 110 board with a "tophat" would be great.

I hope someone has an answer on this one.

[john borrelli]

One of the problems with reversing the lensboards is that you will increase the chance of light leaks. The old arca lensboards used foam seals on the inside and the present versions use metal ridges which perform the same function. In the 171mm size that I own they do offer an arca to linhof lensboard adapter. This would allow you to use a Linhof sized tophat. Unfortunately, these adapters are very expensive, if they are available in your lens board size, I would imagine they would be equally expensive. I recently bought a used Arca long bellows for less than the adapter.

[Emmanuel BIGLER]

wondering if anyone has reversed a recessed board (15mm, #1) to accommodate a Fuji 450 lens to give a bit of relief for the bellows.

Brad : Hello from Arca-City ;)

Uncompromising arcaphiles could argue that you just have to add a 15cm extension rail in front of your rail system and be happy. But this would not be the answer to your question since it would need another accessory plus some extra bellows extension ;)

I'll try that and tell you since I have one of those 15mm recessed boards in 110x110 size.
F-line boards are simply machined precisely flat, with precisely rounded corners, I have to check that the "wrong" side of the board is machined flat as well, that the edges are not slanted (I don't think so) in this case I do no see any reason why it should not work. Unlike reversing a recessed board, this trick does need more bellows extension...

One of my arca-friends with his 6x9 showed another 100% harmless trick to gain two centimetres, simply reverse the front format frame on his dovetail. Since F-line format frames are a-symmetrical, the front one is designed to be in the recessed position, by reversing it you'll get a small amount of extra extension. Sure, the focusing knobs & movement locks won't be located at the right place but again it works since bellows frames attachements and boards attachements are identical.

[SAShruby]

Wasn't someone selling extra long bellows here?

Here? (http://cgi.ebay.com/Arca-Swiss-Long-Bellows-for-Compact-4x5_W0QQitemZ120280675933QQihZ002QQcategoryZ15247QQssPageNameZWDVWQQrdZ1QQcmdZViewItem)

[Brad Rippe]

Thanks everyone, I think I'll just try it and see if it works.

John, the current 110 mm lensboards are machined flat and have no foam, so it should work. I could have a top hat made, but I'm sure it would cost more than a new recessed board.

Emmanuel, I've heard of reversing the standards, but I am so used to the knob arrangement now that I couldn't learn it easily.

-Brad

[evan clarke]

I have several of the recessed boards and am a machinist by trade. I will turn one around and see what the issues are. There is a machined recess on the backside which forms the light trap, by reversing it there should be light leak....Evan Clarke

[john borrelli]

I just reread my response.

I did not mean to state that the older style lens board had the foam seals, the seals were on the older style camera body.

At any rate, good luck Brad and good photography!

[evan clarke]

Hi Brad,
I stuck one in my 6x9 and it drops right in. Here a couple images, #1 is the board in the camera and #2 is the back of the board. I think it would work with no problem at all...Evan Clarke

[Brad Rippe]

Thanks a lot Evan,
I'll give it a go.

-Brad

[Emmanuel BIGLER]

I'm too late ;) but yesterday night I tried to mount a similar A/S recessed board in the reverse position and it fits perfectly, both sides on the edge are perfectly flat and the side of the board is perfectly perpendicular to the front and back surfaces so reversing the board will not induce any light leaks.

Now you'll have to bore a #3 hole to accommodate a 450mm lens, but it is easier to bore a #3 hole in a #0 board that filling a #3 hole to accommodate a #0 lens & shutter ;-)

Good luck !

[Brad Rippe]

Thanks Emmanuel, The Fuji 450 lens is in a #1 Copal shutter, yes its easier to make the hole bigger than smaller. Doesn't Arca make a recessed 110 15mm #1 board though?
-Brad

[Emmanuel BIGLER]

Doesn't Arca make a recessed 110 15mm #1 board though?

Hmmmm.... if I look at the old Arca Swiss catalogue in pdf accessible either from the large format web site or from the service company "precision camera works" in the USA, I find this list in 110x110 ; there is a #1 recessed 7mm but no #1 recessed 15 mm, this does make sense since only the shortest focal lengths require the 15mm recessed board !

091000.2 Lens board, 110x110 flat, size "0"

091000.3 Lens board, 110x110 flat, size "1"

091000.4 Lens board, 110x110 flat, size "3"

091001.2 Lens board, 110x110 15mm recessed, size "0"

091004.2 Lens board, 110x110 7mm recessed, size "0"

091004.3 Lens board, 110x110 7mm recessed, size "1"


For the sake of completeness, the list of 141 and (discontinued) 171 boards as of 2006
141mm
091030.2 Lens board 141x141, standard, "0"
091030.3 Lens board 141x141, standard, "1"
091030.4 Lens board 141x141, standard, "3"
091032.2 Lens board 141x141, standard, 18mm rec. "0"
091032.3 Lens board 141x141, standard, 18mm rec. "1"

171 mm
091041.2 Lens board 171x171, standard, 13mm rec. "0" F-line style
091041.3 Lens board 171x171, standard, 13mm rec. "1"
091041.4 Lens board 171x171, standard, 13mm rec. "3"
091040.2 Lens board 171x171, old style, flat, "0" -> Arca-Oschwald style; F-line compatible
091040.3 Lens board 171x171, old style, flat, "1"
091040.4 Lens board 171x171, old style, flat, "3"