Sold 210mm f/6.3 Computar Symmetrigon in Copal 1

[Steve Goldstein]

The Computar Symmetrigon was developed by and produced for Burleigh-Brooks. Its optical design is based on the Topogon, with 4 air-spaced elements. It was offered in three focal lengths, all f/6.3 - 150mm, 180mm, and 210mm. It's specified as having a 308mm image circle at f/22 and infinity so covers 5x7 or whole plate easily and 8x10 with basically no movements.

This copy is generally clean and clear. There are a few dust specs inside the rear cell, but they must have been there when the lens was new as it doesn't appear to have been opened. The shutter speeds sound OK but I haven't timed it It comes with the original lens hood, a cheap 72mm UV filters, and the retaining ring but no caps.

The lens hood was dented when I received the lens. I repaired it as best I could so it's pretty close to round and screws on and off smoothly. Symmetrigon lens shades are made of thin metal and will slightly deform if you squeeze it too hard, making it more difficult to attach or remove. A light touch is needed, as well as attention to starting the threads.

I'm asking $150 including US shipping. Contact me to discuss shipping outside the US. PayPal G+S is fine.

 

[Steve Goldstein]

Anyone at $140 shipped in the US?

 

[Kino]

I see postings that suggest this lens is rather large.

What would be the minimum lens board size that would avoid having to dismount the rear element to mount the board on the camera?

 

[Steve Goldstein]

I don't understand your specific question - there are actually very few lenses where you don't have to remove the rear cell to mount the shutter onto the lensboard! Are you perhaps asking about the necessary hole size in the front standard? The diameter of the rear cell is 72mm so if that will fit through the front standard opening then you're good.

This lens is in a Copal 1 shutter, which is visible in the second photo, so you'll need whatever Copal-1-sized lensboard fits your camera.

The lens is a bit larger bigger than some 210 plasmats even though it's 1/3 stop slower. I guess that may be a tradeoff in the Topogon design. It accepts 72mm filters.