One Frame

Clonleagh, Co Wicklow, Ireland

C1117, Clonleagh, Co Wicklow  C1117  11x17 7x17 c1117 camera ulf C1117 Clonleagh, Co Wicklow  C1117  11x17 7x17 c1117 camera ulf C1117 Clonleagh, Co Wicklow  C1117  11x17 7x17 c1117 camera ulf
C1117 at Clonleagh Co.Wicklow
C1117 at Clonleagh Co.Wicklow
C1117 at Clonleagh Co.Wicklow

Clonleagh Co. Wicklow. A few hundred yards upstream from where this tributary joins The Liffey.

This is a very photogenic spot- both times I visited recently, the place was overrun with photographers. Well, I spotted at least four of them...

This picture was made using the 36" Air Ministry Reconnaissance lens that I've mentioned elsewhere. Not a typical landscape lens, it's very large and heavy, and only stops down to f/16. Not in a shutter, obviously, and it's a telephoto, which explains the relatively short bellows draw in the pictures above- that was the actual extension needed to focus on this scene, perhaps thirty yards away.

Kodak TMY, 7x17".

I like this lens, though it's obviously completely unreasonable. It's sharp, though there's hardly any subject it can be successfully used on, particularly in a landscape setting. Depth of field is non existent, and it needs to be used in subdued light to enable the use of the large Packard shutter- the fastest shutter speed is 1/15th of a second.

On the fun side of things, here's an opportunity to compare crop factors- the 35mm equivalent to this 36" f6.3 would be an 85mm, (on 7x17"), just a short telephoto- but the equivalent maximum aperture would be f/0.6. Even stopped down to its maximum f/16, it would produce the depth of field characteristics of an 85mm f/1.5. But enough fun, we're not here for fun...

Rear movements are quite useful with this lens; I'm not tempted to test the front movement control rods with it. Since it's a telephoto, its rear nodal point is quite some way in front of the lens, which makes front movements more challenging than usual anyway...

On the plus side, the Packard isn't quite large enough to clear the front element, but there's no vignetting at all. The image circle is something like 500mm diameter at infinity, which is a really long way away on this lens. The advantage of the telephoto design is that I can focus as close as 4m with the bellows at maximum extension, giving a magnification of somewhere around 0.25x, or to put it another way, a comfortable distance for an upper body portrait.

The camera supports the lens without any problem, though the large low profile Gitzo head is severely stressed when the lens is at full extension, and I do worry that it will break free, if there is no additional support. With the tilt axis tightened as far as it can go, it's possible to induce tilt through the head by adding a little more downward pressure on the lens.

This is the lens which acted as the test load for the design of the camera. The camera supports it easily, and it could take even more weight. However, adding bigger lenses than this one seems excessive, unless it was to be part of a program for testing the system to destruction, which seems just a little unnecessary. Of more value is the knowledge that reasonably sized (and larger) optics are well within the capabilities of the camera.