cheap and close-focusing or large aperture ultrawide angle lens?

[Pherdinand]

hello all!

For a project in my mind i am looking for a very wide angle lens that can cover some 2m / 6feet from a distance of 1m/3feet. I am looking for one that can blur the background efficiently i.e. either:
1. can focus very close or
2. has a very large aperture.

I know this would go very expensive BUT i am NOT looking for superb image quality...thus i am ready to go for a cheap version as long as it is cheap.
Format and brand does not matter too much: it should be 35mm or medium format (or below 35mm) and if it's medium format, it should be for a camera that is relatively affordable and easy to find (e.g. hasselblad swc does NOT qualify).
I want film version.

Any ideas?
thanks

 

[venchka]

My LUG Gallery entry says that this was taken with a 50mm DR Summicron. I think I was on drugs when I wrote that. I will double check. I'm pretty sure this photo was taken with the Pentax 45mm lens on Pentax 6x7 at minimum focus distance of 14" and wide open (f/4.0) or close to it.

Camera and lens are in the $500-$600 range. Cheaper if you get lucky.

 

[sevo]

Cheap and ultrawide? Vivitar Ultra Wide & Slim - it even has a camera attached...

 

[venchka]

ps: I will put the 45mm lens on the camera tonight and check horizontal F.O.V. at 3 feet.

 

[ruby.monkey]

Try KEH for a Mamiya 645J and 35mm f3.5C.

 

[Pherdinand]

thanks guys. keep'em comin, ideas!

 

[david.elliott]

get close up diopters or an extension tube for your existing gear?

 

[Bob Michaels]

My mental calculations tell me that exactly a 90 degree FOV will give capture a scene 2 meters wide at a distance of 1 meter. But it has been 50 years since I was in high school trig or geometry class and I am going from memory. Maybe someone with a more recent math education that remembers how to do all those trig functions can confirm that. And a 90 degree FOV equates to a 21mm lens on a 35mm camera as I remember.

 

[Tim Gray]

My mental calculations tell me that exactly a 90 degree FOV will give capture a scene 2 meters wide at a distance of 1 meter.
...
And a 90 degree FOV equates to a 21mm lens on a 35mm camera as I remember.

Correct on number one. And for number two, a 21 does give you a 90 degree FOV, but only on the diagonal. If you want it on the horizontal, you'd need to go down to an 18mm.

Obviously other formats, both sizes and aspect ratios, will change the second part.

 

[venchka]

I can confirm what Bob & Tim said. Sorta. I put the 45mm lens on the Pentax. Diagonal FOV roughly 88 degrees or 22mm on 35mm film. Horizontal FOV at 1 meter was a little more than 1 meter.
So, a shorter focal length lens is in order. I do have a 17mm focal length for 35mm format. I'll investigate this weekend.

 

[MartinP]

Don't totally discount the superwide Kiev-60 mount lens - but you won't get much differentiation of d.o.f. with that thing.

EDIT: Just remembered that I saw a Holga fisheye thing in a shop. Maybe those are possible too.

 

[sanmich]

how about an SLR + spacer rings + wide angle lens?

 

[mfogiel]

The only type of wide angle lens that will blur strongly the background from 2 meters is probably a LF lens, although these normally come with small max apertures. The best second should be the 21/1.4 Leica Summilux, but the price may be somewhat high.