greglyon Posted July 2, 2005 Share Posted July 2, 2005 I decided to try out my K1 ring with my D70 and kit lens just for kicks. In case you don't know about this setup, the K1 ring is a very thin extension tube for wide angle lenses. Since it transmits no lens info to the camera it renders my 18-70 as a manual lens. Also, since it's a G lens that means I'm stuck with minimum aperture, f22. That's OK though since it's gonna be a macro shot and DOF is hard to come by. Everything seems to mount OK with reasonable clearance between contacts on the camera, lens and the K1 ring itself. I was afraid I'd have to modify my K1 ring somehow, but it doesn't appear to be necessary. (However, you take full responsibility if you try it and it breaks something on your lens or camera!) A quick test showed me that the area of focus is from about 3/4" in front of the lens to about 1 1/4" at minimum focus; about 1" to 2" at infinity focus. This lens isn't known for it's straight lines anyway...but they really distort at this magnification. Also C.A. was pretty extreme. In photoshop CS camera raw I moved both sliders to +100 to limit it somewhat! All said, it should make for some interesting closeups.<div></div> Link to comment Share on other sites More sharing options...
greglyon Posted July 2, 2005 Author Share Posted July 2, 2005 And, here are some ruler shots that show the zone of focus...<div></div> Link to comment Share on other sites More sharing options...
albinonflickr Posted July 3, 2005 Share Posted July 3, 2005 Thanks, Greg! Those are interesting results. Glad you took the trouble of showing us. Link to comment Share on other sites More sharing options...
vivek iyer Posted July 4, 2005 Share Posted July 4, 2005 If you have, try the 16mm f/3.5 fisheye with a K1 ring far better than the 18-70 kit zoom in terms of distortion, color fringing (none) and resolution (as good as any micronikkor). Link to comment Share on other sites More sharing options...
greglyon Posted July 5, 2005 Author Share Posted July 5, 2005 I don't have one of those, but it's one I will have to get someday...It sure seems to have a good reputation. Thanks Vivek. Link to comment Share on other sites More sharing options...
vivek iyer Posted July 5, 2005 Share Posted July 5, 2005 Here is a quick shot, Greg. Mixed lighting (tricky), f/8, K1 ring, 4 seconds. not corrected in anyways. The placement of the subjects (orientation of the camera) is very important in hiding the fisheye distortions.<div></div> Link to comment Share on other sites More sharing options...
greglyon Posted July 5, 2005 Author Share Posted July 5, 2005 Damn! That's sharp! ARRRGH...I feel a case of NAS coming on strong... Link to comment Share on other sites More sharing options...
vivek iyer Posted July 5, 2005 Share Posted July 5, 2005 You are easy to convince! Here is a better shot in (more or less) daylight.<div></div> Link to comment Share on other sites More sharing options...
vivek iyer Posted July 5, 2005 Share Posted July 5, 2005 Without the K ring, the lens is much better!<div></div> Link to comment Share on other sites More sharing options...
vivek iyer Posted July 5, 2005 Share Posted July 5, 2005 I'll post small crops from the above photo.<div></div> Link to comment Share on other sites More sharing options...
vivek iyer Posted July 5, 2005 Share Posted July 5, 2005 2<div></div> Link to comment Share on other sites More sharing options...
vivek iyer Posted July 5, 2005 Share Posted July 5, 2005 Another<div></div> Link to comment Share on other sites More sharing options...
vivek iyer Posted July 5, 2005 Share Posted July 5, 2005 Last one.<div></div> Link to comment Share on other sites More sharing options...
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