close-up lens - Photography Help Forum

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Q. close-up lens

Asked by Amy Scott (K=290) on 3/14/2005

I have a Canon Rebel 2000 with and 28-105 lens and am trying out a Hoya close-up lens set. When I put a Hoya lens on the camera doesn't focus and when I look through the viewfinder, the image looks awful. What's wrong?

Lea Mulqueen (K=7396) - Comment Date 3/14/2005

Amy, those screw on close up lenses are very difficult to use. They work best if you switch your auto focus lens to manuel focus and move the camera 'till the subject is in focus. Depending in which lens is attached to your camera and which close up lens you are using, you may have to be extremely close to the subject. Also, when using them you have very minimal DOF so you must use a fairly small aperature like f16 or even smaller to get anything that isn't absolutely flat in focus. And you absolutely must use a tripod and cable release or self timer.
Hope this helps!

Adam E. J. Squier (K=9803) - Comment Date 3/16/2005

Close up diopters can be very good. The DOF isn't any less than using a regular Macro lens or extension tubes (with the same magnification). As with most macro subjects, usually the longer the lens, the easier it is to work with. I'd put your 28-105mm lens on 105, put the close up diopter on it, and have fun.

They're much easier to use than extension tubes, you have no loss of light, and, if you get a good, two-element design, they're very high quality.

Your camera is probably not focusing because you lose infinity focus. Depending on the strength of the diopter, your furthest focusing distance may be only 6 inches or so. Get closer to the subject and see if it comes into focus.

Patrick Ziegler (K=21797) - Comment Date 3/20/2005

Lea, Or a good macro flash set up to eliminate camera shake. I have had real good luck using my canon speedlight in ettl mode and bouncing it into the subject.

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