I watched a video by Micael Widell recently that reminded me the Raynox DCR-250 close-up filter is a good value given its versatility.
Before I bought the Raynox close-up filter many years ago, I was skeptical that it would work. I still can’t explain why it works with many lenses I own including both macro- and non-macro lenses, but I can tell you with certainty it does work and works well!
Canon 100mm macro lens
The Canon 100mm macro lens has a maximum magnification of 1:1. Micael Widell says adding the Raynox DCR-250 close-up filter to the lens increases the magnification from 1x to 2x. According the B&H Photo Specs page for the Raynox DCR-250 close-up filter, its magification is 2.5x.
Calculating magnification is tricky and not as straightforward as one might think. In this case it doesn’t matter whether Mr. Widell or B&H Photo is correct, the fact of the matter is adding a Raynox DCR-250 close-up filter to your lens should at least double the magnification.
The first photograph shows the following equipment, couterclockwise from the upper-left: “snap-on universal adapter” for Raynox DCR-250 close-up filter; Raynox close-up filter mounted on a 52-43mm step-down ring; and a 67-52mm step-down ring.
The Raynox DCR-250 close-up filter comes with a “snap-on universal adapter” for mounting the filter on lenses with a filter size from 52-67mm. The universal adapter clips on the front of a lens the same as a lens cap. That’s OK for use in a photo studio but less than ideal for use in the field. In my opinion, it’s better to use inexpensive step-down rings to mount the close-up filter more securely.
The Rube Goldberg rig shown above has a lot of parts, but for the purpose of this blog post focus on the Canon 100mm macro lens and Raynox DCR-250 mounted on the lens using nested 67-52mm and 52-43mm step-down rings.
In case you’re wondering whether vignetting is a problem when using two step-down rings with the Canon 100mm macro lens, it isn’t. As it turns out, the front lens element is recessed quite a bit from the lens barrel so the step-down rings cover little if any glass.
Panasonic Lumix superzoom bridge cameras
Both my Panasonic Lumix DCR-150 and DCR-300 superzoom bridge cameras feature a 52mm filter thread size. So it’s simple to use a 52-43mm step-down ring to mount the Raynox DCR-250 close-up filter on either camera lens.
The camera lens will need to be adjusted for at least some slight telephoto zoom in order to eliminate the vignetting caused by mounting a 43mm filter on a lens with a 52mm filter size.
Both cameras feature a 24x zoom lens, so when the Raynox DCR-250 is added to the kit the actual magnification will vary depending upon the focal length for which the camera lens is set.
Related Resources
- 3 Ways to Increase Your Macro Lens Magnification from 1x to 2x! by Micael Widell (7:15). (00:54) 1. Raynox filter. (02:22) 2. Extension tubes. (05:13) 3. teleconverter (called an “extender” by Canon).
- A Guide To Using Raynox Close Up Lenses on the FZ200 Camera by Graham Houghton – “A fairly comprehensive look at the selection and use of the Raynox macro lenses [close-up filters] that are available for achieving close up images with the FZ200 camera.”
- RaynoxAdapterCalculator – another good resource from the Extreme Macro Web site.
- Sensor Size and Magnification – correcting a common misunderstanding, by Allan Walls Photography (20:02). The video segment from 5:48 to 14:33 is money, especially the discussion related to the “Thin Lens Formula” beginning around 11:24.
- Sensor Size Matters – Part 1 (the Front Half) – A Demonstration, by Allan Walls Photography (19:51). This demonstration is follow-up for the preceding video.
Copyright © 2021 Walter Sanford. All rights reserved.
Tags: gear talk
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