Snowflake

Started 8 months ago | Discussions thread
Stephen Barrett
Contributing MemberPosts: 514Gear list
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Re: Snowflake
In reply to Andre W, 8 months ago

Thanks Andrè,
There are two Raynox closeup lenses:

DCR-250
http://www.raynox.co.jp/english/dcr/dcr250/indexdcr250eg.htm

DCR-150
http://www.raynox.co.jp/english/dcr/dcr150/indexdcr150eg.htm

The DCR-250 is the stronger of the two at 8 diopters with a working distance of
1000/8 = 125mm, or about 5 inches.
At full optical zoom on the SX50, the magnification is 215 mm / 125 mm = 1.72 x
(with infinite focus) and the depth-of-field is only about 0.2 mm at widest aperture. With narrower aperture or less zoom, you get more DOF.

The DCR-150 is 4. 8 diopters with a working distance of
1000/4.8 = 208 mm, or about 8 inches.
At full optical zoom on the SX50, the magnification is 215 mm / 208.3 mm = 1.03 x
(with infinite focus).

The Raynox closeup lenses attach with a spring-loaded "universal adaptor", which is what I use and find convenient, although some people prefer to use adapter rings.

If you want to choose just one of them, I would recommend the 150. Even though it is the weaker of the two, it is easier to use and more of the shots are keepers. The larger working distance makes it easier to avoid casting a shadow on your subject and you are less likely to scare insects away.

Focus-stacking is a fun technique for combining multiple shots in order to increase the DOF.
Here is one of my posts with some technical details about DOF, use of macro rails and the Zerene Stacker software:

http://forums.dpreview.com/forums/post/50636595

Here are some of my stacked shots of small flowers taken with the Raynox-150:

http://www.dpreview.com/forums/post/51443590

If you don't want the bother of stacking, you can still get excellent handheld closeup shots. Again, I would recommend the Raynox 150. The price is around $75 U.S. if you shop around (includes the spring-loaded "universal adaptor"). You can have a lot of fun without any extra equipment. If you want to do focus-stacking, macro-rails start around $70 and Zerene Stacker is $89 U.S.

I hope this helps.

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