LAOWA AF 200mm F2 is Coming and This Changes Everything

Richard CR

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Dec 27, 2017
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For quite some time, we have seen the rise of Chinese manufacturing in a variety of fields, where when they first started, their products were rather amusing, but then suddenly, if you blink, they caught up in terms of engineering and quality. A good example of Chinese lens manufacturing and optical capability at the beginning would be 7artisans, who made fun lenses, but it was like putting vaseline in front of your lens when you shot with them.

 
Fabulous news, I've been eyeing up second-hand 200IS recently but will wait and see how this performs.

Outside the GAS-obsessed forums there are a huge number of photographers in the real World still shooting on EF bodies so it's great to see Laowa addressing that market, even if it is a workaround for the RF closed-garden. And no worse than Canon's cynical welding of an RF adapter on the back of its big telephoto primes.
 
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I keep thinking that attaching an extension tube to this will create a long desired replacement for the EF 180mm macro lens.
Then I realize how much I'm addicted to the image stabilization on the 100mm macro.
 
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I keep thinking that attaching an extension tube to this will create a long desired replacement for the EF 180mm macro lens.
Then I realize how much I'm addicted to the image stabilization on the 100mm macro.
You would need a lot of extension (tubes) to reach 1:1 magnification with a 200mm lens. With the lens focused at infinity, you would need 200mm of extension to get 1:1 (100%) magnification. If the lens has a .2 magnification at minimum focus distance, you would need 160mm of extension. Adding that amount of extension to a 2kg lens would be highly impractical (i.e. an accident waiting to happen).

The required amount of extension explains the long barrel length of the EF 180mm macro lens.

See: https://shuttermuse.com/ultimate-guide-to-extension-tubes/ or https://www.scantips.com/copycalc2.html for details on using extension tubes.
Or, for entertainment: https://www.youtube.com/watch?v=Mi_3cCLOFSU
 
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You would need a lot of extension (tubes) to reach 1:1 magnification with a 200mm lens. With the lens focused at infinity, you would need 200mm of extension to get 1:1 (100%) magnification. If the lens has a .2 magnification at minimum focus distance, you would need 160mm of extension. Adding that amount of extension to a 2kg lens would be highly impractical (i.e. an accident waiting to happen).

The required amount of extension explains the long barrel length of the EF 180mm macro lens.

See: https://shuttermuse.com/ultimate-guide-to-extension-tubes/ or https://www.scantips.com/copycalc2.html for details on using extension tubes.
Or, for entertainment: https://www.youtube.com/watch?v=Mi_3cCLOFSU
A good point. Multiple extension tubes would make for a poorly balanced setup with precarious electrical contact.
 
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