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JohnRLewis

Canon 100mm f2.8 Macro and Ikelite 5508.45 manual focus port

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I just placed an order for a Canon 100mm f/2.8 USM Macro, and a Canon 15mm f/2.8 fisheye. I will soon be purchasing housing and ports from Ikelite for my digital rebel.

 

I was wondering how the Ikelite 5508.45 Manual Focus port works. The lens has a fulltime manual focus overide feature. Does that mean I can use this lens in this port as an autofocus, and overide it as needed?

 

The information on the port up at ikelite claims that AF/MF and ratio switches can not be operated. What does that really mean?

 

Am I better off just buying the 5505.45 autofocus flat port?

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Hi John,

 

Yes, you can insert the lens into the port in autofocus mode, and the built-in collar will slide onto the focus ring. You can use the focus knob on the front to over-ride the autofocus if you want. It's pretty cool.

 

Cheers

James

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Always run this lens in AF mode.

 

The 100mm USM macro allows you to make manual focusing adjustments *at all times*, without having to worry about stripping gears or anything of that sort.

 

Ratio switches simply set a limit on the near focusing distance...you won't want to bother with these since you'll be shooting macro anyway.

 

Does that mean I can use this lens in this port as an autofocus, and overide it as needed?

 

Exactly.

 

Am I better off just buying the 5505.45 autofocus flat port?

 

No. Unless you really want to save $20-30 or something like that...

 

~Matt Segal

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