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Forums Lobby GET TO KNOW YOUR CAMERA & MASTER IT Nikon D60/D50/D40 (Open) topic #825
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Subject: "Sigma 50-500 Bigma and Kenko Pro300 1.4X Problem ?" Previous topic | Next topic
NickR Registered since 28th Oct 2005Fri 02-Dec-05 11:23 PM
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"Sigma 50-500 Bigma and Kenko Pro300 1.4X Problem ?"


Letchworth, GB
          

I've just purchased a Kenko Pro300 1.4X teleconverter, I am using it with my D50 and Sigma 50-500 Bigma.

I notice that it can still AF (with some hunting), but the metering seems very unstable. For example, when I focus on something, the metering keeps jumping e.g. between 1/200 and 1/60. Some picture come out ok depending which shutter speed is used when the shot is taken. Some shots are over exposed?
I was wondering if anyone has similar problem? Or know of a workaround.

By the way the Kenko Pro300 1.4X works fine on my Nikkor 300mm F4 AFS.

Nick

Nick ,Hertfordshire, UK

  
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James23p Moderator Awarded for his wide variety of skills, a true generalist both in film and digital photography Nikonian since 25th Apr 2004Mon 05-Dec-05 01:53 AM
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#1. "RE: Sigma 50-500 Bigma and Kenko Pro300 1.4X Problem ?"
In response to Reply # 0

Memphis, US
          

Nick I have read that some of Sigma's HSM lens are only compatable 100% with their EX teleconverters. I can not find the article I read this but try emailing Sigma and Kenko and see what shakes out. Good luck Jim

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NickR Registered since 28th Oct 2005Mon 05-Dec-05 09:14 AM
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#2. "RE: Sigma 50-500 Bigma and Kenko Pro300 1.4X Problem ?"
In response to Reply # 1

Letchworth, GB
          

>Nick I have read that some of Sigma's HSM lens are only
>compatable 100% with their EX teleconverters. I can not find
>the article I read this but try emailing Sigma and Kenko and
>see what shakes out. Good luck Jim
Jim

I tried the 50-500 + Kelko again yesterday, it was only useable in manual focus mode, the light was quite good but the shutter speed was still fluctuating. I probably will not use this combination again unless I particular want to get close to something far away which is unlikely as I am mainly going to shoot Motorcycle Racing.

By the way the Kelko + Nikkor 300mm AF-S F4 worked great.

Cheers

Nick

Nick ,Hertfordshire, UK

  
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Forums Lobby GET TO KNOW YOUR CAMERA & MASTER IT Nikon D60/D50/D40 (Open) topic #825 Previous topic | Next topic
   

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