Oly 45 1.8 with Pana GTC1 converter... works !!!

Started May 17, 2012 | Discussions thread
kenw
kenw Veteran Member • Posts: 5,372
Re: Rather different than how you put it.

Great Bustard wrote:

It makes the lens a 90 / 3.6, which is equivalent to a 180 / 7.2 on FF. Big, big difference between a 90 / 3.6 and a 180 / 1.8.

As already discussed in the thread it is a front mounted teleconverter so it is not a 90/3.6 (which would be the case for a rear mounted teleconverter). It would be a 90/1.8 for a properly sized front mount teleconverter.

However, in this case it appears the front element may be undersized for a 90/1.8 so it probably isn't quite that either.
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Ken W
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