Sigma SA Mount

Started 2 months ago | Discussions thread
Tom Schum
Tom Schum Veteran Member • Posts: 9,982
Re: focusing

Jeffry7 wrote:

Maybe this is why the lens makers are flirting with focus by wire. The one macro lens I have with this is a little unsettling to use manually as it seems to change sensitivity as I use it.

Again, this is the camera trying to be "helpful" by changing the aperture for you even if you don't want it to, but the lens is not the culprit here.  Most digital cameras can't help it, and can't be set up to just leave that aperture where you want it to be.  It's a problem that won't go away!

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Tom Schum
Copper: Mankind's favorite electrical conductor

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