[LRflex] adapter + bellows
- From: Douglas Sharp <douglas.sharp@xxxxxx>
- To: leicareflex@xxxxxxxxxxxxx
- Date: Sun, 08 Jul 2007 11:14:27 +0200
Thanks, David
I'd forgotten all about the "extension factor" - there's too much
automatic stuff around that lets you forget the basics.
I tried it out yesterday evening with UBL (UltraBrightLED) lighting,
cold, very bright and constant day light temperature light - much better
than flash - and it works perfectly.
Cheers
Douglas
David Young wrote:
> BTW, has anyone else tried using the focus confirmation adapters
> with bellows for macro work?
> Neither M42, CY nor Leica-R will light up the focus lights on my 20D
> or 300D, the macro lenses + adapter without bellows confirm the
> focus perfectly.
>
>
> The problem is with the amount of light reaching the AF sensors, not
> the adapter.
>
> With my 400 f6.8 Telyt, the FC works fine. If I close it down to f8,
> it's problematic. If I put the 2x converter on it (f13.6 wide open)
> it's dead in the water.
>
> With a bellows, the effective f-stop quickly becomes less than f8,
> and the AF sensor in your camera cannot function.
>
> Not the answer you wanted? ;-)
>
> Cheers!
>
>
>
>
------
Unsubscribe or change to/from Digest Mode at:
http://www3.telus.net/~telyt/lrflex.htm
Archives are at:
//www.freelists.org/archives/leicareflex/
Other related posts:
