Date sent: Tue, 15 Feb 2000 18:56:25 +0300 From: Tapani Tarvainen To: eos@avocado.pc.Helsinki.fi Subject: Re: EOS: IS and EOS5 Send reply to: eos@avocado.pc.Helsinki.fi On Tue, Feb 15, 2000 at 05:02:11PM +0200, Pini Vollach wrote: > Yes, IS is working with EOS 5. The big problem with IS on EOS 5 is that it renders CF 4 all but useless: IS is tied to autofocus, and if you have CF 4 set, IS will only be activated when you press the * button, along with AF. Basically this is a symptom of the same cause that makes IS fail with max apertures beyond f/5.6: there's only one control pin for controlling both AF and IS. If you don't care about CF 4 and have no plans to use Canon TC in a combination resulting in max aperture below f/5.6, IS works just fine with EOS 5. The TC problem can be circumvented by using non-Canon TCs (although quality may suffer), but CF 4 can't, as far as I know. -- Tapani Tarvainen From: "Willem-Jan Markerink" To: eos@avocado.pc.Helsinki.fi Date sent: Tue, 15 Feb 2000 20:34:14 +0100 Subject: Re: EOS: IS and EOS5 Priority: normal Send reply to: eos@avocado.pc.Helsinki.fi On 15 Feb 00 at 18:56, Tapani Tarvainen wrote: > On Tue, Feb 15, 2000 at 05:02:11PM +0200, Pini Vollach wrote: > > Yes, IS is working with EOS 5. > > The big problem with IS on EOS 5 is that it renders CF 4 all but > useless: IS is tied to autofocus, and if you have CF 4 set, IS will > only be activated when you press the * button, along with AF. What happens if you switch off AF on the lens itself? > Basically this is a symptom of the same cause that makes IS fail with > max apertures beyond f/5.6: there's only one control pin for > controlling both AF and IS. > > If you don't care about CF 4 and have no plans to use Canon TC in a > combination resulting in max aperture below f/5.6, IS works just fine > with EOS 5. The TC problem can be circumvented by using non-Canon > TCs (although quality may suffer), but CF 4 can't, as far as I know. Is the 5 the only camera affected by this? Or is it just the only camera with CF4, but no separate/second AE-lock button? (the EOS-1 has two different buttons, AE-lock on the left (set for 6s), exp. comp. button on the right; once CF4 is set to 1 the AE-lock button becomes AF-start, while the exp. comp. button becomes AE-lock (still allows exp. comp. btw, by using the thumbwheel, just as with CF4-0). Btw, after tiring my brain with the effect of CF-1 vs CF-0 on those buttons, I decided that I should avoid CF4-0 for this 6 seconds AE-lock effect....while at the same time I would also like to have a completely non-locked AE while pressing the release button (with CF4-1, the release-button half-down becomes AE-lock....so in continous transport mode, exposure wouldn't adapt/change). Never paid attention whether this is possible with one of the CF's on the 1n or 3, or even the 1V. Can one achieve non-locked (realtime) AE, with CF4-1 set? -- Bye, Willem-Jan Markerink The desire to understand is sometimes far less intelligent than the inability to understand [note: 'a-one' & 'en-el'!] Date sent: Wed, 16 Feb 2000 07:30:45 +0300 From: Tapani Tarvainen To: eos@avocado.pc.Helsinki.fi Subject: Re: EOS: IS and EOS5 Send reply to: eos@avocado.pc.Helsinki.fi On Tue, Feb 15, 2000 at 08:34:14PM +0100, Willem-Jan Markerink wrote: > > The big problem with IS on EOS 5 is that it renders CF 4 all but > > useless: IS is tied to autofocus, and if you have CF 4 set, IS will > > only be activated when you press the * button, along with AF. > > What happens if you switch off AF on the lens itself? It works as expected: with CF4:0, shutter button activates IS, with CF4:1 you'll have to press * to activate it, and AF stays off. So yes, you can get IS without AF, you just have to use the focus switch on the lens - you only lose the convenience of CF4. This is especially bad with the 75-300IS, which both focuses rather poorly to begin with and lacks FTM. > Is the 5 the only camera affected by this? I haven't used any other body that has CF4 so I don't know. -- Tapani Tarvainen