40D vs D90

[belial]

Somewhat true, but honestly the only Nikon lens that I'm aware of Canon uses using is that awesome wide-angle lens (I forget which one specifically). The thing is whilst you can use Nikon lenses on a Canon camera body you lose a few features (af) and have to jump through some hoops to get others (aperture control). The result is that barring one or two specialist lenses its really far easier just to use Canon lenses on Canon camera bodies (especially since the gain is often minimal to negligible between the two brands for most common lenses).

Actually overread check it they have adapters with built in aperture control now. It's not electronic but has a ring and while you lose af you maintain focus confirm. And you maintian metering. Not a heavy compromise to me

 

[Overread19 7]

I've oft wondered about those adaptors - some of them (I think most) are they not where the adaptor itself has its own aperture blades inside it - thus changing the nature of the aperture blades to those in the adaptor? That could be an issue on higher end lenses since aperture blades and "roundness/smoothness" of the blades can be important factors in the quality of a lens.

Barring the Nikon lenses with manual stop down aperture sliders on the side which you can use manually (and which thus slows you down considerably - good for static but very hard for action shots).

 

[belial]

I've oft wondered about those adaptors - some of them (I think most) are they not where the adaptor itself has its own aperture blades inside it - thus changing the nature of the aperture blades to those in the adaptor? That could be an issue on higher end lenses since aperture blades and "roundness/smoothness" of the blades can be important factors in the quality of a lens.

Barring the Nikon lenses with manual stop down aperture sliders on the side which you can use manually (and which thus slows you down considerably - good for static but very hard for action shots).

I believe the one I was looking at operates the pin in the lens. Not fully sure though. Nikon does use a pin based system to control aperture since they wanted their system to be compatible with the heritage lenses. I guess we can hope Deryl finds this thread and clarifies

 

[belial]

Here's the adapter I was looking at. It doesn't say but I don't see enough room in the pictures to place aperture blades do pretty sure that's not how it works. Would love to know as I was planning one in the future

http://www.ebay.com/itm/AF-Confirm-...ounts_Tubes&hash=item4cff23d1af#ht_5702wt_810

 

[Overread19 7]

Hmm scroll down - they've a bit of the description in bold red - sadly whilst you have a lever on the side to operate the aperture, you've still got to manually control the blades. The cameras auto aperture control won't work, just like the AF won't work automatically.

It's good for a landscape lens or any other situation where you can pause to take the photo, but more tricky for regular shooting.

 

[Ajecphotos]

Got a D90 now!! Looking for a 50mm to go with it now!