Using Aperture Ring Is Permitted

Is there any downside to leaving the [36. Using aperture ring] set to [Permitted] in [C Custom Setting] menu on the K-20D?

I can't imagine that there is. But OTOH why is the option there, and set to [Prohibited] if it can safely be enabled at all times?

Only rationale I can think of is as a warning against shooting on an A lens with the aperture ring not set on A. But if that's the goal then locking up the entire camera for dead seems a very draconian measure when something as simple as turning off or otherwise error flagging the F display would seem to suffice as a notification. So I'm thinking there may be more to this after all?

Reason I ask is that it's tedious changing the menu item when simply switching from a DA lens to a K lens and back.

TIA!

AFAIK the only reason for this setting is so that newbies are forced to find out how to shoot manual lenses as it does the flashing "F---" message and refuses to fire, so they have to learn about Stop-Down Metering.

Once you have set it to "Permitted" you can forget this menu setting forever, there is no need to change it back again!

Yes, just forget it apart from helping people on the fora who have just bought an old lens and wonder why it doesn't work. It must be the most FAQ of all FAQs!

Best wishes, K.

Thanks guys. Already forgotten about!

[quote="womble"]
... fora ...[/quote]Fora & Forums

Fora & Forums[/quote]Taken from the link given.

K.

That link raised the question of how to use the word data. In recent years, people have tended to say: "the data are..", rather than: "the data is.." which is what used to be common.

Whatever its origins, in my view data is (normally) a collective noun in English, and should therefore be treated like other collective nouns. The milk is bad, and so is the data.

Discuss...

G

I'm with you George. I have no idea if that's right or not, just that; "the data are..." sounds completely alien to me. I will continue using "is".

What would have been logical about this whole non-A lens feature is the following behavior:
- in Av mode, the camera could permanently stop down the lens (think m42 here). I don't think the camera has to apply a constant force to do this (but if this is the case, then the solution could be to stop-down the lens on half-press only).
- DoF preview would then serve to open the lens for focusing (not needed for the second solution).
- P-TTL could also be enabled, as the metering flash can now occur at the desired aperture, without any influence from sticky blades (and no, P-TTL doesn't necessarily need the actual aperture to work).
- M mode would work just like now, so those not willing to use this new feature can just stick to it.

This would add tremendous value to the old M lenses, IMO, without changing anything to the current behavior of A and m42 lenses, and also adding P-TTL to m42s...

I'm very glad they didn't implement it like that!

The green button is fantastic, works really well for me.