Re: 5D - raises more questions

Alan Browne wrote:

> Stacey wrote:
>
>>On the tele end, it's not a problem.
>
> A very good point. I did neglect to think about WA on FF sensors.
>
> OTOH, the "limit" is not "tele" (above 50mm for FF), the limit is lower
> than 50. (where exactly it is ...)

It isn't just "over 50mm", it's probably more like the over 100mm ones that
aren't going to be any issue.

>
> > I know you too are wishing and hopeing that ALL of your old minolta
> > lenses will work excelent on a FF body, the WA ones probably won't.
>
> I agree it's the same problem. My Minolta lenses, BTW, are not "old".
>
> Let's see, I would bet my 20mm suffers (on a FF), and that my 28-70
> f/2.8 does not. Hmmm. Not so bad.


Why would you guess that?


>
>>>And you can be sure that, like the 20D, a lot of pros will adopt it
>>>quickly.
>>
>>
>> Because the 20D with it's WA EFs lens works better than the FF ones with
>> the old skool optics?
>
>
> This may be a shock to you, but a lot of people bottom out at about 28mm
> or so (FF), and wide angle beyond there is not of great interest to
> those shooters.

I'm not convinced the 28mm to 100mm lenses are going to fare much better.
The exit pupils are in ~the same place as the wider ones are. The 10-22 EFS
covers these angles and shouldn't suffer from these problems since it was
designed for this application.

>
> The WA EF-S lenses *do not* do better...

Sure they do, look at the results from them.

> they don't have to reach into
> the corners, they're not challenged to do better; they're limited to use
> with the cropped sensors.

The WA's that have the same FOV and are designed for APS sized sensors
aren't "cropped" as they are designed for the format. It's no different
than someone saying a full frame lens is "cropped" because it doesn't cover
medium format.


>
> The Zuiko 7-14mm tells the story in part: it is quite deep for it's FL
> range. Dimensions: 3.4" D x 4.7" L (86.5 mm x 119.5 mm). which is close
> to a FF 17mm-35mm in dimensions. All that to get more perpendicular ray
> arrival towards the edges/corners.
>
> Canon, who are not shy at all when it comes to new lens designs will
> likely offer the right product eventually.

And when they do, then they will have a "system" that performs well. Can you
imagine if olympus,nikon,minolta sold a camera that required you to buy
manual focus lenses from another manufacturer and use them on an adapter to
get decent performance and think that was an acceptable solution? Of course
when it's Canon, these guys accept this as normal and nothing to complain
about?

--

Stacey
.

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