The DA 40mm seems to be exactly the same formula as the M 40 in a
mechanically different mount. At least Boz seems to think so, since he
uses the same optical diagram for both lenses. There should be no
surprise therefor that the DA 40mm will cover FF 35mm with some light
fall off in the corners...
Jim King wrote:
> William Robb wrote on Mon, 01 Jan 2007 10:12:42 -0800:
>
> (snip)
>
>
>> The only DA lens I have bought that I could have filled with an FA
>> lens is
>> the DA40. I could have bought the FA43 for a lot more money, but on
>> FF, I
>> never saw the use for that particular length, so the 40 is a good (and
>> relatively inexpensive) compromise for a long standard.
>>
>
> Bill, the DA40 seems to cover the FF format very nicely in my tests,
> so you haven't lost anything by getting it. It's really a nice
> little lens, although a stop slower than I would prefer.
>
> Regards, Jim
>
>
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