Le 16 déc. 2016 à 16:51, Frank <wijsmuller@xxxxxxxxx> a écrit :
> Since the 35-80 is my favorite lens on the A7, I'd welcome some
> illustrations of your point. Is outperforming about more then better
> corners (I understand why smaller sensors have a benefit, not why they
> would 'outperform')? And at which F stops?
>
The smaller sensors may have a lower pixel count, and the pitch may also count.
Just saying as I'm no techie.
Also, aspherical lenses have made such progress since … the OM days :-)
Amities
Philippe
> I think most of the mentioned 'variables' correlate highly with the
> telecentric build of a lens. The modding of the A7x series to obtain a
> thinner stack was typically invented for the symmetric build rangefinder
> lenses, who are not very telecentric.
>
> And why would the zoom make a good example, since a zoom like that is even
> more telecentric then a prime lens in that range (if I understand the
> concept correct)? It is not F2 either.
>
>
>
> 2016-12-16 16:16 GMT+01:00 Ken Norton
>>
>>
>> The OMZ 35-80/2.8 is a good example. This lens is simply incredible on
>> film, on the E-1 and L1. But on the 6D, it doesn't grab you by the
>> throat and shake you around like you'd expect.
>>
>> The 50/1.4, 28/2 and 100/2 smoke it on film and the 4/3 bodies, but
>> are also-rans on the 6D. Unless stopped down, the 50/1.4 is almost
>> worthless on the 6D.
>>
>> The oddity of the bunch is the 35/2.8 (silvernose). This lens is
>> outstanding on film, even MORE outstanding on the 6D, but hohums me on
>> the 4/3 bodies. The 24/2.8 is OK on film, outstanding on the L1 and 6D
>> but not so hot on the E-1 and E-3.
>>
>> AG
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