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  Previous versions of keepcoding's message #15123020 « Sigma 45mm f/2.8 DG DN Contemporary Review »

  

keepcoding
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Re: FM Review: Sigma 45mm f/2.8 Contemporary


tuomkok wrote:
Sigma 45 seemed to be the ideal lens for street- and everyday photography, but the af-performance is really disappointing.

What do you think, is it fundamentally a hardware issue? Or something that can be (will be) corrected with firmware update?



It has been discussed several times in this thread. The AF-S performance is very good, AF-C also works well in bright daylight.
I personally have no complaints about the AF in general.

When contrast is not very good (dim light) and in close range, the focus struggles. This is most likely due to spherical aberration and cannot be fixed with a firmware update.
However, maybe they can still improve the performance slightly with future updates.
And maybe Sony could improve on this as well (but I doubt that they will do that).




Jan 26, 2020 at 06:42 AM
keepcoding
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Re: FM Review: Sigma 45mm f/2.8 Contemporary


tuomkok wrote:
Sigma 45 seemed to be the ideal lens for street- and everyday photography, but the af-performance is really disappointing.

What do you think, is it fundamentally a hardware issue? Or something that can be (will be) corrected with firmware update?



It has been discussed several times in this thread. The AF-S performance is very good, AF-C also works well in bright daylight.
I personally have no complaints about the AF in general.

When contrast is not very good (dim light) and in close range, the focus struggles. This is most likely due to spherical aberration and cannot be fixed with a firmware update.
However, maybe they can still improve the performance slightly with future updates.
And maybe Sony can improve on this as well.




Jan 26, 2020 at 06:41 AM
keepcoding
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Upload & Sell: Off
Re: FM Review: Sigma 45mm f/2.8 Contemporary


tuomkok wrote:
Sigma 45 seemed to be the ideal lens for street- and everyday photography, but the af-performance is really disappointing.

What do you think, is it fundamentally a hardware issue? Or something that can be (will be) corrected with firmware update?



It has been discussed several times in this thread. The AF-S performance is very good, AF-C also works well in bright daylight.
I personally have no complaints about the AF in general.

When contrast is not very good (dim light) and in close range, the focus struggles. This is due to spherical aberration and cannot be fixed with a firmware update. It is inherent to the lens design.
However, maybe they can still improve the performance slightly with future updates.



Jan 26, 2020 at 06:33 AM





  Previous versions of keepcoding's message #15123020 « Sigma 45mm f/2.8 DG DN Contemporary Review »