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sample gallery Pentax DA 50mm f/1.8


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#1 Klaus

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Posted 08 November 2016 - 02:52 PM

https://photozone.sm...tax-DA-50mm-f18


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#2 joostdh

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Posted 08 November 2016 - 04:03 PM

 

 

Nothing wrong with those photos. Does this mean a test might be coming up? 



#3 dave's clichés

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Posted 08 November 2016 - 05:02 PM

Is this going to be a test on APSc or FF?



#4 Brightcolours

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Posted 08 November 2016 - 05:31 PM

Maybe I missed that Klaus got a K1? Otherwise, APS-C?



#5 dave's clichés

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Posted 08 November 2016 - 06:20 PM

I ask the question as I've seen the results on FF, it covers the sensor but is very soft at the edges!



#6 Klaus

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Posted 08 November 2016 - 10:09 PM

FF will not happen on Pentax for the time being.

I just can't see how the related expenses would pay off.


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#7 toni-a

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Posted 08 November 2016 - 10:13 PM

FF will not happen on Pentax for the time being.
I just can't see how the related expenses would pay off.

Maybe via an adapter to sony ?

#8 Brightcolours

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Posted 08 November 2016 - 11:28 PM

Maybe via an adapter to sony ?

The sensor glass thickness issue will invalidate such tests partially.



#9 toni-a

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Posted 09 November 2016 - 08:38 AM

The sensor glass thickness issue will invalidate such tests partially.

didn't understand, sony mirrorless mount is short, so an adapter won't have optical elements, autofocus tests is another story



#10 Brightcolours

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Posted 09 November 2016 - 09:20 AM

didn't understand, sony mirrorless mount is short, so an adapter won't have optical elements, autofocus tests is another story

I said sensor glass. The glass part of the sensor stack.



#11 toni-a

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Posted 09 November 2016 - 05:19 PM

Doesn't Pentax use Sony sensors ?

#12 Brightcolours

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Posted 09 November 2016 - 07:19 PM

Doesn't Pentax use Sony sensors ?

That has nothing to do with the matter. 



#13 toni-a

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Posted 09 November 2016 - 08:44 PM

Hi BC, I am not disagreeing with you I don't understand if tests are done via adapter without optical elements could be biased, can you elaborate please ??



#14 Kunzite

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Posted 09 November 2016 - 09:11 PM

I think it's about this:

https://www.lensrent...adapted-lenses/



#15 dave9t5

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Posted 09 November 2016 - 10:45 PM

Better explanation in this post:

https://www.lensrent...does-it-matter/



#16 Klaus

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Posted 09 November 2016 - 10:53 PM

Sony seems to have settled with a thickness of around 2mm.

 

However, when replacing the filter with something thinner, the results aren't getting any better with native Sony lenses.

https://www.lensrent...r-sensor-stack/

 

Mounting Pentax lenses on the A7R II should not have any impact in any case - we are talking about DSLR lenses which have a much bigger distance from the sensor plane than those rangefinder lenses or "booster" setups.

 

That being said - we still won't do it. Testing Pentax lenses on a Sony camera would alienate the majority of the already slim user base. Thus ... still no business case.


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#17 Rover

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Posted 10 November 2016 - 10:26 AM

That, and I think we already know how two of the recently released Pentax zooms should be performing... :P (although not on 36MP)



#18 joostdh

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Posted 11 November 2016 - 11:22 PM

FF will not happen on Pentax for the time being.

I just can't see how the related expenses would pay off.

Fair enough.

 

Though I would be interested how the new (FF) D FA 28-105mm tests. I have one and find it extremely competent. Oh well, it’s always good to have something to wish for.






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