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Are Sony's sensors 'sensitive' to lens quality?

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For instance, will the a6300 + 16-70 f4 look less sharp than a 24-70 2.8 @ f4 in 4K24p mode? 

On both my Canon and GH bodies, at least in video mode, the lens choice did not seem to affect the video quality/aesthetics (other than the aperture rating). 

Suggestions please!

 

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definitely.  it's not just about resolution.  The entire image makes up perceived optical sharpness or more accurately 'detail'.  the 24-70/2.8 closed down to f4 will be miles better than the 16-70/4 wide open.  mainly due to the reduced unpleasant artefacts like CA, coma, reduced contrast, etc that lenses usually exhibit when used wide open.  The 24-70 will have the advantage of being 1 stop further away from it's maximum aperture.  it's likely the 24-70 may actually outperform the 16-70, even when set to f2.8.    

 

 

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16 minutes ago, richg101 said:

definitely.  it's not just about resolution.  The entire image makes up perceived optical sharpness or more accurately 'detail'.  the 24-70/2.8 closed down to f4 will be miles better than the 16-70/4 wide open.  mainly due to the reduced unpleasant artefacts like CA, coma, reduced contrast, etc that lenses usually exhibit when used wide open.  The 24-70 will have the advantage of being 1 stop further away from it's maximum aperture.  it's likely the 24-70 may actually outperform the 16-70, even when set to f2.8.    

 

 

but the 24-70 2.8 is designed for a much bigger sensor than the a6300 (full frame) so you wont be taking advantage of the enitre lens and get all the sharpness while the 16-70mm is made for apsc.

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Just now, BrorSvensson said:

but the 24-70 2.8 is designed for a much bigger sensor than the a6300 (full frame) so you wont be taking advantage of the enitre lens and get all the sharpness while the 16-70mm is made for apsc.

the 24-70/2.8 is designed with the a7rii in mind..  so even cropping into it, the lens will outdo most purpose built aps-c lenses.

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3 minutes ago, richg101 said:

the 24-70/2.8 is designed with the a7rii in mind..  so even cropping into it, the lens will outdo most purpose built aps-c lenses.

The 24-70 is tested to perform similary to the canon 24-70. Here is that lens on the 24mp canon vs the cheapest apsc on the same camera. I think you the a6000 with 16-70 and a6300 with 24-70 GM would give similar results.
56e301a929115_Skarmavbild2016-03-11kl.1856e301a467b66_Skarmavbild2016-03-11kl.18

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i'll wait for the dxo test of the G 24-70.  Sony won;t get away with selling a modern 24-70 that doesnt deliver on their flagship camera.  it'll have been optimised and since there is no mirror to hinder the design approach the sony g will certainly outdo the canon.  the above comparison shows that the aps-c lens has almost twice the chromatic aberration.  - double the CA equates to a lot more usable perceived resolution loss IMO

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19 minutes ago, richg101 said:

i'll wait for the dxo test of the G 24-70.  Sony won;t get away with selling a modern 24-70 that doesnt deliver on their flagship camera.  it'll have been optimised and since there is no mirror to hinder the design approach the sony g will certainly outdo the canon.  the above comparison shows that the aps-c lens has almost twice the chromatic aberration.  - double the CA equates to a lot more usable perceived resolution loss IMO

About the last line, keep in mind that the 18-55 is a 100 dollar kit lens. the 16-70mm f4 is 1000 dollar lens.

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23 hours ago, BrorSvensson said:

but the 24-70 2.8 is designed for a much bigger sensor than the a6300 (full frame) so you wont be taking advantage of the enitre lens and get all the sharpness while the 16-70mm is made for apsc.

On the contrary, the 24-70 mounted on an aps-c sensor will only "use" the center of the lens, which is always the sharpest and best performing area. You can even get away with using full frame lenses that have good center sharpness and contrast and poor corner sharpness/vignetting, etc. since all those defects visible in a full frame camera will not be seen mounted on an apsc-camera. Full frame lenses always look better on aps-c (comparatively). The downside is that it is a little "overkill", since you would be using a much larger/heavier lens than you need given the size of the sensor (and in some zooms that extra weight and size is considerable).

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Just now, pablogrollan said:

On the contrary, the 24-70 mounted on an aps-c sensor will only "use" the center of the lens, which is always the sharpest and best performing area. You can even get away with using full frame lenses that have good center sharpness and contrast and poor corner sharpness/vignetting, etc. since all those defects visible in a full frame camera will not be seen mounted on an apsc-camera. Full frame lenses always look better on aps-c (comparatively). The downside is that it is a little "overkill", since you would be using a much larger/heavier lens than you need given the size of the sensor (and in some zooms that extra weight and size is considerable).

Yes, but it's being viewed by a 24Mp sensor, as opposed to the 18Mp of the A7R II crop area, it has 33% more resolution and will show flaws that are missed by that same part of the full frame

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14 minutes ago, pablogrollan said:

On the contrary, the 24-70 mounted on an aps-c sensor will only "use" the center of the lens, which is always the sharpest and best performing area. You can even get away with using full frame lenses that have good center sharpness and contrast and poor corner sharpness/vignetting, etc. since all those defects visible in a full frame camera will not be seen mounted on an apsc-camera. Full frame lenses always look better on aps-c (comparatively). The downside is that it is a little "overkill", since you would be using a much larger/heavier lens than you need given the size of the sensor (and in some zooms that extra weight and size is considerable).

i used to think the same thing but then i watched this video and it changed my mind completely.

 

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4 minutes ago, DayRaven said:

Yes, but it's being viewed by a 24Mp sensor, as opposed to the 18Mp of the A7R II crop area, it has 33% more resolution and will show flaws that are missed by that same part of the full frame

True, to a certain extent. The problem might be that, if the smaller sensor (aps-c) has a much higher resolution than the cropped area of the ff sensor, you just might hit the limit of what the glass can actually resolve and it would not look considerably better or more detailed. Still, you compare the full image of a camera vs. the full image of the other, and in any case with the same full frame lens, the aps-c image would show a tighter framing (due to the x1.5 crop sensor) with better center to corner shaprness. 

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1 minute ago, pablogrollan said:

True, to a certain extent. The problem might be that, if the smaller sensor (aps-c) has a much higher resolution than the cropped area of the ff sensor, you just might hit the limit of what the glass can actually resolve and it would not look considerably better or more detailed. Still, you compare the full image of a camera vs. the full image of the other, and in any case with the same full frame lens, the aps-c image would show a tighter framing (due to the x1.5 crop sensor) with better center to corner shaprness. 

it would not have better center to corner sharpness, it will just be more consistent in the frame with sharpness.

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2 minutes ago, BrorSvensson said:

i used to think the same thing but then i watched this video and it changed my mind completely.

 

I wouldn't pay too much attention to Tony Northrup... I've heard him "state facts" that are somewhat questionable, and in that same video he starts saying there is no improvement in sharpness to later talk about the cases in which the same lens is actually shaper on a aps-c body... In general terms, aside from in camera software corrections and other factors that would make you have to judge lens by lens, a ff lens on an aps-c body would show better center to corner sharpness. That's one of the reasons why some of the better cinema lenses for s35 almost cover full frame: you avoid any possible vignetting and corner softness at the expense of a bulkier lens.

Northrup's pixel calculation does not apply to video with the relatively low resolutions of HD and 4K.

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17 minutes ago, pablogrollan said:

 

Northrup's pixel calculation does not apply to video with the relatively low resolutions of HD and 4K.

The starter of this thread is talking about the a6300 which has a 4k image scaled down from 6k which is very sharp, sure its not the same level as stills but you will notice a softer lens.

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