A6000 softer on right side?

osv · Sep 5, 2014

Digital Nigel said:
Digital Nigel said:

the object in this exercise is to find out if the soft side ever gets in clear focus, not to compare the sides.

if the soft side never gets in clear focus with any lens, it's definitely something weird.

Click to expand...

I find that the right hand side goes get in reasonable focus with stopped down images.

correct, and it's screwing up the test results.

it needs to shot wide open.

Digital Nigel said:
The softness is really only evident with the first image

because the second image is stopped down more.

stopping down increases the dof.

to recap, you shot the same 50mm on two different cameras, and both pics were weaker on the right-hand edge, which indicates a lens problem.

the zoom shot was oof across the entire frame, it can't be used.

Timbukto · Sep 5, 2014

You mislabed some of the photo captions if the EXIF's are true, however yes the NEX-7 + 50mm 1.8 looks far far better than A6000 with same lens. Talk about the amount of crap you need to worry about...can we get some better QC.

Timbukto · Sep 5, 2014

osv said:
Digital Nigel said:

osv said:

the object in this exercise is to find out if the soft side ever gets in clear focus, not to compare the sides.

if the soft side never gets in clear focus with any lens, it's definitely something weird.

Click to expand...

I find that the right hand side goes get in reasonable focus with stopped down images.

Click to expand...

correct, and it's screwing up the test results.

it needs to shot wide open.

osv said:

The softness is really only evident with the first image

Click to expand...

because the second image is stopped down more.

stopping down increases the dof.

to recap, you shot the same 50mm on two different cameras, and both pics were weaker on the right-hand edge, which indicates a lens problem.

the zoom shot was oof across the entire frame, it can't be used.

osv · Sep 5, 2014

definitely bad q.c. somewhere! i'm thinking lens, at the minimum, but i see how there could be an issue with the camera body as well.

Digital Nigel · Sep 5, 2014

osv said:
definitely bad q.c. somewhere! i'm thinking lens, at the minimum, but i see how there could be an issue with the camera body as well.

My initial assumption was that it was a lens problem, but I'm now reasonably certain it's (mainly) a camera problem. The lenses may not be perfect, but the NEX-7 images all seem pretty good, so it's the a6000 that's the main culprit.

Digital Nigel · Sep 5, 2014

Timbukto said:
You mislabed some of the photo captions if the EXIF's are true, however yes the NEX-7 + 50mm 1.8 looks far far better than A6000 with same lens. Talk about the amount of crap you need to worry about...can we get some better QC.

The images are all OOC JPEGs, so the Exifs are all authentic. I can't spot any incorrect captions, but it's certainly possible that I mix edited them.

Yes, it's a pain to have to test both lenses and cameras now. I've never previously had a camera that was bad enough for me to spot faults (apart from the badly stuck-on rubber grips on my NEX-7, but at least that didn't affect functionality or IQ). At least I was careful to buy from Amazon, not a Hong Kong discounter.

Digital Nigel · Sep 5, 2014

osv said:
definitely bad q.c. somewhere! i'm thinking lens, at the minimum, but i see how there could be an issue with the camera body as well.

No, it's definitely the camera: the same lenses produce sharper images on the NEX-7. Perhaps they're not perfect, either, but the faults are not nearly so visible in NEX-7 images. Of course, at f/8 both cameras produce very similar results, but as the DoF gets shallower, the apparent sensor misalignment in the a6000 becomes more apparent.

dave46978 · Sep 5, 2014

This isn't happening on the right side. It is happening at the bottom of the frame. This measn that it could be a result of vertical shutter performance. The only other idea that I have is a misaligned lens mount or sensor.

andrewD2 · Sep 5, 2014

osv said:
andrewD2 said:

osv said:

have you tried using magnify to manually focus in just the soft area?

Click to expand...

Click to expand...

Ross Warner · Sep 5, 2014

Just for fun, take one shot normally, then take the second shot with the camera inverted. Do the problem areas move from the right side to the left side?

-Ross

Digital Nigel · Sep 5, 2014

dave said:
This isn't happening on the right side. It is happening at the bottom of the frame. This measn that it could be a result of vertical shutter performance. The only other idea that I have is a misaligned lens mount or sensor.

Yes, I think it's probably a misaligned sensor. I'm wondering if the sensor isn't seated properly in its mount? If it was a misaligned lens mount, wouldn't there be other signs?

andrewD2 · Sep 5, 2014

Ross Warner said:
Just for fun, take one shot normally, then take the second shot with the camera inverted. Do the problem areas move from the right side to the left side?

-Ross

How could it not, you've rotated the camera AND lens. Might as well stand on your head!

Andrew

osv · Sep 5, 2014

andrewD2 said:
Ross Warner said:

Just for fun, take one shot normally, then take the second shot with the camera inverted. Do the problem areas move from the right side to the left side?

-Ross

Click to expand...

How could it not, you've rotated the camera AND lens. Might as well stand on your head!

turning the camera horizontally on its axis alters the plane of focus, relative to the subject matter... the front glass of the lens(and sensor) is facing a different direction... it introduces another variable.

inverting the camera 180 degrees does not change the plane of focus, relative to the objects being shot.

anyway, please keep us posted on what sony does.

Ross Warner · Sep 5, 2014

osv said:
andrewD2 said:

Ross Warner said:

Just for fun, take one shot normally, then take the second shot with the camera inverted. Do the problem areas move from the right side to the left side?

-Ross

Click to expand...

How could it not, you've rotated the camera AND lens. Might as well stand on your head!

Click to expand...

turning the camera horizontally on its axis alters the plane of focus, relative to the subject matter... the front glass of the lens(and sensor) is facing a different direction... it introduces another variable.

inverting the camera 180 degrees does not change the plane of focus, relative to the objects being shot.

anyway, please keep us posted on what sony does.

andrewD2 · Sep 5, 2014

Like I've said. On my first test the WHOLE scene is softer on the right. 10m away, 30m away and in the far distance. Have a look at the first image in the link I posted and you'll get an idea (although it was overcast, no double rainbow).

The depth of field completely covers the scene.

Inverting the camera would only help if it was raining or foggy on one side of a building and not the other. And then stopped when I used the 5R. Then started again when I used the A6000. And then started again when I used the 5R again.

The softness is slight, its perfect vs ok. If the 5R and the left side wasn't so damn good you'd be pretty impressed with the right side.

Camera went back, I'd be suprised if its next owner could tell. Certainly a 16-50 wouldn't pick it up.

Andrew

andrewD2 · Sep 5, 2014

One of your test shots with the 55-210 looks out of focus. At the long end I didn't find the 55-210 capable of outresolving the A6000 at f8 and definitely not "wide open".

Your Nex7 is showing corner smearing too.

Andrew

Digital Nigel · Sep 5, 2014

andrewD2 said:
One of your test shots with the 55-210 looks out of focus.

Yes, I do seem to get more out-of-focus shots with this camera than with my other cameras.

andrewD2 said:
At the long end I didn't find the 55-210 capable of outresolving the A6000 at f8 and definitely not "wide open".

I must do more tests, but the 55-210 has actually performed better than I expected in these tests. It's a cheap, slim, light lens, and I wasn't expecting much, but so far I'm agreeably surprised.

andrewD2 said:
Your Nex7 is showing corner smearing too.

In which shot? I don't think the NEX-7 is perfect, but it's a lot better than the a6000 in these tests. And I hate the lack of a level gauge in the a6000, so if only taking one camera, I definitely prefer the older model.

andrewD2 · Sep 5, 2014

The level shouldn't have been left out. A fisheye can be quite hard to level depending on scene.

I think the Nex7 shot with the 50/1.8 doesn't look great bottom right but it might an expected amount of corner softness.

Don't forget the PDAF has a micro adjustment, it can be off. I found the autofocus could need a tweek. Very biased to vertical lines too.

Andrew

Digital Nigel · Sep 6, 2014

andrewD2 said:
The level shouldn't have been left out. A fisheye can be quite hard to level depending on scene.

I think the Nex7 shot with the 50/1.8 doesn't look great bottom right but it might an expected amount of corner softness.

Don't forget the PDAF has a micro adjustment, it can be off. I found the autofocus could need a tweek. Very biased to vertical lines too.

PDAF wasn't used in these shots, but where is the micro adjustment? I wasn't aware of it. I've now done some more tests, with wide open primes:

More a6000 soft edge tests

After recent threads that discussed soft (ie, out of focus) edges with the a6000 (http://www.dpreview.com/forums/thread/3721300 and http://www.dpreview.com/forums/thread/3721792), I've done some more tests to follow up the theories. I used my new a6000 and my old NEX-7, with two respected prime...

www.dpreview.com

Ross Warner · Sep 6, 2014

Digital Nigel said:
andrewD2 said:

The level shouldn't have been left out. A fisheye can be quite hard to level depending on scene.

I think the Nex7 shot with the 50/1.8 doesn't look great bottom right but it might an expected amount of corner softness.

Don't forget the PDAF has a micro adjustment, it can be off. I found the autofocus could need a tweek. Very biased to vertical lines too.

Click to expand...

PDAF wasn't used in these shots, but where is the micro adjustment? I wasn't aware of it. I've now done some more tests, with wide open primes:
http://www.dpreview.com/forums/thread/3722455

Micro-adjustment is for Alpha lenses only, with an adapter. Custom menu 5.

-Ross

A6000 softer on right side?

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