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Sony pancake 16-50mm vignettes at 16mm.

Started Dec 17, 2012 | Discussions
petergerritsen
petergerritsen Regular Member • Posts: 383
Sony pancake 16-50mm vignettes at 16mm.

All pictures at 16mm suffer from vignetting with or without filter. At all diaphragms

See examples . Raw and LR4.

How are your experiences?

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Peter Gerritsen

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Cheng Bao Senior Member • Posts: 1,158
Re: Sony pancake 16-50mm vignettes at 16mm.

Enable lens correction in your LR, it will be gone.

flangad Forum Member • Posts: 63
Re: Sony pancake 16-50mm vignettes at 16mm.

petergerritsen wrote:

All pictures at 16mm suffer from vignetting with or without filter. At all diaphragms

See examples . Raw and LR4.

How are your experiences?

did you check if this is real 16mm, and not 14mm (16mm after corrected)?

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petergerritsen
OP petergerritsen Regular Member • Posts: 383
Re: Sony pancake 16-50mm vignettes at 16mm.

That's sounds good. But where do I find this setting?

thanks

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Peter Gerritsen

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ChristopherKnapp Regular Member • Posts: 100
Re: Sony pancake 16-50mm vignettes at 16mm.

Yes, it does.

petergerritsen
OP petergerritsen Regular Member • Posts: 383
Re: Sony pancake 16-50mm vignettes at 16mm.

I checked and correction is off.

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Peter Gerritsen

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viking79
viking79 Forum Pro • Posts: 14,157
Re: Sony pancake 16-50mm vignettes at 16mm.

petergerritsen wrote:

All pictures at 16mm suffer from vignetting with or without filter. At all diaphragms

See examples . Raw and LR4.

How are your experiences?

The lens isn't designed for an APS-C sensor, at least from 16-18mm or so.  They rely on software corrections to make the image fit the frame after removing barrel distortion and cropping.

In lightroom 4.3 you can enable lens corrections in the develop module, down towards the bottom of the list.  You click the check mark for enable lens corrections under the automatic tab and select "sony" from the list of brands, and it should auto-fill the 16-50mm correction info.

This should totally eliminate the dark corners, but at the same time your corners will generally be soft since they are in the edge of the image circle.

I don't understand why people defend Sony with this lens.  Every other software corrected lens I use still has an image circle large enough to cover the sensor.  They might have equal levels of distortion, but at least they are sharp out to the corners, giving the option to shoot uncorrected or not.

Eric

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petergerritsen
OP petergerritsen Regular Member • Posts: 383
Re: Sony pancake 16-50mm vignettes at 16mm.

It is enabled. There is no setting for this lens.

If I set it on for the 18-55mm kit lens than it is gone but get a strange effect. So I always have it enabled.

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Peter Gerritsen

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viking79
viking79 Forum Pro • Posts: 14,157
Re: Sony pancake 16-50mm vignettes at 16mm.

petergerritsen wrote:

It is enabled. There is no setting for this lens.

If I set it on for the 18-55mm kit lens than it is gone but get a strange effect. So I always have it enabled.

You must have Lightroom 4.3 (or ACR7.3) as that is the version they added the profile for the 16-50mm.  Lightroom 4.3 released only a few days ago.

Eric

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RobertSigmund
RobertSigmund Forum Pro • Posts: 10,750
Re: Sony pancake 16-50mm vignettes at 16mm.

petergerritsen wrote:

It is enabled. There is no setting for this lens.

If I set it on for the 18-55mm kit lens than it is gone but get a strange effect. So I always have it enabled.

Well, it the setting while come soon I guess. We pioneers always pay a price.

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petergerritsen
OP petergerritsen Regular Member • Posts: 383
Re: Sony pancake 16-50mm vignettes at 16mm.

Thank you so much for your information. So in fact it is a no good lens. I have lens corrections enabled and get a lousy result. Thank you Sony.

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Peter Gerritsen

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viking79
viking79 Forum Pro • Posts: 14,157
Re: Sony pancake 16-50mm vignettes at 16mm.

petergerritsen wrote:

Thank you so much for your information. So in fact it is a no good lens. I have lens corrections enabled and get a lousy result. Thank you Sony.

No good is a relative term.  I think their size reduction efforts negatively impacted the performance of the lens, is it a trade off you are willing to make?

Make sure to try LR 4.3 if you have version 4 at least, and it has a profile built in that is decent.  You will still get softer corners though.

Eric

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I never saw an ugly thing in my life: for let the form of an object
be what it may - light, shade, and perspective will always make it
beautiful. - John Constable (quote)
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Flickr Photostream: http://www.flickr.com/photos/28177041@N03/ (updated daily)

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santiclaws Senior Member • Posts: 1,250
Re: Sony pancake 16-50mm vignettes at 16mm.

viking79 wrote:

I don't understand why people defend Sony with this lens. Every other software corrected lens I use still has an image circle large enough to cover the sensor. They might have equal levels of distortion, but at least they are sharp out to the corners, giving the option to shoot uncorrected or not.

Eric

Because Sony made a design choice. It is not a better or worse choice, it is just a choice - namely, the uncorrected image is not 16mm wide but more like 14- 14.5mm. Presumably this was done in order to attempt to make the corners sharper. There is nothing inherently worse about doing it Sony's way than in any other way with any lens requiring software correction.

petergerritsen
OP petergerritsen Regular Member • Posts: 383
Re: Sony pancake 16-50mm vignettes at 16mm.

I have LR 4.3 but there is no setting for this lens only for the 18-50mm as far I can see.

Thanks for your help!!

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Peter Gerritsen

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nosnoop Senior Member • Posts: 1,694
Re: Sony pancake 16-50mm vignettes at 16mm.

petergerritsen wrote:

Thank you so much for your information. So in fact it is a no good lens. I have lens corrections enabled and get a lousy result. Thank you Sony.

No, you get lousy result because Adobe hasn't gotten around to support his lens.

Use JPEG in your camera for your image capture, and you'd see how correction is supposed to look like.

Once Lightroom has support for this lens, you would get results as good as (if not better than) your camera's JPEG capture.

petergerritsen
OP petergerritsen Regular Member • Posts: 383
At 50mm it is pretty good
2

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viking79
viking79 Forum Pro • Posts: 14,157
Re: Sony pancake 16-50mm vignettes at 16mm.

santiclaws wrote:

viking79 wrote:


I don't understand why people defend Sony with this lens. Every other software corrected lens I use still has an image circle large enough to cover the sensor. They might have equal levels of distortion, but at least they are sharp out to the corners, giving the option to shoot uncorrected or not.

Eric

Because Sony made a design choice. It is not a better or worse choice, it is just a choice - namely, the uncorrected image is not 16mm wide but more like 14- 14.5mm. Presumably this was done in order to attempt to make the corners sharper. There is nothing inherently worse about doing it Sony's way than in any other way with any lens requiring software correction.

You could probably put a m4/3 lens on the Sony and correct away the distortion and get similar results.

I haven't checked all my posts where I posted this, but I would still like to see where someone measures the Sony's focal length. Has anyone actually done this yet? By that I mean photograph something of known size, measure the magnification, and calculate the focal length?

Running the corrections on my samples I took a while back, and it does remove vignetting and CA, but the edges are still pretty soft. Bottom line is marketing one out on that lens, I am sure engineering wouldn't want to put 16-50mm on that lens, probably more like 18-50 or 20-50mm, but that isn't as exciting.

Edit: Focal length is a physical property of the lens, so technically speaking it will always be a 16-50mm lens, but what I am saying is at 16mm it is most certainly not an APS-C image circle lens.  It is more like 1.7 or 1.8x crop and probably should have had the range relaxed to support a larger image circle, like made 20-50mm instead if it would have meant better image quality.

Eric

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viking79
viking79 Forum Pro • Posts: 14,157
Re: Sony pancake 16-50mm vignettes at 16mm.

petergerritsen wrote:

I have LR 4.3 but there is no setting for this lens only for the 18-50mm as far I can see.

Thanks for your help!!

Really?  I thought I just ran this last night, as soon as I check the box and select Sony, it auto-corrects it and removes the dark corners.  I will have to check again what it is picking.

Eric

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be what it may - light, shade, and perspective will always make it
beautiful. - John Constable (quote)
See my Blog at: http://www.erphotoreview.com/ (bi-weekly)
Flickr Photostream: http://www.flickr.com/photos/28177041@N03/ (updated daily)

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nosnoop Senior Member • Posts: 1,694
Re: Sony pancake 16-50mm vignettes at 16mm.

viking79 wrote:

You could probably put a m4/3 lens on the Sony and correct away the distortion and get similar results.

No, you won't.

I haven't checked all my posts where I posted this, but I would still like to see where someone measures the Sony's focal length. Has anyone actually done this yet? By that I mean photograph something of known size, measure the magnification, and calculate the focal length?

There was an earlier posting saying that it was closer to 14mm uncorrected.   But I cannot find that post.

Running the corrections on my samples I took a while back, and it does remove vignetting and CA, but the edges are still pretty soft. Bottom line is marketing one out on that lens, I am sure engineering wouldn't want to put 16-50mm on that lens, probably more like 18-50 or 20-50mm, but that isn't as exciting.

I have no problem with its 16mm label.

viking79
viking79 Forum Pro • Posts: 14,157
Re: Sony pancake 16-50mm vignettes at 16mm.

nosnoop wrote:

viking79 wrote:

You could probably put a m4/3 lens on the Sony and correct away the distortion and get similar results.

No, you won't.

Have you tried?  Someone who has say a 17mm f/2.8 from m4/3 should see what kind of image circle they get with that lens.  Some of the Pentax 110 (same size as 4/3) image circles actually cover the NEX sensor, just not very well (like the 16-50mm at 16mm).

I haven't checked all my posts where I posted this, but I would still like to see where someone measures the Sony's focal length. Has anyone actually done this yet? By that I mean photograph something of known size, measure the magnification, and calculate the focal length?

There was an earlier posting saying that it was closer to 14mm uncorrected. But I cannot find that post.

But I think they are basing that on the fact that they advertise it as a 16mm (i.e. the RAW image is wider than the corrected image so they are guessing it is 14mm?  It could just as easily be 18mm and 16mm etc).

Eric

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I never saw an ugly thing in my life: for let the form of an object
be what it may - light, shade, and perspective will always make it
beautiful. - John Constable (quote)
See my Blog at: http://www.erphotoreview.com/ (bi-weekly)
Flickr Photostream: http://www.flickr.com/photos/28177041@N03/ (updated daily)

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