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The Sony A7 thread [Merged]

dmclalla

By dmclalla
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viramati

viramati

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Hi,

Am wondering how the app will know which aperture has been used and presumably if you wanted, you could set up multiple corrections ie one for each f stop?... am thinking of the varying vignetting when using an M 50lux

 

Ok have bought and installed the app (only cost £7.99) but for me it is fairly useless.

1. it doesn't show EXIF info that you have set when imported into Lr

2. Very hard to really judge what is going on on the peripheral edges to adjust for colour etc

3. You have to go into especial menu in the camera and it seems to disable various other camera functions.

What would be really great if Sony were to develop an adaptor like fuji M adaptor where you can set it for various corrections and you just press the button on the side of the adaptor to set it for each different lens

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Jaybob

Jaybob

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It doesn't work in RAW or save any information of your lens/aperture combo. It's just short of impossible to actually manually adjust it to garner the results that would make it worth using. I commented on this like 10 or 20 pages ago.

 

A simple search of this massively bloated thread using the term "Lens Compensation" would have saved you 10 dollars.

 

It's what we call in the business a "piece of crap".

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naturephoto1

naturephoto1

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Finally my number came up for a Phigment Technologies adapter, but when I went to place the order, I was told shipping to the US & Canada only! Grrrr. Anyone else had this?

 

 

Sent from my iPad using Tapatalk HD

 

John,

 

That is because the adapters are not CE certified. So, Paul does not want to sell/ship them outside of the US and Canada.

 

But, I am sure that if you like, one of us in Canada or the US could ship it to you. But, it will be more expensive due to shipping twice.

 

The other thing to be aware as we have now found is that due to the design with the circuit board there is some vignetting with M lenses longer 75mm?? and longer.

 

Mine is on its way back to me from Paul after he has performed and upgrade on the adapter. I may have it back as early as tomorrow, but due to the Holiday mail, it could be a little longer.

 

Rich

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thompsonkirk

thompsonkirk

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My main concern about the Sony bodies has been how well they'll work with 35mm M lenses. I'd ordered an A7r, but following advice here on LUF about corner smearing and vignetting, I returned it unopened and got an A7.

 

Today I tried the Summilux Asph FLE, two Mandler designs – 35 pre-aspherical Summilux and 35 Summicron v4 – and a 40mm Summicron. I tried them at widest aperture to f4, thinking that the A7, with better high ISO performance, would be my body of choice for low-light-level shooting. (When I can use lower ISO's, I'll stick with M9.) I used a Voigtlander adapter, which is quite solid. I photographed a blank garage door to look for color vignetting, and a fence with both vertical lines and mesh to check for corner smearing.

 

I tried the Lux FLE first with the high hopes, but it exhibited some color vignetting at all apertures and quite a bit of corner smearing: lots of it at f1.4, moderate at f2.8, and perhaps just tolerable at f4. I won't be using this lens on A7.

 

The 35 Cron v 4 performed better than the FLE, but still none too well. At f2 I saw moderate color shift and vignetting in the corners. At f4 it was still vignetting, but the color shift seemed less. At f2 it smeared less in the corners than the FLE – smearing was confined nearer to the corners of the frame. At f4 it might be tolerable, but it's so much better on M9.

 

The 35 pre-aspherical Summilux and the 40 Summicron were both better, but for different reasons.

 

The PA Lux at f1.4 showed quite a bit of luminance/BW vignetting but much less color shift in the corners. This is probably be reparable in LR/PS withe the regular vignetting correction tool (no need, I'm guessing, for the new and complicated flat field plug-in.) It showed only a little bit of corner smearing at f1.4 and f2, and none at f4. IMO this is a usable 35mm lens for A7 when one needs wider apertures.

 

The 40 Cron Was best-of-all for avoiding smeared corners – visible onlyin the extreme corners at f2 and f2.8; none at f4. When looking at the 100% crops of the corners I could tell I was looking at symmetrical bokeh, not elongated smear. The downside, however, was that this lens vignetted quite a bit – luminance vignetting (without any serious color shift – even at f4. Perhaps it wasn't comfortable in the Voigtlander adapter, and I wonder if Novoflex would be just be the same. (It oesn't do this on M9, because it's coded to use the 35 Cron lens profile.)

 

My own conclusion is that I won't be using the 35 Cron v4 or the Lux Asph FLE on the A7 body, and will probably make the 40 Cron my regular moderate wide angle. Subjectively I like the PA Lux best of all, but am always afraid of its characteristic moon-shaped flare when there's a light source just outside the frame.

 

These are tentative first-days-with-the-camera pixel-peeping checks to see what lenses to go ahead and use. I might change my mind later.

 

I'm also going to check some 50s this weekend. A first look suggested the pre-aspherical Lux performs noticeably better in the corners than 1.5 Sonnar-C. My Lux is a minty black paint one, worth quit a bit more than either an A7 or A7r body; so I wish it had turned out the other way!

 

Kirk

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k-hawinkler

k-hawinkler

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John,

 

That is because the adapters are not CE certified. So, Paul does not want to sell/ship them outside of the US and Canada.

 

But, I am sure that if you like, one of us in Canada or the US could ship it to you. But, it will be more expensive due to shipping twice.

 

The other thing to be aware as we have now found is that due to the design with the circuit board there is some vignetting with M lenses longer 75mm?? and longer.

 

Mine is on its way back to me from Paul after he has performed and upgrade on the adapter. I may have it back as early as tomorrow, but due to the Holiday mail, it could be a little longer.

 

Rich

 

 

Thanks Rich. Here are posts that pointed this out:

http://www.l-camera-forum.com/leica-forum/2580284-post3679.html

http://www.l-camera-forum.com/leica-forum/2580316-post3680.html

 

Phigment LM-NEX: Electronic Leica -> NEX Adapter - FM Forums

 

The GetDPI Photography Forums - View Single Post - A7r - and why I'm keeping it ...

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k-hawinkler

k-hawinkler

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My main concern about the Sony bodies has been how well they'll work with 35mm M lenses. I'd ordered an A7r, but following advice here on LUF about corner smearing and vignetting, I returned it unopened and got an A7.

 

Today I tried the Summilux Asph FLE, two Mandler designs – 35 pre-aspherical Summilux and 35 Summicron v4 – and a 40mm Summicron. I tried them at widest aperture to f4, thinking that the A7, with better high ISO performance, would be my body of choice for low-light-level shooting. (When I can use lower ISO's, I'll stick with M9.) I used a Voigtlander adapter, which is quite solid. I photographed a blank garage door to look for color vignetting, and a fence with both vertical lines and mesh to check for corner smearing.

 

I tried the Lux FLE first with the high hopes, but it exhibited some color vignetting at all apertures and quite a bit of corner smearing: lots of it at f1.4, moderate at f2.8, and perhaps just tolerable at f4. I won't be using this lens on A7.

 

The 35 Cron v 4 performed better than the FLE, but still none too well. At f2 I saw moderate color shift and vignetting in the corners. At f4 it was still vignetting, but the color shift seemed less. At f2 it smeared less in the corners than the FLE – smearing was confined nearer to the corners of the frame. At f4 it might be tolerable, but it's so much better on M9.

 

The 35 pre-aspherical Summilux and the 40 Summicron were both better, but for different reasons.

 

The PA Lux at f1.4 showed quite a bit of luminance/BW vignetting but much less color shift in the corners. This is probably be reparable in LR/PS withe the regular vignetting correction tool (no need, I'm guessing, for the new and complicated flat field plug-in.) It showed only a little bit of corner smearing at f1.4 and f2, and none at f4. IMO this is a usable 35mm lens for A7 when one needs wider apertures.

 

The 40 Cron Was best-of-all for avoiding smeared corners – visible onlyin the extreme corners at f2 and f2.8; none at f4. When looking at the 100% crops of the corners I could tell I was looking at symmetrical bokeh, not elongated smear. The downside, however, was that this lens vignetted quite a bit – luminance vignetting (without any serious color shift – even at f4. Perhaps it wasn't comfortable in the Voigtlander adapter, and I wonder if Novoflex would be just be the same. (It oesn't do this on M9, because it's coded to use the 35 Cron lens profile.)

My own conclusion is that I won't be using the 35 Cron v4 or the Lux Asph FLE on the A7 body, and will probably make the 40 Cron my regular moderate wide angle. Subjectively I like the PA Lux best of all, but am always afraid of its characteristic moon-shaped flare when there's a light source just outside the frame.

 

These are tentative first-days-with-the-camera pixel-peeping checks to see what lenses to go ahead and use. I might change my mind later.

 

I'm also going to check some 50s this weekend. A first look suggested the pre-aspherical Lux performs noticeably better in the corners than 1.5 Sonnar-C. My Lux is a minty black paint one, worth quit a bit more than either an A7 or A7r body; so I wish it had turned out the other way!

 

Kirk

 

 

Many thanks Kirk. Your findings seem spot on.

Vivek over at getdpi has also found the 40 Summicron to be performing quite well on his A7R.

 

With regards to the Voigtländer adapter could you please check its inside diameter?

If it has an insert, it may be too narrow. Please, see a photo here. http://www.l-camera-forum.com/leica-forum/2580450-post3682.html

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naturephoto1

naturephoto1

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Many thanks Kirk. Your findings seem spot on.

Vivek over at getdpi has also found the 40 Summicron to be performing quite well on his A7R.

 

With regards to the Voigtländer adapter could you please check its inside diameter?

If it has an insert, it may be too narrow. Please, see a photo here. http://www.l-camera-forum.com/leica-forum/2580450-post3682.html

 

We also have confirmation from a number of sources over at FM for both the Leica C 40mm Summicron and the 40mm M-Rokkor lenses to perform quite well on the A7r camera. I think that most have indicated that the loss in the corners (extreme) may be to field curvature and the results are similar to on film performance. I have been quite pleased with the performance of my Minolta CLE MC 40mm f2 M-Rokkor on my A7r. I anticipate getting my Phigment Leica M to NEX adapter back tomorrow or early next week. I also really want my RRS A7r L bracket to arrive but it is still on Pre-order. I will be able to do more testing with the Bracket for tripod mounting the camera alone.

 

Rich

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viramati

viramati

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It doesn't work in RAW or save any information of your lens/aperture combo. It's just short of impossible to actually manually adjust it to garner the results that would make it worth using. I commented on this like 10 or 20 pages ago.

 

A simple search of this massively bloated thread using the term "Lens Compensation" would have saved you 10 dollars.

 

It's what we call in the business a "piece of crap".

 

Well in the specs it says it supports RAW and it does seem to but I really haven't tested it enough to see the effect

Welcome, dear visitor! As registered member you'd see an image here…

Simply register for free here – We are always happy to welcome new members!

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3D-Kraft.com

3D-Kraft.com

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It doesn't work in RAW or save any information of your lens/aperture combo. It's just short of impossible to actually manually adjust it to garner the results that would make it worth using. I commented on this like 10 or 20 pages ago.

 

A simple search of this massively bloated thread using the term "Lens Compensation" would have saved you 10 dollars.

 

10 or 20 pages ago...

...are you sure, you are talking about the new release that was launched on the 19th of December?

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thompsonkirk

thompsonkirk

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Hi K-H (&/or others):

 

"Vivek over at getdpi has also found the 40 Summicron to be performing quite well on his A7R.

 

"With regards to the Voigtländer adapter could you please check its inside diameter?

If it has an insert, it may be too narrow. Please, see a photo here. http://www.l-camera-forum.com/leica-...-post3682.html"

 

I don't have calipers, but a regular ruler gives me approximately the same measurements that trylab posted in the link: about 36mm diameter inside the black ring and 41 for the metal part of the mount. The black ring is held in my a number of very small screws.

 

Can you tell me more about what this means? Does it mean that one of the other adapters without a black ring, or with an inner diameter >40, (e.g. a hard-to-get Novoflex) would vignette less in the corners?

 

Or are people simply unscrewing the tiny screws that hold in the black ring? I'm a renowned mechanical klutz who dare not use precision tools, so I'd have to have a jeweler remove it if necessary.

 

Thx for any advice! I like the feel of the body and certainly want it to work well with 35mm M lenses.

 

Kirk

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Rick

Rick

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"Vivek over at getdpi has also found the 40 Summicron to be performing quite well on his A7R.

 

With regards to the Voigtländer adapter could you please check its inside diameter?

If it has an insert, it may be too narrow. Please, see a photo here. http://www.l-camera-forum.com/leica-...-post3682.html"

 

I don't have calipers, but a regular ruler gives me – less accurately – the same measurements that trylab posted in the link. It has a little black ring inside the mount, held in my a number of very small screws.

 

Can you tell me more about what this means? Does it mean that one of the other adapters without a black ring, or with an inner diameter >40, (e.g. a hard-to-get Novoflex) would vignette less in the corners?

 

Thx for any advice! I like the feel of the body and weally hope it will work well with 35mm M lenses.

 

Kirk

 

The smaller the throat diameter the more the lens will have problems in the corners... especially for lenses that are near telecentric. Lenses that are less-telecentric will not be affected as much by the narrow inner throat. But, there is a trade off here. The more the lens is less-telecentric the more the incident angle will increase which will cause other corner problems. The short answer is that it would be nice if the adapters did not decrease the throat diameter.

 

The A7R sensor has tried to solve some of the less-telecentric(retrofocus:eek:) problems with off-set microlenses like the M9 employed. But, this doesn't completely solve the problem of smearing or cross talk or the refraction issues with the thicker cover glass. These issues are addressed with further advances in sensor technology that have been employed in the M240.

 

I've posted photos of the 280/4 APO on the M and the A7R that showed the incredible detail in the corners of the M240, but it got lost in the race to look at the center resolution of the muscle-car horse power of the A7R's 36MP sensor. The M240 is clearly ahead of the technology employed in the A7R in the corners. In other words, get the adaptor with the largest throat diameter, but it still won't be the limiting difference when it comes to all the factors that make for good corner performance.

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Rick

Rick

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...for the lenses of YOUR personal regard.

 

For all lenses. Yours too. Remember, the Leica 50mm APO Summicron had significantly better corner resolution on the M (24MP) than it did on the A7R (36MP)... and the 50 APO is near-telecentric. This example is more sensor-centric than it has to do with the lens. I'm sure that the WATE would show the same relative result.

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k-hawinkler

k-hawinkler

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Hi Kirk,

 

I think Rick gave you excellent advice.

There are a number of adapters with about the same fairly large diameters that are very different in price.

Some folks prefer the inexpensive ones and seem happy with them.

I prefer the Novoflex adapter and the fitting tripod collar.

As Rick pointed out factors other than adapter inner diameter play an important role as well.

For the focal lengths of your interest I will be using primarily non Leica M lenses.

They seem to avoid the issues you have described but are somewhat bigger.

But that's not a problem for me.

 

I also do not mind using Lens Cast Corrections.

What I won't use are lenses that smear appreciably the corners with the A7R.

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viramati

viramati

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It does say it works with RAW files, but it fact it does not. Inside the application, you can only select JPG files. Try it, you own it. It's borderline useless.

 

I am afraid that you a WRONG it does work in RAW. here it is with the summicron 28 asph. All I have adjusted is vignetting at f2

 

I would add that this is a lens that I wouldn't use on the A7 anyway I just wanted to demonstrate that the app does work in RAW and we all know that the summicron vignettes quite a bit wide open. I just love this lens on the M

 

Lastly an apology for your 'borderline' rudeness would be within the festive spirit!!

 

with app

Welcome, dear visitor! As registered member you'd see an image here…

Simply register for free here – We are always happy to welcome new members!

 

without app

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Ozkar

Ozkar

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It does say it works with RAW files, but it fact it does not. Inside the application, you can only select JPG files. Try it, you own it. It's borderline useless.

 

I installed the Lens Correction app on my A7R and it definitely supports raw files. I've been testing it with my Voigtlander 21/1.8 and it is quite effective.

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k-hawinkler

k-hawinkler

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I am afraid that you a WRONG it does work in RAW. here it is with the summicron 28 asph. All I have adjusted is vignetting at f2

 

I would add that this is a lens that I wouldn't use on the A7 anyway I just wanted to demonstrate that the app does work in RAW and we all know that the summicron vignettes quite a bit wide open. I just love this lens on the M

 

Lastly an apology for your 'borderline' rudeness would be within the festive spirit!!

 

with app

[ATTACH]413913[/ATTACH]

 

without app

[ATTACH]413914[/ATTACH]

 

 

Hi David,

 

Many thanks for showing the way and the proof of principle. ;)

How far can you push the App to remove vignetting?

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