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The Sony A7 thread [Merged]

dmclalla

By dmclalla
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dwbell

dwbell

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Showing how little I know about Sony / Zeiss lenses....

 

 

At 21sec in the video above is a still (with obligatory Ken Burns) of a Carl Zeiss Sonnar E 1.8/24 ZA lens mounted on an A7.

 

I haven't seen it mention in the launch line up. Is it "new" or an existing Sony lens mounted on the new body? Is there an adapter in that picture.

 

Again, I don't even understand Sony lens sizes / terminology but would be interested to hear what this 24mm is?

 

Cheers

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chrismuc

chrismuc

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Zeiss is able to design wide angle lenses for mirrorless cameras without color shift (for Sony NEX, Sony FE, Sony RX1, Fuji X), Olympus and Panasonic are able for their micro 4/3 system and Fuji for their APS-C X system.

 

In 2006 Leica released the M8, this means at least since 2004 they knew that conventional wide angle M lens design does not work properly with digital sensors. So why the hell are they designing and releasing 18/21/28/35 mm wide angle lenses since then until today that are developed for film cameras, not for digital and that need color cast correction? How absurd is that! The Sony A7® with FE Zeiss lenses will work perfectly and that will be the fair penalty for Leica and their ignorance.

 

Btw, Schneider and Rodenstock are in the same sinking boat with their inappropriate wide angle lenses for medium format 54x40mm 60/80 MP backs (requirement of center filter, color cast correction files and PP color cast correction).

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dwbell

dwbell

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Penalty? Yours will be to use a 55 as big as a 90 Leica. :D

 

Hehe.

 

However, the 'size' argument doesn't really hold water which ever way you cut it. Forum tradition has it that DSLR's are "Bazookas" and so on, the oh so wonderful small Leica kit blah blah. Then you pick up an M6 and think, hold on, back then it was true, now the M240 is - like us all - getting a bit porky, and heavy to boot! Then I shot every day with an X100S and realised the M9+35cron is a joke.

 

So it's always relative. The A7R is "smaller", probably still not pocketable with a 35 on like the X100S, and probably the same size 'package' as the M240 with 35 cron.

 

Don't think there's a winner or loser in the very subjective size argument.

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almoore

almoore

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Don't think there's a winner or loser in the very subjective size argument.

 

Au contraire, the Mighty Leica wins every time.

 

The Leica M9 used to be the best full-frame digital because it was the smallest, but the paradigm shifted when the Sony RX1 was announced. At that point we all decided that we wanted a certain heft to our cameras. Obviously, this doesn't apply to lenses, where compact size is everything, unless, of course, the lens has a name that ends in Lux...

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colonel

colonel

Posted
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Showing how little I know about Sony / Zeiss lenses....

 

 

At 21sec in the video above is a still (with obligatory Ken Burns) of a Carl Zeiss Sonnar E 1.8/24 ZA lens mounted on an A7.

 

I haven't seen it mention in the launch line up. Is it "new" or an existing Sony lens mounted on the new body? Is there an adapter in that picture.

 

Again, I don't even understand Sony lens sizes / terminology but would be interested to hear what this 24mm is?

 

Cheers

 

It is an APS-C lens designed for the Nex series

The FE mount and E mount are the same, so you can mount any APS-C lens on the FF camera.

The software of the A7 lets you select between a cropped and a non-cropped mode.

The non-cropped mode allows the lens to use the full sensor but will undoubtedly result in heavy vignetting. The crop mode allows the lens to use the APS-C size centre pixels, just as Nikon does with its FF cameras.

 

rgds

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gyoung

gyoung

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[quote name=colonel;2537201 snip...

Nevertheless' date=' the Leica wide angles are very difficult to deal with. The are ok on M4/3s with its tiny sensor but even on APS-C, as we have seen with the Nex-7, have problems. Athough the Nex-6 is pretty good.

 

and snip again...

The comment about R lenses above is a good one. They should have no problems with a good adaptor and there are some excellent ones out there.

 

[/quote]

 

My expereience of M4/3 was that nothing shorter than 50mm that I had was useable, very fuzzy in the corners, and that is equivalent to 100mm. The 35 Summicron asph was barely ok if you didn't want the extreme corners, the 28/1.9 Ultron was aweful, so I didn't bother trying the 21/2.8 asph or the 15/4.5.

The widespread assumption that all slr lenses will be ok on these cameras is in my experience not necessarily so, it seems to depend on individual lens design. I have a 24/2.8 Nikkor which has performed well on film for 20+ years, and is generally considered better on film than the 20/2.8 Nikkor, so when I decided to get am APS-c dslr I thought it would do nicely as a 35 equivalent, 'tests' on a friends D80 (10 mp?) were ok so I bought the D7000, only to find that on that camera it wasn't too good in the corners. If you look at Photozone's tests (which came out after I bought the camera) you see that its abysmal in the corners on the D7000, even stopped down its not too good, and its worse than on the D200, it seems this lens doesn't work well with high pixel density sensors. In the reverse of the film situation the 20/2.8 Nikkor is better than the 24mm, and I also have a cheap 17/3.5 Tokina which also works ok on the D7000, or at least, as well as it does on film. If you look at the test on full format, the film situation is returned too, with the 24 doing 'ok', and better than the 20, this on a D3x which I think is 24mp, no tests on the D800 as far as I know, with a higher pixel density sensor.

I considered trying for an R 24mm lens, but there was a thread about that not too long ago which seems to indicate that even if it worked on high density sensors it wouldn't be worth going for, an old design and even in its day not the best.

So, on 36mp A7R, we will have to wait and see what (apart from from its own lenses) will work. If the camera needs bulky slr lenses for anything less than 50 my own feeling is I might as well use a dslr , with an optical finder.

 

Gerry

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dwbell

dwbell

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It is an APS-C lens designed for the Nex series

The FE mount and E mount are the same, so you can mount any APS-C lens on the FF camera.

The software of the A7 lets you select between a cropped and a non-cropped mode.

The non-cropped mode allows the lens to use the full sensor but will undoubtedly result in heavy vignetting. The crop mode allows the lens to use the APS-C size centre pixels, just as Nikon does with its FF cameras.

 

rgds

 

Much appreciated Harold.

So, it'll give you a 24mm FoV but only use a smaller portion of the sensor. (Or you can use the whole sensor but have a "frame" of pixels where no light hit.)

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edwardkaraa

edwardkaraa

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really? look at the 25mm/2,8 for Nikon and Canon, not very good IMHO

 

Gerry

 

Really? The Zeiss 25/2.8, though now discontinued and replaced by the 25/2, was absolutely tack sharp across the frame from wide open at landscape distances. However, since it didn't have floating elements, it wasn't very well corrected for closer distances, which gave close up shots a lot of character, similar to many under corrected Leica M lenses that so many of you rave about as having character ;)

 

It was also very small and light weight, and many users really adore this lens.

 

PS: it seems to me that any underperforming glass from Leica has some mystical attributes aka as drawing style, Mandler (for wide open veiling haze), character... etc, while the same crap from other manufacturers would be considered as rubbish.

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jedi996sps

jedi996sps

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It is an APS-C lens designed for the Nex series

The FE mount and E mount are the same, so you can mount any APS-C lens on the FF camera.

The software of the A7 lets you select between a cropped and a non-cropped mode.

The non-cropped mode allows the lens to use the full sensor but will undoubtedly result in heavy vignetting. The crop mode allows the lens to use the APS-C size centre pixels, just as Nikon does with its FF cameras.

 

rgds

 

At 1min15sec they show a close up of the lense and make reference to an adapter, this together with the lense having ZA on the front, would imply it is a FF Alpha series lense.(?)

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k-hawinkler

k-hawinkler

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Showing how little I know about Sony / Zeiss lenses....

 

 

At 21sec in the video above is a still (with obligatory Ken Burns) of a Carl Zeiss Sonnar E 1.8/24 ZA lens mounted on an A7.

 

I haven't seen it mention in the launch line up. Is it "new" or an existing Sony lens mounted on the new body? Is there an adapter in that picture.

 

Again, I don't even understand Sony lens sizes / terminology but would be interested to hear what this 24mm is?

 

Cheers

 

 

Please have a look here: http://www.l-camera-forum.com/leica-forum/2536620-post1395.html

 

It looks like I have that lens for my NEXs.

After removing a baffle I will see what it does in FF once I have the A7R.

 

Of course, that could be a different lens I don't know about.

In that case please ignore my post.

 

I checked. That looks like my lens.

In the reference I gave one can see dark corners, so heavy vignetting.

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gyoung

gyoung

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Really? The Zeiss 25/2.8, though now discontinued and replaced by the 25/2, was absolutely tack sharp across the frame from wide open at landscape distances. However, since it didn't have floating elements, it wasn't very well corrected for closer distances, which gave close up shots a lot of character, similar to many under corrected Leica M lenses that so many of you rave about as having character ;)

 

It was also very small and light weight, and many users really adore this lens.

 

PS: it seems to me that any underperforming glass from Leica has some mystical attributes aka as drawing style, Mandler (for wide open veiling haze), character... etc, while the same crap from other manufacturers would be considered as rubbish.

 

Its tests on Photozone don't come out very well. perhaps because its not so good at nearer distances? If it really is that good at 'landscape' distances it might suit me well, not so big and heavy as the f/2

 

Gerry

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jedi996sps

jedi996sps

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Please have a look here: http://www.l-camera-forum.com/leica-forum/2536620-post1395.html

 

It looks like I have that lens for my NEXs.

After removing a baffle I will see what it does in FF once I have the A7R.

 

Of course, that could be a different lens I don't know about.

In that case please ignore my post.

 

I checked. That looks like my lens.

In the reference I gave one can see dark corners, so heavy vignetting.

 

i just googled it and it is an F mount lense :)

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