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ISO Accuracy

The actual sensitivity of each indicated ISO is measured using the same shots as are used to measure ISO noise levels, we simply compare the exposure for each shot to the metered light level (using a calibrated Sekonic L-358), middle gray matched. We estimate the accuracy of these results to be +/- 1/6 EV (the margin of error given in the ISO specifications). In our tests we found that measured ISOs from the a7R match the marked ISOs within 1/6 stop accuracy, meaning ISO 100 indicated = ISO 100 measured.

Noise and Noise Reduction (JPEG)

This is our standard studio scene comparison shot taken from exactly the same tripod position. Lighting: daylight simulation, >98% CRI. Crops are 100%. Ambient temperature was approximately 22°C (~72°F).

Note: this page features our new interactive noise comparison widget. By default, we show you the default noise reduction settings of the camera tested, and three other models of the same class. You can select from all available NR options, and from other cameras. The 'tricolor' patches beneath the familiar gray/black/portrait images are taken from the same test chart, and show how noise impacts upon blue, green and red areas of a scene.

The a7R's JPEG noise is in-step with the Nikon D800 and Canon EOS 5D Mark III through about ISO 3200. At that point, the two DSLRs start to break away, with the a7R remaining very low. If you look at the color patches, you'll see why: Sony is pouring on the noise reduction. The only time any obvious noise shows up on the a7R is in the blue patch at the top ISO of 25600.

The camera's context-aware noise reduction does a reasonable job of protecting detail in the crop of the Queen's head, up until ISO 800. There's then a drop in detail as noise reduction it ratcheted up, and there's a further drop in detail at ISO 12,800 - at which point it's all pretty smudged.

Adobe Camera Raw noise (ACR 8.3, noise reduction set to zero)

Here we look at the RAW files processed through Adobe Camera Raw (in this case version 8.3). Images are brightness matched and processed with all noise reduction options set to zero. Adobe does a degree of noise reduction even when the user-controlled NR is turned off.

The amount of NR applied 'under the hood' is not high, but it does vary by camera (Adobe is attempting to normalize output across different sensors), so inevitably we are still looking at a balance of noise and noise reduction, rather than pure noise levels. However, the use of the most popular third-party RAW converter is intended to give a photographically relevant result, rather than simply comparing sensor performance in an abstract manner.

The a7R manages to keep noise levels down throughout its ISO range compared to both the Nikon D800 and Canon EOS 5D Mark III. The fact that the D800 has more noise than the a7R hints that Sony may be applying noise reduction to the Raw images. If you look at the crops, you'll see that the a7R's color noise appears to be 'smudged', unlike on the D800, which has a grainier appearance.

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Comments

Total comments: 813
2345
neil holmes

Seems fair.
I do think the A7 is a better camera in many ways though.

Comment edited 7 minutes after posting
2 upvotes
gerard boulanger

I am surprised the "cons" in the conclusion does not mention the shutter noise. The A7r is even noisier than the A7.
I guess pro won't like the noisy shutter?

5 upvotes
samhain

Loud shutter should definitely be a con a 'pro' level camera (if that's what this is)

1 upvote
Max Savin

I have an A7 and A7r. They are both much quieter than my D800 or 1DSmk3. They are noisier than an NX7.

2 upvotes
Fredy Ross

very difficult to understand why there is no mention of e-mount lenses losing the OSS when used in cropped mode. After all this time you should be well aware of this and not say only that all e-mount are compatible.

2 upvotes
Cheng Bao

1. Not all aps-c e-mount lens lose OSS
2. mounting aps-c e-mount lens on A7r is never the intended use of it

3 upvotes
Photato

"Solving the corner vignetting problem"
Way before Sony A7, there was Leica M8 and M9.
Back them the main topic was Vignetting and Shifted Microlenses.
It is pretty odd that this topic has not been raised around these Sony Digital Rangefinders.

3 upvotes
Stu 5

If you are shooting 3200 iso it means the edges are over 12,800 iso because of the vignetting problem.

0 upvotes
Zoron

Sony:"Winning."

6 upvotes
Zerg2905

That's for sure for Sony. What about the customer? Cheers! :)

1 upvote
Zerg2905

Only Gold? This camera deserves a rare element not yet found on Earth. This is The First and (probably not) The Last, The Alpha and Omega of all cameras. Ever. And ever. A-men! Hallelujah! Cheers, and cheers again! :) :) :)

19 upvotes
kadardr

UNOBTAINIUM

17 upvotes
Zerg2905

Right. Cheers! :D :D :D

0 upvotes
PaulDavis

Bionztaniumx make? Which name made sense to some chemist.

2 upvotes
itsmeavi

Kryptonite :P

0 upvotes
bobbarber

OK. I'm convinced. Time to save up.

8 upvotes
petemod

Only Gold? This camera deserves Platinum!

33 upvotes
thx1138

A list of cons as long as the pros and not all of them are minor, it got a fair result. Now combine an A7r with say a good AF system like in a m4/3 camera, triple the battery life and improve several other annoyances and then it might warrant a 90%. At the moment it's a superb sensor wrapped in an ok body. If only Olympus could fit this sensor to an E-M1.

15 upvotes
Juck

m43 lol

16 upvotes
thx1138

Sorry what's the point of your comment ???

2 upvotes
Jabba23

@thx1138 with all of the things you want it to be, it becomes a dslr again. The compromises are there because not all of the technology is available yet or it is but it would put it out of the price range of far too many people to make it viable.

0 upvotes
Stu 5

Or being held back for the replacement camera or because the camera was rushed to market.

0 upvotes
thx1138

@jabba23

That's a ridiculously long bow to draw and completely incorrect. Yes tripling battery life would be tough, but they have to do better, getting 200 shots if you are conservative is just not good enough. Other than that there's no excuse for the AF given how good Olympus and Fuji are on that front, there's no excuse for the lack of electronic first curtain shutter, given the A7 has it and there's no excuse for the cumbersome menu system. None of these require the camera to magically grow in dimensions.

1 upvote
Yxa

thx1138
You mean the Nikon D800?

0 upvotes
fabio riccardi

I have a question about lenses for full frame mirrorless cameras.
I notice that pretty much all the Sony lenses for these cameras have relatively small maximum aperture. The 55mm normal lens is 1.8, vs the 1.4 we are accustomed to for normal full frames. Similarly for the rest of the line. I guess that bright lenses also mean heavier, larger, lenses, which don't quite make sense on smaller camera bodies.
This kind of defeats the purpose of a full frame sensor, where you can benefit from the shallow depth of field it allows.
On APS sized sensors, brighter lenses can still be fairly compact. Fuji, Panasonic, and Olympus lenses are all much brighter than the new FF mirrorless Sony.
Brighter lenses on APS sensors deliver equivalent DOF and look than the dimmer lenses on FF. At the end what is gained with the full frame is lost with the smaller maximum practical aperture.
What do you guys think?
- Fabio

Comment edited 4 minutes after posting
1 upvote
joao 43

I think you should consider the A-mount lenses, like Zeiss 1.4's and Sigma's 1.4. If that is not enough you still have Voigtlander 35mm 1.2, 50mm 1.1 and 1.5, 75mm 1.8 and Leica's 0.9, 1.4. Do you have any lens on Fuji or Olympus that gives you the same DOF and same light gathering? I don't think so....
I don't think Fuji or Olympus offered anything better on the first year.

Regards.

Comment edited 34 seconds after posting
5 upvotes
Max Savin

All sorts of fast lenses can be used on this camera and are available now. Various adapters allow me to use my Nikon, Canon, and Leica lenses. I would get a Sony adapter if I owned any Sony Alpha lenses. This camera is a dream come true.

3 upvotes
fabio riccardi

My point is that large aperture lenses are impractical on these bodies.
Sony is making small aperture lenses because they fit better the size of the A7.
On smaller sensors, large aperture lenses are still small enough to fit the size of the body.
I guess that my question then is: if small body/lens size is an important factor, does FF still make sense?
- Fabio

2 upvotes
HFLM

However most need adaptors and use manual focus. This is not for everybody. A landscape shooter may however be o.k. with it.
A-mount lenses are larger together with adaptor, as would be fast lenses. Even 2.8 zooms would be very large and heavy.
For me the A7s make sense only with smaller primes.

2 upvotes
Dennis

I think there are already FF cameras with faster lenses available. If you make bigger lenses, then what's the selling point versus those cameras ? Personally, when I had f/1.4 lenses on APS-C, I shot them at f/1.8 or f/2 for shallow DOF - f/1.4 on FF is too shallow for my tastes. Anyway, when you why people would choose this camera over a FF DSLR, I don't think the omission of f/1.4 primes is significant.

0 upvotes
Erik Magnuson

To be fair, the Zeiss is also T-1.8 while the other brands 1.4's are often darker than spec at T-1.6 or T-1.7. The real difference is much less than the f-numbers imply.

0 upvotes
TrojMacReady

Actual measured transmission values of the 55mm lens are similar to those of most f/1.4 lenses.

Also, the theory that FF offers no benefit when apertures are smaller, is limited to situations where the shutterspeed is the limiting factor. Which isn't always the case. Reminds me of the Sony R1, when people were making a similar argument about its smaller apertures compared to its smaller sensor predecessors.
Until the output made them realize that the R1 still showed clear benefits in many situations.

2 upvotes
ihv

While sometimes it might feel like gambling, Sony has to be congratulated for pushing new ideas.

23 upvotes
joao 43

It's such a shame a site like this one with so many mistakes.
I'll clear one, the kit lens is sold apart. Please Dpreview correct because your wrong.

"although because it's a kit lens only available for the a7 - and not currently available separately"

It's sold by Amazon and several stores. The current price is 549€ on Amazon.de.
You guys should really get the story right, specially after the A7 flop review.

http://www.amazon.de/gp/product/B00HSHFPD0/ref=s9_psimh_gw_p23_d0_i2?pf_rd_m=A3JWKAKR8XB7XF&pf_rd_s=center-2&pf_rd_r=1Z67CK07AP7NMBT3ZK0D&pf_rd_t=101&pf_rd_p=455353807&pf_rd_i=301128

Regards

Comment edited 4 minutes after posting
4 upvotes
Richard Butler

It's not so much a case of being wrong, it's a case of not knowing enough about other markets - it's not sold separately in the US and Sony US don't necessarily know what Sony Europe is doing.

I'll clarify the text.

16 upvotes
joao 43

It was a mistake. Error. Like many things in A7's review.... you should take advantage of A7's users here on Dpreview that might know more a thing or two... A simple quick search would do trick on this matter, since you took the trouble to write on the conclusion. It's been available quiet some time now, even US customers can buy things abroad. The US are not the world when you write to all other countries.

Regards

3 upvotes
Juck

You need a hobby mate

17 upvotes
RFC1925

I hear cameras and photography are good.

5 upvotes
ric63

Yes.
I have heard the same thing.
Mr Fox Talbot would be amused.

1 upvote
joao 43

Juck. :D I'm not the one reviewing cameras for a living, I use them for a living. The remark "not currently available separately" has been widely used before, and does consumers no good. It's available and a quick search over google shows it. Best wishes.

1 upvote
Ben O Connor

Conculution page; Mic jack-headphone jack/port written twice... Or are these two different thing ?

Comment edited 3 minutes after posting
0 upvotes
D1N0

Depriving people of their opportunity to complain about "only silver". How can you!

21 upvotes
MustangJoe

Don't worry. They'll find something to complain about.

3 upvotes
Ryan_Valiente

only gold?

what the hell DPR!

1 upvote
Kwick1

Interesting that, in the summary, there's no mention of high ISO capabilities - good, bad or otherwise.

0 upvotes
thx1138

Same as D800(E), so pretty good especially when downsampled.

0 upvotes
BobYIL

A well deserved Gold rating..

14 upvotes
Bervilat

Look at the tiny text on the studio image. Veeery nice IQ.

1 upvote
Total comments: 813
2345