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BPD_1938

Canon 5D Mark 4 (IV) Sensor Results.

…….Drum Roll…….

And the winner is…. Well not Canon, sorry but the 5D mark 4 is still behind a few of it’s peers. The results show that it is better than the 5D mark 3, the D610 and D810 as well as the 6D. But it’s still behind not only the 1Dx models, but numerous models from other companies such as the D750, K1, D4, Df and the A7S.

Considering the MP count and the fact that the sensor is dual pixel requiring a lot more wiring it’s probably a very good result. With this in mind there are possibly only two camera models than can currently rival it*, the Nikon D750 and the Pentax K1.

You can check out the results here.

*That I have tested to date.
BPD_1943

Sony A7R II Long Exposure Tests.

A7R II is the buzz word at the moment in the photography circles, with most reviews holding it in extremely high regard. So naturally I had to test the sensor for long exposure noise.

The results can be seen on the long exposure sensor testing page, and here are my thoughts:

There is no doubt, the A7RII is very impressive, considering the size of the sensor it’s delivering much better results than the D810 or the 5Ds(r). It’s performance is generally much better than the older model (A7R) and it’s results are almost identical to the Canon 6D, keeping in mind the 6D is only 20MP one can’t but help be impressed.

One of the reasons I started my long exposure testing was because no one was doing long exposures at high ISO. All the low light tests performed I could find were at best a second, and in most cases much shorter than a second, in some cases as fast as the body could shoot (1/8000th). But sensor behaviour for longer exposures is not consistent, and in some cases it’s not very linear. What is good for sport is not good for astrophotography.

The A7RII’s sensor behaviour is a very clear example of why this test is important. There is no doubt for general low light work or sport this camera is going to be a killer, but what about longer exposures? At 30 seconds the A7RII is holding it’s own, but starting to loose the edge it had at 1 second, and by 5 minutes significant noise has been introduced into the shot, and it looses it edge to many other models. There is no doubt that Long exposure NR enabled would fix some of this, but not all.

So my conclusion is, it’s going to be an awesome camera killing other models for shorter long exposures (1-10 secs), it is going to match the high end models in the 10-30sec range having the benefit of more MP, but for longer exposures other models start to win out including the 5Ds(r), I’ll be very interested to see how this one goes in the field and I think there is the possibility of further testing to understand the ISO to time relationship, for example higher ISO’s for shorter periods could yield better results than lower ISO for longer periods.

Please keep in mind my tests do not take into consideration other factors such as dynamic range (DR) or how linear the ISO relationship is (ISO-less or not). I am purely interested in the noise (floor) and what you will have to deal with in post.

Mortimer Bay Aurora

70D and D7100 Sensor tests.

How well do crop sensor cameras work for long exposure work? I’ve just finished testing the 70D and D7100, you can review the results on the sensor test page. In regards to the Canon 7D mark 2, once Adobe supports the 7D mark 2 with the Camera RAW software I will be able to follow the same workflow and upload a comparison. So stay tuned, I expect it will perform better than the 70D.

 

Aurora Australis

Reviewing the D810 and D610 Sensors.

Hi All,_MG_6790

So the new Nikon D750 is awesome right? But there seems to be some very conflicting information available on the internet.

Nikon have claimed that the new sensor in the D750 performs much better than the existing technology currently being used in the D8X0 and D6X0 cameras, particularly when it comes to low light and noise performance.

However Dx0’s testing revealed that the D750’s sensor is only just on par with the D610 and offers little advantage based on their testing.

So how do the D610 and the D810 compare to the new D750 for long exposures?

Well the data is in, head on over to the Long Exposure Sensor Test page for the results. Thanks again to Walch Optics for allowing me to run the tests.