October 30, 2014, 09:13:19 AM

Author Topic: 7D vs. 70D: Which has better image quality?  (Read 17552 times)

Don Haines

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Re: 7D vs. 70D: Which has better image quality?
« Reply #15 on: February 05, 2014, 09:22:17 PM »
But the question of this thread is about IQ, not AF.

Accurate focus is critical for image quality.
As I am fond of saying.... Who cares how many stops of dynamic range a blurry picture has.... Accurate focus is by far the most critical aspect in the search for better images... Nobody makes a sensor or lens that could have saved this shot....

(Shot with an SX-50, a camera which refuses to focus well on Snowy owls)
« Last Edit: February 05, 2014, 09:25:47 PM by Don Haines »
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Re: 7D vs. 70D: Which has better image quality?
« Reply #15 on: February 05, 2014, 09:22:17 PM »

ishdakuteb

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Re: 7D vs. 70D: Which has better image quality?
« Reply #16 on: February 05, 2014, 09:44:17 PM »
...no noise is even better but we're still waiting for Canon to catch up to everyone else on noise metrics.

where can you find a camera that delivers no noise?  if there is one that par with 70d or 7d specs, i would pay up 10K for that even though i like noise (note: noise that i add in, not from camera)

neuroanatomist

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Re: 7D vs. 70D: Which has better image quality?
« Reply #17 on: February 05, 2014, 10:10:24 PM »
By the way, “noise metrics” do not only apply to iso’s below iso 1600. Above iso 1600 Canon is on par or preforming better.

Any good DRone knows better than to let their ISO get out of the triple digits, and it's really best if the first of those three digits is a '1'.
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LumenMedia

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Re: 7D vs. 70D: Which has better image quality?
« Reply #18 on: February 05, 2014, 10:12:47 PM »
I used my 7d during last 3 years and after testing 70d i sold it and never regret. Better color reproduction, greater dynamic range, better noise structure (i hate 7d noise, it often destroyed shadows and uniform color surfaces), better and more reliable focus, better low light focus, video af is amazing, touch screen and wi fi is also very useful. The only downside - lack of magnesium alloy body
« Last Edit: February 05, 2014, 10:31:25 PM by LumenMedia »

Radiating

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Re: 7D vs. 70D: Which has better image quality?
« Reply #19 on: February 05, 2014, 11:37:43 PM »
I really enjoy my 70D but wonder if the 7D would have better IQ. When I look at DxO scores for these two, it's  pretty much a dead heat. Anyone out there have first-hand experience comparing the two? Thanks in advance.

That is a bit of a silly question. Comparing the 70D against the 7D is like comparing a Ferrari 458 Italia to a Brick in a race. The 70D is much better.

The 70D is a 40 megapixel camera, with almost no AA filter, compared to a 18 megapixel camera that is 4 years older. The 70D has 9% less noise and delivers images that are 15% to 20% sharper, according to back to back tests.

I have owned 3 7D bodies, and currently have a 70D body. There is no comparison between the two. The 70D is way better.

For example you'll see lenses are 10 Mpix on the 7D on DXO, on the 70D they are 12 Mpix.

The 70D also has less noise at ISO 200 than the 7D has at ISO 100 so base ISO performance is incredible.


70D = 15-20% Sharper
70D = 9% less noise at LEAST at any ISO (in many cases there is a significant difference)
70D = 50% less noise at base ISO for landscapes
70D = Way better dynamic range at high ISO (same DR at low ISO)
70D = Way better color and tone

DXO scores are about as meaningful as taking the horsepower of a car, multiplying by it's price and dividing by it's model number. They're an arbitrary choice of combining numbers that have little meaning, you need to look at the actual data.

The image quality of the 70D is much better. The only reason you buy a 7D is if you need crazy autofocus and burst speeds for sports or action or incredible weather sealing. Otherwise the 70D just obliterates it.
« Last Edit: February 05, 2014, 11:44:45 PM by Radiating »

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Re: 7D vs. 70D: Which has better image quality?
« Reply #20 on: February 06, 2014, 01:15:50 AM »
You’ve tested sevral 70Ds?
In a lab or in the field?
Can you show some of your test results? I like to see the “real world” difference between the 7d and 70d and if there is any copy variation between the 70ds.

This will have to suffice

www.canonrumors.com/forum/index.php?topic=16713.0

otherwise it's $280/hr + incidentals for custom work.

Quote
By the way, “noise metrics” do not only apply to iso’s below iso 1600. Above iso 1600 Canon is on par or preforming better.

yes, it's certainly comparable at the high end... FWIW, even compared to the MFT sensor in the -EM1.
comparison image for editorial purposes from DPreview.com

edit - oops, don't look at the Fuji results.
« Last Edit: February 06, 2014, 01:17:44 AM by Aglet »

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Re: 7D vs. 70D: Which has better image quality?
« Reply #21 on: February 06, 2014, 01:54:33 AM »
Typical Aglet........

But when push comes to shove.


Reading between his, as usual, inflated lines he took a series of shots at different iso's with the lens/body cap on, in a shop, which he botched.

And why he feels +4 stops is a good place to judge noise I just don't know.
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Re: 7D vs. 70D: Which has better image quality?
« Reply #21 on: February 06, 2014, 01:54:33 AM »


neuroanatomist

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Re: 7D vs. 70D: Which has better image quality?
« Reply #23 on: February 06, 2014, 09:17:50 AM »
The 70D is a 40 megapixel camera

Are all of your other numbers artificially exaggerated like that?

The 70D gives sharper images SOOC, due to a weaker AA filter.

http://www.the-digital-picture.com/Reviews/ISO-12233-Sample-Crops.aspx?Lens=458&Camera=673&Sample=0&FLI=0&API=3&LensComp=458&CameraComp=845&SampleComp=0&FLIComp=0&APIComp=3
Wow. That is not a small difference.

That's true.  The 7D has a particularly strong AA filter, whereas the 70D has a particularly weak one, I expect that's necessary due to the dual pixel AF.  But even the EOS M is noticeably sharper than the 7D.

Worth noting that when I refer to the test above as SOOC, these aren't JPG images (so Digic doesn't really matter), they are RAW images processed identically.  But it's also worth noting that with proper post
-processing, one would likely not process the images identically - more sharpening would be applied to the 7D images.
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Radiating

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Re: 7D vs. 70D: Which has better image quality?
« Reply #24 on: February 06, 2014, 01:23:57 PM »
The 70D gives sharper images SOOC, due to a weaker AA filter.

http://www.the-digital-picture.com/Reviews/ISO-12233-Sample-Crops.aspx?Lens=458&Camera=673&Sample=0&FLI=0&API=3&LensComp=458&CameraComp=845&SampleComp=0&FLIComp=0&APIComp=3

Wow. That is not a small difference.

Yeah the 70D is a game changer, paired with the Sigma 18-35mm, which is also a game changer it is the first Canon crop camera that I haven't loathed using over my full frame.

The first time I had to use my backup 7D and 15-85mm I threw up a little in my mouth when I saw the pictures it took.

The first time I used a 70D and sigma 18-35mm, my impression was "wow, this is basically a lighter version of my 24-70mm f/2.8 and 5D Mark III). Tests back this up, showing that this is the first Canon normal zoom and crop camera combo that delivers full frame like detail levels.
« Last Edit: February 06, 2014, 01:25:36 PM by Radiating »

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Re: 7D vs. 70D: Which has better image quality?
« Reply #25 on: February 06, 2014, 11:07:42 PM »

privatebydesign

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Re: 7D vs. 70D: Which has better image quality?
« Reply #26 on: February 06, 2014, 11:12:54 PM »
Why would you feel compelled to give such strong views on equipment you have hardly touched?
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neuroanatomist

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Re: 7D vs. 70D: Which has better image quality?
« Reply #27 on: February 07, 2014, 06:54:42 AM »
Why would you feel compelled to give such strong views on equipment you have hardly touched?

What, you mean you can't just go into a shop, stick a memory card in a demo camera, take one shot with the lens cap on, go home and push that one shot 5 stops, and know enough about how that camera performs to make your decision to not buy it, and to bash it on the Internet?

 ::)
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Re: 7D vs. 70D: Which has better image quality?
« Reply #27 on: February 07, 2014, 06:54:42 AM »

Don Haines

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Re: 7D vs. 70D: Which has better image quality?
« Reply #28 on: February 07, 2014, 08:10:31 AM »
Why would you feel compelled to give such strong views on equipment you have hardly touched?

What, you mean you can't just go into a shop, stick a memory card in a demo camera, take one shot with the lens cap on, go home and push that one shot 5 stops, and know enough about how that camera performs to make your decision to not buy it, and to bash it on the Internet?

 ::)
I did go into a camera shop....
I did stick a memory card into the demo 70D....
I took several dozen shots (with the lens cap OFF)...
I decided that it was much nicer than my 60D....
I decided not to buy it as I want a 7D2 and my 60D will do quite nicely while I wait...
The best camera is the one in your hands

MichaelHodges

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Re: 7D vs. 70D: Which has better image quality?
« Reply #29 on: February 07, 2014, 09:17:31 AM »
Based on those test results and the feedback in this thread (and others) I'm very close to selling my 7D and picking up the 70D.

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Re: 7D vs. 70D: Which has better image quality?
« Reply #29 on: February 07, 2014, 09:17:31 AM »