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Resolution Chart Comparison (JPEG and Raw)

Images on this page are of our standard resolution chart which provides for measurement of resolution up to 4000 LPH (Lines Per Picture Height). A value of 20 equates to 2000 lines per picture height. For each camera we use the relevant prime lens (the same one we use for all the other tests in a particular review). The chart is shot at a full range of apertures and the sharpest image selected. Studio light, cameras set to aperture priority (optimum aperture selected), image parameters default. Exposure compensation set to deliver approximately 80% luminance in the white areas.

What we want to show here is how well the camera is able to resolve the detail in our standard test chart compared to the theoretical maximum resolution of the sensor, which for the charts we shoot is easy to work out - it's simply the number of vertical pixels (the chart shows the number of single lines per picture height, the theoretical limit is 1 line per pixel). Beyond this limit (which when talking about line pairs is usually referred to as the Nyquist frequency) the sensor cannot faithfully record image detail and aliasing occurs.

This limit is rarely attained, because the majority of sensors are fitted with anti-aliasing filters. Anti-aliasing filters are designed to reduce unpleasant moiré effects, but in doing so, they also reduce resolution (the relative strength and quality of these filters varies from camera to camera). In theory though, a sensor without an AA filter, when coupled with a 'perfect' lens, will deliver resolution equal to its Nyquist limit. Therefore, even though it may be effectively unattainable with normal equipment in normal shooting situations, an understanding of a sensor's theoretical limit provides a useful benchmark for best possible performance. Nyquist is indicated in these crops with a red line.

On this page we're looking at both JPEG and Raw resolution. For a (more) level playing field we convert the latter using Adobe Camera Raw. Because Adobe Camera Raw applies different levels of sharpening to different cameras (this confirmed) we use the following workflow for these conversions:

  • Load Raw file into Adobe Camera Raw (Auto mode disabled)
  • Set Sharpness to 0 (all other settings default)
  • Open file to Photoshop
  • Apply the Unsharp mask filter tuned to the camera, usually 100%, Radius 0.6, Threshold 0
  • Make 100% crops and save the original file at JPEG quality 11 for download
JPEG (5184 x 3456) 4.7MB Raw (5184 x 3456) 4.8MB

Vertical resolution

JPEG
Raw

Horizontal resolution

JPEG Raw

The EOS 700D's JPEG files - like those of the EOS 650D - display slightly less aggressive sharpening than we saw on the earlier Canon EOS 600D. This has little meaningful effect on perceived resolution though and does limit the presence of edge halos, which are more pronounced here in our two-tone resolution target than in our real world images. Based on pixel count, you'd expect to distinguish all nine lines of our resolution chart at around 2400 LPH.

Processing the camera's Raw file with ACR 7.4 and then applying a moderate amount of sharpening in Photoshop yields a 'cleaner' image without any sharpening halos, yet moiré patterning takes on a more significant presence.

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Comments

Total comments: 13
RyanBoston

How is it that the 550D scores higher than this camera? Even in the compare to score section, raw scores higher on the 550D. I find it weird that a camera 3 generations newer scores worst.

My girlfriend sold her 550D and wants a new touchscreen Canon, but it feels like the quality has not moved ahead in years.

0 upvotes
Nien

The score, as you can see by the review, takes into account not just the performance of the gear itself but also it's performance when compared to the others in the same range, below and above.

So, when 550D was launched for example, its features were, overall, considered better than average in a way that it scored a gold award of 77%.

This model however, has shown many good features too but a few (irrelevant for me) not so good features when compared to average.

Yet, 77% to a 76% in my opinion, in this case, is a absolutely irrelevant difference.

Its a good camera.

0 upvotes
Kishore Pratap Sanghvi

I am graduating from a bridge camera to a DSLR. Have been a hobby photographer for many years primarily doing landscape photography but I do it only when on a vacation that would be twice a year. I was a little confused whether to buy a Canon 700D or a Nikon D5300. I have always used Canon cameras before and after going thru many reviews comparing the two cameras I am not wiser. I also understand that once one buys a DSLR one continues to buy cameras of that family so that it can save money on lenses. Assuming that the quality of photos is not much different in the two cameras is the touch screen in 700D so useful that I should buy a Canon or the WIFI-GPS so important in the Nikon. As there anything else that help me decide between the two. Your advice would be most helpful.Tx. You can reply directly on my mail - drkpsanghvi@gmail.com

0 upvotes
ravi pratap

since u have been using canon , it is better to go for 700d as u r familiar with canon system and picture style and may have canon lenses with you. i find canon 700d is nice cam with cleaner sharper image with better color than nikon.

0 upvotes
zdenek nostalgig

Nikon always have bean a crap for landscapes...I mean in case we talking about cheaper model DSLRs. Nikons green color is absolute joke and ISO stuck ....stay with canon...Nikon is great for moving objects r portraits...but as a landscape photographer I will never ever go for Nikon unless I can buy D4.

0 upvotes
ravi pratap

canon 600d or 700d ?
i have been carefully seeing 1000s of photos taken by 600d and 700d on flickr and other review sites including this top cam site, in review images 600d looks better on most parameters notably sharpness and color but on flickr photos 600d pix looks a bit less sharp to 700d pix which is more evident on night landscapes shots.
Especially a few shots on 700d plus canon 18-135 of hongkong night landscape is very sharp with great color...which none of nikon, sony or pantex match...i m in dilemma , can the 600d with 18-135 canon match 700d?
experts are requested to clear the doubt, thanks!

0 upvotes
tophy42

its very great camera and the new design is beautiful
my bro buy one yesterday and till this moment never stopped shooting

Really great product

0 upvotes
Neo111

An outstanding review as usual. I just wish camera makers would let cameras be cameras and camcorders be camcorders. All I want is a camera. Take away the video mode gubbins and we would see a big drop in price. I can buy a pocket camcorder if I need urgent video. Why stick it in a camera at all? Better buffers could be included and also better features by knocking out the video stuff. Well, that's what I think anyway.

Comment edited 2 minutes after posting
6 upvotes
rinkos

blah blah blah ..cannon stays cannon ..all the new shiny freaks will rush on buying a camera that is basically the same as the one they had 3 years ago .
no true innovation from cannon for a long while now .

just for once i wish they would atleast try to innovate something new

2 upvotes
Dave Smith Trelawnyd

A nice camera that replaced my 600D after it ingested yellow steam on a volcano!
The camera does everything I ask of it including astro photography, and the touch screen is used far more than I thought it would be, all in all an excellent camera.

0 upvotes
Pepe Le Pew

The Rebel series are getting worse and worse every year

3 upvotes
PDBreach

How so? This is an upgrade..

0 upvotes
cor ela d obe x6Ps6

@pepe... then, what is the best DSLR?

1 upvote
Total comments: 13