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Alpha season 1focus on the family revirw manual#
Alpha season 1focus on the family revirw iso#

The 1Ds has lower default noise reduction than the 5D Mark II, producing a more 'honest' output, but one that shows visible noise at anything over ISO 800. As with the original 5D, the 1Ds Mark III is noisier than the 5D Mark II from ISO 800 and stays that way till ISO 3200, at which point the difference is quite marked (the 5D Mark II shows virtually no chroma noise). This is partly down to noise reduction - there's no doubt that the Mark II is using more (and more effective) NR, particularly for chroma noise - but some of this must also be down to better hardware.Ī comparison with the EOS-1Ds Mark III is more interesting as the two cameras have the same nominal resolution. What we can see is that even at ISO 800, the original 5D is showing more noise, and continues to be noisier than the Mark II all the way to ISO 3200 (the highest setting on the MK I), though it retains its per-pixel sharpness advantage all the way up the scale. This comparison presents the same kinds of problems as with the D700, namely that the original 5D is almost half the resolution as the 5D Mark II.

Alpha season 1focus on the family revirw manual#

Canon EOS 5D: Canon 85 mm F1.8 lens, Aperture Priority, Manual WB,ĭefault Parameters (Standard), JPEG Large / Fine.

Canon EOS-1Ds Mark III: Canon 85 mm F1.8 lens, Manual exposure, Manual WB,.

While it may not the first choice for users who need the best high ISO performance (and over 6400 it's really 'emergency use only'), it is still a very good option that will produce comparable results in the same circumstances as the D700 - certainly at normal enlargement sizes. What this means is that Canon has managed to walk the tightrope between high resolution and manageable noise pretty successfully, retaining a good balance of detail and noise in the most commonly used ISO range, and providing usable output at higher settings through heavy - but not excessive - noise reduction. Of course you can also turn down the noise reduction a little on the 5D Mark II if you prefer - see the next page. The fine grained noise produced by the D700 is less objectionable in pictures than the rather more processed looking noise and noise reduction of the 5D Mark II, but in truth at normal enlargement sizes the difference between these two cameras will be minimal. At the pixel level there is very little difference in noise up to ISO 800, but you can see Canon applying increasingly high noise reduction from then on, meaning that by ISO 3200 the 5D Mark II's resolution advantage has been wiped out and the the D700 steps into the lead, albeit by a whisker. There's no two ways about it if you're looking for this kind of resolution at higher ISO settings the EOS 5D Mark II runs rings around the A900.Ĭompared to the Nikon it is harder to call, with the 5D Mark II having almost double the pixel count of the D700. Once you get above ISO 800 the Alpha 900 starts to fall behind the rest of the pack, with considerably more chroma noise and obvious noise reduction artefacts. In truth there's little practical difference between any of the cameras here at the lower ISO settings, with all three essentially noise-free up to ISO 400.

Sony Alpha A900: Sony Zeiss 85 mm F1.4 lens, Manual exposure, Manual WB,ĭefault Parameters (Standard), High ISO NR (Default: Normal), JPEG Large / Fine.

Nikon D700: Nikkor 85 mm F1.8 lens, Manual exposure, Manual WB,ĭefault Parameters (Normal), High ISO NR (Default: Normal), JPEG Large / Fine.Canon EOS 5D Mark II: Canon 85 mm F1.8 lens, Manual exposure, Manual WB,ĭefault Parameters (Standard), High ISO NR (Default Standard), JPEG Large / Fine.There is no doubt this is a response to the Nikon D3 and subsequently D700, both of which feature the same maximum sensitivity. Fn I-3 (giving a remarkable 10-stop range of 50 - 25600). The EOS 5D Mark II is the first Canon DSLR with an upper ISO setting of 6400 as standard, which can be expanded a further two stops via C. Room temperature is approximately 22☌ (~72☏), simulated daylight lighting. (Note that noise values indicated on the graphs here can not be compared to those in other reviews). The image sequence is run through our own proprietary noise measurement tool (version 1.5 in this review). ISO 200, 1/200 sec for consistency of exposure between cameras). To measure noise levels we take a sequence of images of a GretagMacBeth ColorChecker chart (controlled artificial daylight lighting). Many modern cameras also employ noise reduction and / or sharpness reduction at higher sensitivities. By amplifying the signal you also amplify the noise which becomes more visible at higher ISO's. The works by turning up the "volume" (gain) on the sensor's signal amplifiers (remember the sensor is an analogue device). ISO equivalence on a digital camera is the ability to increase the sensitivity of the sensor.