The last couple of days provided some really spectacular skies with amazing vapor trails and fluffy clouds. So I grabbed a selection of cameras and shot a bunch of timelapse which you can see cobbled together in this clip. I used a Sony PMW-350 and a Canon 350D and 550D. Amazing how well they match after a quick grade. I also included an previously un-used Aurora shot from Iceland at the end. The name of the clip comes from the fact that clouds are made of water vapor and ice crystals.
You can also watch it in HD on Exposure Room.
As you may have seen from my earlier post I became the owner of the new Canon T2i (or 550D as it’s known in the UK) at the weekend. Clearly before using any camera in anger it’s important to see what it can and can’t do. I will say that I am not a Canon DSLR expert. I have been following the fuss and much admire some of the work done with these cameras by Phil Bloom, but frankly after playing with the Canon over the weekend I have to say I’m disappointed. Yes you can achieve shallow depth of field very easily and you do get a filmic look to the pictures, but look at the footage on a big monitor and it just looks soft. At first I wondered if this was the lens I was using, so I tried a couple of others including a nice Tamron 28mm prime. I tried different apertures, shutter speeds etc, but every clip I’ve taken looks soft. In isolation, on scenes with low detail this isn’t immediately apparent, but anything with lots of fine detail looks soft. Some of this is aliasing, look at the roof of the house in the T2i image, it appears to have diagonal roof tiles, this is a pretty typical aliasing artifact. I shot some closer shots of the buildings and the brickwork aliased like crazy.
Looking at the flowers picture you can see that the EX1 has picked up more of the subtle texture, or at least it has recorded more of the texture. I’m sure some of the Canon’s softness is due to compression artifacts. The other thing that I found is that it is tending to crush blacks a bit. I have played around with the picture styles and you can reduce this a bit, but there is very little detail in deep blacks, which would IMHO make grading tricky. The one good thing I did find was that it is very noise free at 200 and 400 asa, it’s also useable up to 800 asa or at a push 1600asa, so it would make a good camera for very low key scenes, provided you use a good fast lens. Looking at the Canon pictures there was something pleasing about the deep, almost crushed blacks. I think this helps contribute to the Canon DSLR “look” so I quickly threw together a new picture profile for the EX1/3 and PMW-350, but I’m afraid that the details of that will be the subject of another post, as I have work that I must do first! The EX images in the frame grabs were shot with this picture profile. As we all know the ergonomics of the video DSLR’s is pretty poor for video. It’s tricky to hold and you have to use an add on Loupe to make the LCD useable as a viewfinder. You can’t zoom mid shot and without peaking or zebras adjusting exposure and focus accurately is difficult. I was hoping to be able to use the 550D as a B camera for those situations where I need a small, discreet camera, but having seen the pictures, so far, for me it will be reserved for holidays and shooting where you not supposed to video and for shoots where supper shallow DoF is essential. I have to say I’m really disappointed, I wanted this camera to be so much better, I knew it would suffer from aliasing, but I wasn’t expecting the soft pictures, I guess some will say that the softness adds to the filmic look, but I’d much rather do that with some nice pro-mists or filtration in post production rather than starting out with soft pictures. Perhaps I’ve done something wrong? If I have please add a comment!
UPDATE: I was so convinced that I must be doing something wrong that I shot some more clips, this time with less harsh lighting. No, change however, the T2i is still soft and the new clips show just how big a problem aliasing is. You have to consider that the coloured moire patterns are recorded like that, no amount of grading will get rid of it. A small amount of diffusion on the camera should help, but then your going to have to work out how much to soften and diffuse each shot to make sure your not making the pictures even softer than they already are.
The frame grabs are all 1:1 pixel for pixel, no trickery has been used! You can download some further examples by clicking here. Even if you were shooting stuff for the web this level of aliasing could cause big problems as it’s really obvious. For this shot I had the Canons sharpness setting turned all the way down. I have also turned down the contrast setting as this gives better dynamic range with less crushed blacks. My workflow is to import the H264 files from the camera and then convert them to ProResHQ. This helps a little with sharpness over working with the native H264, but for me this last test was the nail in the coffin for DSLR’s as footage like this would simply be unusable. If you watch the YouTube clip please make sure you watch it full screen or at least at the 480P setting. The small embedded size doesn’t show the aliasing as much as the bigger versions.
OK, so it’s defiantly not just me doing something wrong. When in focus the T2i/550D aliases (as do all the current Canon DSLR’s). This is a grab from Philip Blooms latest Canon short. For once this is a daylight piece and as I expected it exhibits a lot of aliasing. The grab is actually taken from the thumbnail on his exposure room page. I’m really pleased to see this as it shows that aliasing is a problem for the experts too. You start to appreciate why so many of the Canon shorts are shot at night, with millimeter deep DoF… it’s to stay clear of having stuff in focus that will alias. there are filters from Caprock that are supposed to help, but you need a different filter for each focal length and aperture that you use, they also soften the picture somewhat.
If you want my opinion, then it has to be that the Canon’s are close, but still a mile away. The aliasing issue is a biggie. Sort it out and the skew, jello and overheating can be worked around, but if you have to worry about simply having a piece of wood in focus and whether it’s going to exhibit rainbows of colour or whether cobble stones will twitter and change colour (At 00.35 and this is from Canon) then it will limit what you can do. There is quite a lot of aliasing in Phil’s new daytime clip, basically anytime anything is steady, has texture and is in focus, it aliases. I’ve been shot down in flames on other forums for saying that this is a problem, but if even the experts can’t deal with it then what hope does everyone else have? I would love to have the option of shooting with the shallow DoF that the Canon’s offer, but not at the expense of having to avoid any kind of texture. Perhaps Red and Scarlet will be better, perhaps Canon will sort it out, or perhaps not, as the cameras are clearly selling like hot cakes, even with the issues. If they do fix it then the camera will almost certainly be for video only.
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