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I’ve had no experience using it on a RED Epic or Dragon.
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But it won’t cover a full frame camera like the 5D. That has us covered for the Super 35mm and most cameras currently on the market. The lens is 4k compatible and as mentioned previously covers an image circle of 31.7mm. An 11-blade iris reduces highlight artefacts and helps produce beautiful round out-of-focus bokeh. The lens has an 11-blade iris and this has become standard across Canon’s cinema lens line. I would imagine that this will come at the cost of the inbuilt electronic interface but fingers crossed. It will be interesting to see if Duclos lenses develop a user changeable “multi mount” like they do for the Canon 15.5-47 and 30-105. Clearly it’s not something you’ll be doing all the time, but it’s handy for protecting your investment if and when you change camera systems. This is because there are a bunch of electronics built into either mount, but more on that later. The mount is exchangeable between the two but only by a Canon service centre and at a cost. The lens is available in either PL or EF mount Canon has obviously drawn on its years of experience building ENG/EFP B4 lenses and cinema zooms to build this hybrid lens just for us. Since the DSLR revolution, many like myself have changed over to Super 35mm sensor cameras like the C300, F5/55 and Amira, but without a viable zoom lens option. For years, Canon B4 mount lenses like those mentioned earlier were the staple of broadcast crews. It’s the servo that I think points to the true target market for this lens – the Broadcast sector. The “servo” refers to the fact that the lens includes a broadcast style servo for control of zoom, focus and iris. The “cine” in the name refers to the fact that it’s a “cinema” lens with a S35 covering image circle of 31.7mm. As the name suggests it has a class leading 7x zoom range. The Canon CN7x17KASS is a 17-120mm T2.95 “cine-servo” lens. Okay: enough about money, on to the lens itself. Lens technology has moved a lot slower than cameras, but I hope we continue to see the price/size/weight drop in the coming years. In the era where the latest camera tech is redundant in 18-24 months, an investment in glass is a much more long term proposition. I’m prepared to pay for that and I charge accordingly.
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I’m not saying that the cost of the CN7x17 is chicken feed, but I’m a professional, I make my living out of this equipment, I need professional equipment and my clients expect it. A standard DigiBeta or XDCAM Documentary kit would have included 2 lenses like the Canon HJ22x7.6 and Canon-HJ14x4 with a price tag of $37,000 US and $35,000 US respectively. Only a few years ago s35 cinema lenses with this focal range would have been hugely expensive (not to mention just plain huge!) In the broadcast world, where I’ve been working for the last 17 years, B4 mount 2/3inch lenses were the go-to lens. Its closest competitor in specs is the Fujinon Cabrio 19-90 T2.9 and that’s listed on B&H at USD $39,800. The way I see it, at $31,000 the Canon CN7x17 is actually a bargain. Stills lenses are fine in many circumstances but all have their limitations.
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A lot of people in the low to mid end of this business, including many people working in broadcast TV who have made the swap to shooting on S35 digital cameras, are making do with using photographic lenses. But the plummeting cost of cameras hasn’t necessarily been matched by the price of lenses. The DSLR revolution and subsequent flood of high quality affordable cameras has drastically reduced the cost of entry to this game. B&H list it at $31,350 US and that is a significant investment for any owner operator. Which brings me to the first point a lot of people complain this lens is too expensive. I bought it with my own money – a lot of my own money. I’m not on the pay roll of Canon, they haven’t given me this lens for free, they didn’t even loan it to me for this evaluation. This article is my thoughts on this lens from the point of view of a shooter who’s been working with this lens for the last month or so. If you want that detail, I’m sure it’s out there somewhere on the web. I’m not a lens expert I don’t shoot charts or count lines of resolution.
To call this a review of the Canon CN7x17KSA cine-servo zoom lens is probably not technically correct.
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