coconatz
can one mount a canon EF lens originally designed for film cameras on canon DSLR? would certain functions not work (like autofocus) if one were to use them on a DSLR? or would they work normally when mounted on a DSLR? thank you!
Answer
Virtually all of the EF line will work on any of the new digital bodies. In almost all cases, metering and autofocus will work.<1>
Having said that, if you purchase one of the high end models (EOS-1Ds, 5D), the sensor size is the same size as a traditional 35mm frame, and so everything will work just as it ought.
If you purchase a lower cost model, e.g. 30D, Digital Rebel, etc, you'll find that they use a smaller APS-C sized (25.1 x 16.7 mm) sensor which effectively crops the photo by a factor of 1.6. <1> There is some benefit to this: as you're taking the prime, center part of the lens' image, chromatic and geometric abberations, as well as vignetting of your traditional lenses will be mitigated. On the other hand, if you have zoom lenses, this will tend to reduce their usefulness, say, a 24-80mm becomes, effectively, a 39-128mm lens -- negating the wide end. Canon does make a line of lenses designed for their APS-C based cameras, the EF-S line, and when reading those lens specs, the numbers hold true: 50mm means 50mm.<2>
As an aside: the smaller, APS-C sensors also tend to have a greater pixel density, which like smaller grains on film, require more light to activate: the native light sensitivity will be lower and thus noise will be higher when they are pushed to higher sensitivities (ISO 1600+).<3>
A very active point of contention is whether or not Canon will, as it achieves economies of scale, bring the larger, 35mm sensor to its entire product line: This would probably lead to the discontinuation of the EF-S line. The working consensus at this time is that due to the inherently costly nature of producing these chips, it will not be possible, in the foreseeable future to sell "full frame" digital cameras, competitively, at prices cheaper than the 5D.
A fantastic site for lens reviews, exhaustive: http://www.photozone.de/8Reviews/index.html
An authoritative digital camera body review site:
http://dpreview.com/
Virtually all of the EF line will work on any of the new digital bodies. In almost all cases, metering and autofocus will work.<1>
Having said that, if you purchase one of the high end models (EOS-1Ds, 5D), the sensor size is the same size as a traditional 35mm frame, and so everything will work just as it ought.
If you purchase a lower cost model, e.g. 30D, Digital Rebel, etc, you'll find that they use a smaller APS-C sized (25.1 x 16.7 mm) sensor which effectively crops the photo by a factor of 1.6. <1> There is some benefit to this: as you're taking the prime, center part of the lens' image, chromatic and geometric abberations, as well as vignetting of your traditional lenses will be mitigated. On the other hand, if you have zoom lenses, this will tend to reduce their usefulness, say, a 24-80mm becomes, effectively, a 39-128mm lens -- negating the wide end. Canon does make a line of lenses designed for their APS-C based cameras, the EF-S line, and when reading those lens specs, the numbers hold true: 50mm means 50mm.<2>
As an aside: the smaller, APS-C sensors also tend to have a greater pixel density, which like smaller grains on film, require more light to activate: the native light sensitivity will be lower and thus noise will be higher when they are pushed to higher sensitivities (ISO 1600+).<3>
A very active point of contention is whether or not Canon will, as it achieves economies of scale, bring the larger, 35mm sensor to its entire product line: This would probably lead to the discontinuation of the EF-S line. The working consensus at this time is that due to the inherently costly nature of producing these chips, it will not be possible, in the foreseeable future to sell "full frame" digital cameras, competitively, at prices cheaper than the 5D.
A fantastic site for lens reviews, exhaustive: http://www.photozone.de/8Reviews/index.html
An authoritative digital camera body review site:
http://dpreview.com/
What is the best canon lens for filming documentaries?
iya.george
I'm looking for a really sharp, fast lens that works well in low light conditions. It can't create a really shallow depth of field however as it would be too hard, the slightest movement would put it all out of focus so this rules out 85mm 1.2 :( however, I'd like a similar lens like that (possibly at half the price too) but that does all of the above! Also, do you recommend any other lenses in particular for filming documentaries (and general filming as I often make trailers etc) thanks!
Answer
Well for film I really can't say. Film lenses are quite expensive. Do you already own a 16mm or a
35mm film camera? If so I'd check with the camera's maker for available lenses.
There are several good rental agencies around that'll rent specialized lenses - cost? I don't know.
If you don't own a 16mm or 35mm camera these rental agencies can help you with that as well.
Not only the cost of the rental equipment but have you considered the film processing cost? For
35mm it can be extremely expensive. How about lighting? What about sets? What about a script?
Another thing to consider... especially using film, always rehears your scenes several times prior to rolling your film because of the cost. The movie companies, always trying to save a buck here and there, make the actors rehearse their scenes over and over before shooting.
If what you write towards the end of your question is true, about making "trailers", then you should already have the knowledge you need regarding film shooting... but hey, if you don't you can always learn by checking the web or doing research with various film companies in your area.
Well for film I really can't say. Film lenses are quite expensive. Do you already own a 16mm or a
35mm film camera? If so I'd check with the camera's maker for available lenses.
There are several good rental agencies around that'll rent specialized lenses - cost? I don't know.
If you don't own a 16mm or 35mm camera these rental agencies can help you with that as well.
Not only the cost of the rental equipment but have you considered the film processing cost? For
35mm it can be extremely expensive. How about lighting? What about sets? What about a script?
Another thing to consider... especially using film, always rehears your scenes several times prior to rolling your film because of the cost. The movie companies, always trying to save a buck here and there, make the actors rehearse their scenes over and over before shooting.
If what you write towards the end of your question is true, about making "trailers", then you should already have the knowledge you need regarding film shooting... but hey, if you don't you can always learn by checking the web or doing research with various film companies in your area.
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