The DC motor is Canon's classic non-USM focus drive. It isn't anything new. It predates USM, STM, etc...
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Canon RF 75-300mm f/4-5.6 Coming Shortly
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Canon usually didn’t refer to Micro Motor as DC Motor. But they are the same thing. This was also the 3rd AF motor they used in the EF Mount. They could’ve used the original EOS AF motor. The original EOS AF motor was Arc Form Drive “AFD”. But these lenses had a lot of limitations. The AF and aperture work differently. These lenses sequentially AF & stop down to the selected aperture. They cannot carry out both actions at the same time. Also these lenses had a max frame rate of 3-4 fps. Canon replaced this AF motor in 1992. Micro Motor solved a lot of the issues AFD had.
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Yes it’s what Canon called Micro Motor. Before Micro Motor. Canon had Arc Form Drive which is the original EOS AF motor. That motor was used between 1987-1991. Before Micro Motor replaced it. Arc Form Drive had a lot of restrictions. The communication speed is very slow. Also the max fps is 3-4 fps. This is because the AF and aperture control happen sequentially. Instead of at the same time. Also the first USM lens was released in 1987. That lens was the EF 300mm F/2.8L USM lens. But this lens has a twist it has an electronic focus ring like STM lenses. All early Ring Type USM lenses used an electronic focus ring. The electronic focus ring doesn’t work with the camera set to Servo AF it’s ignored.
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You forgot HDW, Canon’s proprietary hamster-driven wheel focus motor. I think that actually might be the one used in this ancient lens.
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I rather take f7.1 with decent AF motor & IS than f5.6 with 90s~00s technology.
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Somehow on marketing strategy, I can understand the will to make it a RF lens to make it a pack lens for entry level cameras like the EF one was on entry level DSLR...
But having actually used one when I did buy my first DSLR, it's disappointing for future beginners to see that they will still be "stuck" with poor quality that they probably won't detect before buying.
And as previously mentioned, the EF one is very common on the used market and usually sells for a third of the announced retail price of the RF version.
Well it is true that the MSRP of the EF lens was about the same, usually presented in "discounted price" by a third and probably rarely sold alone but out in bulk for starter packs.
That must be the Sustainability Goals for Canon to recycle a lens design that old, hurray, the planet is saved !
But having actually used one when I did buy my first DSLR, it's disappointing for future beginners to see that they will still be "stuck" with poor quality that they probably won't detect before buying.
And as previously mentioned, the EF one is very common on the used market and usually sells for a third of the announced retail price of the RF version.
Well it is true that the MSRP of the EF lens was about the same, usually presented in "discounted price" by a third and probably rarely sold alone but out in bulk for starter packs.
That must be the Sustainability Goals for Canon to recycle a lens design that old, hurray, the planet is saved !
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It must be garbage - its price in the UK is £289, close to the actual exchange rate. If it was desirable it would have the usual price gouge.
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I have forgotten I've actually bought one of those EF lenses (second hand)... but it was never mounted on a camera of mine 
I used it as the lens for a spot light modifier for my studio flashes (those modifiers that take gobos)
I used it as the lens for a spot light modifier for my studio flashes (those modifiers that take gobos)
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Then you remembered we are talking about Canon.
But it makes perfect sense, the EF 75-300 was sold as part of cheapest two lens DSLR kits in big box stores for years. Canon is making a concerted push to own the entry level segment, while simultaneously pushing that segment upmarket (more expensive crop mirrorless bodies, but less expensive…one might almost say affordable…full frame mirrorless bodies).
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If you're talking about Arc Form Drive that was discontinued from new lens designs in 1991. But if you're talking about Micro Motor that was retired in 2011 and replaced by STM in 2012. Note existing lenses with older AF motors would continue to be sold. One example is the EF 50mm F/2.5 Compact Macro it was sold until 2018 before being discontinued. That was the last Arc Form Drive lens to be manufactured by Canon. Another example is the EF 50mm F/1.4 USM which was in production until recently. That lens used Micro USM with an additional clutch system for Full Time Manual Focus. That was the only Micro USM lens to use this system. Its very easy to identify these old lenses and determine the AF motor type. Arc Form Drive lenses always have a focus distance scale and the focus ring never turns when the AF motor is active. The focus ring will turn with the lens set to AF but not engage the lens elements. Micro Motor lenses spin the focus ring when the AF motor is active and lack a focus distance scale. Micro USM lenses also spin the focus ring when the AF motor is active and they lack a focus distance scale too. The focus ring will be hard to turn when the lens is set to AF also the lens will say USM. Note the EF 50mm F/1.4 USM lens uses Micro USM. But uses an additional clutch override system for Full Time Manual Focus and has a focus distance scale. That was the only Micro USM to support Full Time Manual Focus.
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I got mine in a refurbished two lens SL1 kit on sale. the SL1 still sees action... nobody thinks the 75-300 is worth carrying, Lack of IS is the biggest problem.
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No, I was talking about the hamster-driven wheel (HDW) focus motor. Sadly, you seem unaware of that critically important and innovative development by Canon. Your implication is that HDW motors were used only in cheap lenses, but that’s wrong. They were used in select L-series lenses as well.
I suspect they were phased out because of the difficulty when HDW lenses were sent in for service of noisy focusing issues. Here’s an image from the Canon Technical Repair Manual for the 70-200L, demonstrating the proper way to lure the hamster out of the lens so hamster-safe lubricant could be applied to the wheel.
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No wonder that there was no leak/rumour in advance!
The big question is whether the super cheap lens will encourage beginners to upgrade or leave the whole system on the shelf with a poor impression of MILCs.
Without IS, it is unlikely to get a good keeper rate at 300mm though
The big question is whether the super cheap lens will encourage beginners to upgrade or leave the whole system on the shelf with a poor impression of MILCs.
Without IS, it is unlikely to get a good keeper rate at 300mm though
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I'd never thought they would really do something like this...
I know that there is a market for this, but was it really necessary to take the worst EF lens and just port it to the RF mount without any changes? I bet you can't get one decently sharp image on the R7 with it's 32.5MP.
Thats a new low point for Canon.
I know that there is a market for this, but was it really necessary to take the worst EF lens and just port it to the RF mount without any changes? I bet you can't get one decently sharp image on the R7 with it's 32.5MP.
Thats a new low point for Canon.
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