Meike announced a 50mm f/1.7 manual focus lens for Canon EOS R and Nikon Z systems.
The Meike 50mm f/1.7 has a minimum focusing distance of 0.5m and is comprised of 6 elements in 5 groups.
Meike lenses are sold on Amazon.
Not sure if you should try this at home though it worked for Mathieu Stern as you can see in the video below.
What is it about? Instead of using a lens cleaning pen, you can do the same job with a candle, a spoon and a microfibre cleaning cloth. The tip of a lens cleaning pen is covered by “carbon cleaning compound”, which basically is soot. Soot sticks to oils and fats and hence works perfectly with those fingerprints on your precious lens. What is shown in the video is how to make your own “carbon cleaning compound”.
Watch the short video below carefully before trying it. Be aware that soot is a gentle abrasive, but still an abrasive. Using this trick too often might damage the lens over time (though it seems to work fine for Mathieu Stern).
[via DIY Photography]
Canon EF 40mm F/2.8 STM at a glance:
The Canon EF 40mm F/2.8 STM lens got a significant price drop and now sell at $129. That’s $70 off. Just follow the links below.
[shoplist 5686]
Hi Lows Note spotted a rather interesting Canon patent application (2017-108266).
The patent literature describes a 90mm f/2.8L IS macro lens for the Canon EOS R system. Two optical formulas are discussed in the patent literature.
Specification and lens arrangement of embodiment 1
Specification and lens arrangement of embodiment 3
Well, this is a patent application for a lens that may indeed hit the market (most patent applications never become a real product).
More Canon patent applications are listed here. Some particularly interesting patent applications we think might get into production in the next few years are these:
Hi Lows Note spotted a Canon patent application (2018-197774) for an RF 28-70mm F/2-2.8 lens for the EOS R system.
The interesting fact: the lens literature does not refer to an image stabilisation group inside the lens. Some people is saying this is a sign for IBIS (In Body Image Stabilisation) coming to future EOS R models (rumors already surfaced). We are not sure how to interpret this.
Canon always stated the superiority of image stabilisation in the lens. Never the less, Canon execs didn’t exclude the possibility of a future mirrorless camera with IBIS, and there are a few patents clearly discussing IBIS (patent 1 | 2 | 3).
Canon in an unusual move for the company already disclosed the the EOS R lens roadmap for the next years (also see this interview). The lens described in the patent application doesn’t seem to be on Canon’s immediate agenda. Keep in mind that patents are a way for companies to secure they research and development and hence their intellectual propriety. A patent application rarely means a product is coming to the market soon.
More Canon patent applications are listed here. Some particularly interesting patent applications we think might get into production in the next few years are these:
Roger Cicala and Aaron Closz of Lens Rentals disassembled the Canon EF 400mm f/2.8L IS III lens, a lens that costs like a used car.
From their conclusion:
The spring-loaded adjustable collar collection is something of a mystery to us and will remain so until we can spend some days doing optical adjustments on one. The use of the same motor as the RF lens is very interesting in several ways. Only some more tear downs will tell us if this is just a superior motor type that Canon is going to use in all electrically focused lenses (I suspect this is probably the case), or just in lenses with a lot of glass in the focusing element (another likely thing).
Canon has really been very quiet about this lens, despite the known changes inside. I had a lot of trouble finding out which elements are fluorite (two of them are, apparently). There has been some talk about improved focusing speed and accuracy, which I assume has something to do with the new electronic focus system, but not much.
The teardown is explained step by step with a lot of pictures, see it here.
All images © lensrentals.com and used with permission.
Canon EF 400mm f/2.8L IS III at a glance:
Canon EF 400mm f/2.8L IS III: [shopcountry 53893]
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