Dear Canon, back to the drawing board re Lens Caps.

I don't use lens caps for anything...other than selling/trading. Once the items is here, the cap gets thrown into a box and never is seen again. I just shove a B+W or Heliopan on the lens and call it a day. However, the only lens caps that I've EVER found good were the Hasselblad V Zeiss caps. I hate threaded filters and would really like to see everything as a bayonet!

I borrowed my wife’s finger nail beautifying paint. I have to complain about the RF TC. One end has a mark on the white body. It is on the inside edge on the other end. Duh

Reminds me of Apollo 13. The air scrubbers where round at one and square at the other.

I am just the kind of person these companies look for. While this is not needed I think it is very useful. I have several lenses that are about the same size and shape so having the focal length on both caps is very handy.

Has anyone used this brand before and can speak on the quality of the cap?

https://www.lenzbuddy.​com/Custom-Lens-Caps

And yes, I may just use a white paint pen and label what I already have.

chuckmiller wrote in post #19186080
I am just the kind of person these companies look for. While this is not needed I think it is very useful. I have several lenses that are about the same size and shape so having the focal length on both caps is very handy.

Has anyone used this brand before and can speak on the quality of the cap?

https://www.lenzbuddy.​com/Custom-Lens-Caps

And yes, I may just use a white paint pen and label what I already have.

I saw a person with those before. They screamed "gimmicky gear head over here".

Since I don't use caps and the lenses sit in bag/case face up, I can just look into the Pelican and see what lenses are there (or not). If I was to do something like those for a cap, I'd rather use an old Dremel engraver bit or laser engraver and fill the engraved spots with glow-in-the-dark white craft paint. Then they'd be useful at night or in a dark location!

Just went mirrorless and hate the RF rear lens caps. What were they thinking? So I made it a tad easier to align using 1/8th inch red pinstriping tape and a minute a lens.

rebop wrote in post #19484590
Just went mirrorless and hate the RF rear lens caps. What were they thinking? So I made it a tad easier to align using 1/8th inch red pinstriping tape and a minute a lens.

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Since I do not have a mirrorless body I do not understand what the problem is.......

Inspeqtor wrote in post #19484724
Since I do not have a mirrorless body I do not understand what the problem is.......

RF caps only attach in one orientation, making it very difficult to cap a lens in the dark on blindly in a bag.

mike_d wrote in post #19484741
RF caps only attach in one orientation, making it very difficult to cap a lens in the dark on blindly in a bag.

Thank you very much!

You have to keep spinning the rear cap around in the dark, or while the lens sits in a bag as you change lenses, onto the end of the lens until it “catches”, grrrr

Capn Jack wrote in post #19172809
Somehow, the pinch caps I use have a tendency to fall off. I think it is because of the tabs that allow a user to remove the cap by pushing on the tabs on the edge, as well as center pinch. I think if the tab on the edge gets pushed, the cap come off too. If someone could come up with a "safety" that fills the gaps which allow the pinch mechanism to move, that would keep the caps on while the camera is stowed in a camera bag that is being moved

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Interesting...with the EF mount lenses, I purchased aftermarket center-pinch caps for all my lenses, as I preferred center pinch over edge pinch caps, having Tamron (center pinch) and Canon lenses to compare directly. In hearing the complaints about Canon center pinch, I decided I should compare aftermarket center-pinch vs. Canon edge-pinch caps. Side-by-side of Canon (left) and aftermarket (right). Note that the aftermarket caps have a very broad outer edge that might cause it to release inadvertantly. Yet I have never had a complaint about the aftermarket caps being more prone to coming off the lens, due to the wide outer diameter rim protrustion.

My original Canon caps always come off. Anything that hits the side invariably hits one of the release buttons and the cap is then free, so when I saw Canon center-pinch caps I was happy.

But those caps also have big, exposed side release buttons. They give you more ways to take them off but not more ways for them to stay on. To me, the optimal center-pinch cap has a smooth edge like these on Etsy. But they are $70.

Wilt wrote in post #19484973
Interesting...with the EF mount lenses, I purchased aftermarket center-pinch caps for all my lenses, as I preferred center pinch over edge pinch caps, having Tamron (center pinch) and Canon lenses to compare directly. In hearing the complaints about Canon center pinch, I decided I should compare aftermarket center-pinch vs. Canon edge-pinch caps. Side-by-side of Canon (left) and aftermarket (right). Note that the aftermarket caps have a very broad outer edge that might cause it to release inadvertantly. Yet I have never had a complaint about the aftermarket caps being more prone to coming off the lens, due to the wide outer diameter rim protrustion.

Interestingly, looking at the depth of the threads protruding into the lens from the rim of the cap, the Canon thread measures to about 3.5mm while the aftermarket thread measures to about 2.5mm. Yet I have also not had complaint about the aftermarket caps coming off because there was not as deep thread protrusion.

I have center pinch cap provided by Tamron, and I have not found any difference in use between the Tamron and the aftermarket center-pinch.


Perhaps someone could try to assess the thread depth dimension of the Canon RF cap, to compare to what I have shown on both Canon and aftermarket EF caps.

As to the alignment of the rear lens cap, I have always marked the Canon EF rear cap's indentation with a white dot or silver dot of paint to facilitate initial alignment with the lens mount dot, but when I just checked all my lenses (5 of them) and I was surprised to discover I had not bothered with alignment when putting the rear cap in place for any of them! So I can now better understand the annoyance of having to align the RF rear cap to the single orientation that works.

The thread depth isn't the issue for the front cap. Note @AntonLargiagiader's post below- if the outer release button at the rim of the cap is pressed, the lens comes off. The Etsy solution mentioned doesn't have protruding outer release buttons.

As for alignment of the read cap, that simply screws on and off. I just screw them down until snug and there is no need for alignment,

AntonLargiader wrote in post #19485832
My original Canon caps always come off. Anything that hits the side invariably hits one of the release buttons and the cap is then free, so when I saw Canon center-pinch caps I was happy.

But those caps also have big, exposed side release buttons. They give you more ways to take them off but not more ways for them to stay on. To me, the optimal center-pinch cap has a smooth edge like these on Etsy. But they are $70.

Tom Reichner wrote in post #19176033
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I just use the Sensei lens caps that screw in like a filter. . They never just fall off, no matter what. . And it is not a hassle or an inconvenience to screw them on or unscrew them off ..... just takes two or three seconds.

https://www.bhphotovid​eo.com …helGyKewBGw8aAt​XKEALw_wcB

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I do not use lens caps if a hood is on the lens. . For lenses that I use a hood with, like the 100-400mm v2, I just leave the hood on all the time. . There is no reason at all to ever remove the hood - especially with the collapsible rubber hoods that squash down so the lens fits into the bag easily. . And the hood offers all the protection I need for the front element. . There' no problem with tossing the 100-400mm into my camera bag or a backpack without any cap on it.

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I know this is old, but that’s what I do. Screw-on caps for transport, then just hoods in my bag. And I don’t use Canon hoods— I use cheap metal screw-ons, keeping the originals crisp (zei$$).

OK, but teles and superteles get really long with the hoods on. They won't fit in my bag that way.

AntonLargiader wrote in post #19486357
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OK, but teles and superteles get really long with the hoods on. They won't fit in my bag that way.
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That's why people use collapsible rubber hoods like this on their 100-400mm, 100-500mm, etc. zooms ...

https://www.bhphotovid​eo.com …m_3_in_1_rubber​_lens.html

I really hate the original Canon lens hoods made of rigid plastic or metal, so these cheap collapsible rubber jobs are perfect!

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