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15

Every lens I have ever bought had front and back caps with it. If you go to the manufacturer's website for the particular lens you are looking to buy, there is usually a "What's in the box" link, or a section in the specifications that lists the new-in-box package contents. Some manufacturers don't seem to list that information on their sites (for instance, ...


10

Lens caps are for use on lenses that are in storage. They are not meant to be used on lenses that are in use, such as when attached to a camera. As you have experienced, they are not particularly resilient, they are easily detached in the field, and they are easily misplaced. In the environments you describe, city and museum walks, obsessive use of lens ...


10

No! You want opaque lens caps because: Keep light out of the camera when not using it. In film cameras, the sensor is effectively always on. The shutter should in theory block all light, but stuff happens. With digital sensors, light hitting the sensor when not exposing doesn't corrupt the next picture, but you still want light not entering the lens ...


9

I highly recommend detaching it from the camera and storing it in a bag or a pocket while you are using your camera. It swings around too much and it gets in the way a lot. Having the take the cap off and put it back on also slows you down. So, once you have taken it off, only put it back on the camera when you are 100% sure you won't be needing your ...


8

When buying new, yes. When buying used, usually, but double check. It's uncommon for a lens to be sold without any caps at all, but not rare for the original ones to be substituted for generic replacements. These are usually (but not always) inferior. That doesn't affect your results, of course, but sometimes off-brand rear caps don't fit tightly and might ...


8

Just to add another suggestion... There are also those "cap keeper" doodads, which solve a problem for some:


6

This will cost you a bit more up front, but could save you some in the long run. Out of appreciation to the owner for letting you use their camera, buy a new Nikon 52mm lens cap to replace the one you have worn out.¹ Place that cap on the lens whenever you are returning the camera to its owner. Buy a few cheap generic 52mm lens caps. They can be had for ...


5

Lens caps are opaque to keep light out of the camera. This is something you really want when there's light-sensitive film in it rather than a digital sensor. Most shutters work well, but a tiny leak will result in fogging if light's allowed in over the long term. I'm not sure the fungus angle is valid or not since there are other things that would grow ...


5

Interestingly enough, optics made for hunting rifles often come with transparent lens caps for both the front and rear lenses. This allows the scope to be used, albeit with less optical precision, without taking the time necessary to flip up or remove the covers if game unexpectedly presents itself. The main reason lens and body caps are still black plastic ...


4

... my spouse has a (bad) habit of putting her keys next to my lenses and my three year old picked up a new hobby recently. Collecting rocks. Some options to consider: Use step up rings so that you can use the same lens caps with all your lenses. This would prevent you from having any unattached caps to lose. Use neoprene pouches. While they are ...


4

Until you find a proper one, I would simply fashion one out of some cardboard and gaffer tape. Or if you happen to find some plastic drain pipe of the correct diameter, you could use that.


4

In general hoods are not interchangeable, the mounting mechanism is more complex than a screw thread. There are probably examples of hoods that can be shared but this is the exception rather than the rule. You can buy generic rubber hoods which are designed to fit on most lenses. The same is true of tripod collars, unless you're lucky. There is a large ...


3

There is a different type of lens cap called "push on". This is possibility, but the one that came with my B&W polarizer doesn't work too well.


3

If your camera has a shoulder strap or a neck strap, another way would be attaching the cap to the strap using a cap holder (see this link to get an idea of what I am talking, but you might want to look for something that fits your cap) - or making a DIY of something similar. If your camera doesn't have a wide strap, you might find something similar for a ...


2

A standard plastic lens cover or cap is simply used to protect against scratches, impact, or in the field weather conditions. It is not for any type of seal. For strictly standard plastic lens covers I would say that leaving them on or off is not going to alter the storage potential. This question could be a bit different if you are talking about metal lens ...


2

On cameras with detachable lens cap, I make a discipline of taking it off and immediately putting it in my pocket. When I don't do this, eventually I get disctracted and end up losing the lens cap. One thing to consider is which way you put it in your pocket. I put it so that the inside of the cap faces outward. There is a range of weather conditions and ...


2

Put it in your pocket - make an habit out of it, when you take the lens cap off you immediately put it in your right pocket (or whatever pocket is more convenient for you, obviously) that way it doesn't get in the way and you always know where it is. And if you lose the lens cap you can get a new one on eBay from China for less than $2 (including shipping) ...


2

it would make sense for front/rear lens caps and body caps to be made transparent. I think the main reason is probably that clear plastics like ABS tend to crack and turn yellow with exposure to UV light, whereas black versions are UV resistant. Experience seems to bear this out: I have some lenses from the early 70's that have original caps, and they're ...


2

Lens caps aren't transparent because it would look terrible.


2

You could buy a replacement from UK Digital or Samyang (these seem to be the same product for the same price). If ordering from the UK isn't convenient, you could find someone with a 3D printer and print one of these:


2

Spring-loaded lens caps are designed to grip the filter threads on the lens (or a filter if you have one attached) from the inside. As such, the cap size you need will be the same as the filter diameter. (Note that the filter diameter has nothing to do with the focal length(s) of the lens, which is also measured in millimeters.) Some lenses have a ...


2

Whether an image is automatically displayed or not following capture can be turned on or off using the menu on all digital Canon EOS cameras. If you have selected a setting that displays the image, you can also select from several options that determine for how long the review image is displayed. You may have turned it off without realizing what you were ...


2

At the time when I got fungus on my lenses and camera sensor, I was actively using all of them in bright sunny environments. The humidity in the region was heavy, and so was the fungus growth. The suggestion that you need sunlight into the lens is just a hearsay. It just something people heard somewhere and they repeat it. Scientifically, fungus is ...


2

It's easy to see what comes with the Mount Adapter EF-EOS R at Canon USA's product listing. Just scroll down and click on the "What's included" tab to see the following list: The listings for the Control Ring Mount Adapter EF-EOS R, Drop-in Filter Mount Adapter EF-EOS R with Drop-in Circular Polarizing Filter A, and Drop-in Filter Mount Adapter EF-EOS R ...


2

This seems like one of those things designed by an overzealous inventor who just got into photography but hasn't been around long enough to learn: Lens caps make decent coasters. But really, mine sit on the lens when the lens is shelved and are removed prior to a gig. As xiota said, shots with lens caps on are unacceptable. The front element of your lens ...


1

I would worry that the above solution would interfere with the lens, and of course you would need one for each lens you own, increasing costs even more. While I simply pocket my lens cover these days, previously I used a simple lanyard-type tether: If you are not familiar with this: the little disc has sticky tape that sticks to the lens cap, and the ...


1

The answer is: caps do not need to be purchased separately, because the adapter comes with a cap attached to both ends in the sales package. Retailer pictures for some reason often don't show the caps (probably to show the internal parts of the adapter, or to avoid showing the true size of the adapter with caps attached). Do remember that if using the EF - ...


1

The damage does look like it was done by the spring-loaded part of the cap. One possibility is that Canon's lenses and filters have a minimum thread depth that isn't being met by the filter. This can be true if the filter is a slim type intended for use with wide-angle lenses. If there's a gap between the rim of the filter and the lens-facing surface of ...


1

If you don't mind staining your camera with adhesive, you an adhere a small piece of velcro to the cap and to the bottom of the camera (for example) so you can stick it while recording. Another option that will save your camera is to get a bolt that fits the tripod mount thread and use it to attach a thin piece of plastic, metal or wood and stick the velcro ...


1

There are third party hoods available. Generally, these screw onto the filter thread of the lens, making them mountable on any lens with that filter size. Whether or not the hood will vignette depends on the angle of view of the lens. Usually, I use the manufacturer's hood, but there are exceptions. For example, I use a Pentax domed hood on my Fuji X100. ...


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