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10 votes

Why aren't lens/body caps transparent?

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 ...
Olin Lathrop's user avatar
  • 17.4k
10 votes
Accepted

What can I do about a lens cap which keeps falling off?

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 ...
xiota's user avatar
  • 27k
8 votes

What can I do about a lens cap which keeps falling off?

Just to add another suggestion... There are also those "cap keeper" doodads, which solve a problem for some:
osullic's user avatar
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7 votes
Accepted

Are lens caps compatible between Nikon/Canon?

For the vast majority of lenses, i.e. almost all lenses, a general lens cap would fit, as long as long as it had the right diameter. There are a few exceptions, e.g. ultra wide angle lenses that have ...
Pete's user avatar
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6 votes
Accepted

Should lenses be stored without their caps inside a dry cabinet?

Light is only beneficial for inhibiting the growth of fungi if it contains ultraviolet (UV) wavelengths. The primary source of UV light among common light sources encountered most places is sunlight. ...
Michael C's user avatar
  • 175k
6 votes

Are lens caps compatible between Nikon/Canon?

If the lens caps weren't compatible, filters also wouldn't be compatible. So yes, the thread specs are the same between lens manufacturers. Only the diameter of the filter mount / lens cap varies.
Warren Young's user avatar
  • 5,224
6 votes

What can I do about a lens cap which keeps falling off?

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 ...
Michael C's user avatar
  • 175k
5 votes

Why aren't lens/body caps transparent?

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 ...
Blrfl's user avatar
  • 5,582
5 votes

Why aren't lens/body caps transparent?

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, ...
Michael C's user avatar
  • 175k
4 votes

How can I tell if this "2 in 1" lens hood and cap will be effective on my lens?

... 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 ...
xiota's user avatar
  • 27k
4 votes

Where can you buy replacement lens caps for a Canon DSLR?

You should be able to get a lens cap from any local camera store, or easily buy one online. For the majority of lenses, the only thing you need to know is the diameter in millimeters of the filter ...
Pete's user avatar
  • 3,302
4 votes

How to prevent lens cap from being put on backwards?

Is there any type of lens cap that will stop itself short of destroying the lens if you accidentally put it on backwards... ? Although some old caps are made of metal and may damage the glass or ...
xiota's user avatar
  • 27k
3 votes

Should lenses be stored without their caps inside a dry cabinet?

Although it's a good idea, it's not necessary per se. Some climates are more favourable for fungi that will nest in lenses. Especially in very humid climates it would be beneficial to control the air ...
timvrhn's user avatar
  • 2,702
3 votes

How to prevent lens cap from being put on backwards?

Most lens caps are plastic, front lenses usually are glass. It seems a bit strange that this combination should be able to cause scratches, or at most to the coatings. What information are we ...
user88681's user avatar
3 votes

LCD screen of Canon showing black in auto mode

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, ...
Michael C's user avatar
  • 175k
2 votes

Why aren't lens/body caps transparent?

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 ...
Emil's user avatar
  • 464
2 votes

Why aren't lens/body caps transparent?

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 ...
Caleb's user avatar
  • 31.7k
2 votes

Why aren't lens/body caps transparent?

Lens caps aren't transparent because it would look terrible.
dpollitt's user avatar
  • 46.6k
2 votes

How can I tell if this "2 in 1" lens hood and cap will be effective on my lens?

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 ...
OnBreak.'s user avatar
  • 20.5k
2 votes
Accepted

Does the EF - EOS R adapter have a protecting cap on both ends?

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 ...
Michael C's user avatar
  • 175k
2 votes

Does the EF - EOS R adapter have a protecting cap on both ends?

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 ...
juhist's user avatar
  • 6,825
2 votes

How to prevent lens cap from being put on backwards?

This doesn't directly answer the question you're asking, but at a more fundamental level, scratches on the front element usually aren't a big deal. Minor scratches probably don't have a visible effect ...
scottbb's user avatar
  • 32.9k
1 vote

Should lenses be stored without their caps inside a dry cabinet?

I store lenses I am not regularly using in the fridge, sealed in plastic bags that contain a desiccant. I've no proof this helps but for sure, fungus will grow slower at lower temperatures. I live in ...
Van Eden's user avatar
1 vote

How to prevent lens cap from being put on backwards?

AFAIK there are only two types of caps: The "outer pinch" one: which is often the one that comes with the lens, and the "inner pinch" one: that has the nice property of being usable even with a ...
xenoid's user avatar
  • 21.5k
1 vote

How can I tell if this "2 in 1" lens hood and cap will be effective on my lens?

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,...
cmason's user avatar
  • 14.8k

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