How does a dead fly in a Canon EF 70-200mm f/2.8L IS II affect image quality?

[scyrene]

Funnily enough a few months ago, I discovered a small moth inside my 24-105L lens. How and why it got in there I don't know, but its body was loose inside and clearly visible. The lens was old and I wasn't going to sell it, so I decided to open it up to remove the moth and clean it. But first I took some shots to see what effect it had, and I couldn't detect much, and decided that I was likely to make the lens worse by fiddling with it, so I didn't bother. I've been using it ever since and can't say the images are any worse than before.

 

[londonxt]

I remember a small fly got inside my 5D mirror chamber and walked across the focussing screen as I was framing a photo over a city view, very B-movie-esque but nearly had a heart attack.

 

[Hector1970]

I changed my lens one time on my 5D III and placed the camera face down on a piece of furniture. When I got the new lens on when I looked through the viewfinder I could see a little insect walking around. It appeared for a few days and I couldn't get rid of it. Eventually it died and it remained in the view finder for a while until I managed to shake it out.

 

[SkynetTX]

So the IS in the name of the lenses should now mean "Insect sealed."

 

[Kit Lens Jockey]

Had a tiny spider in the viewfinder when I had my 1D4 - ruined loads of images! It was just too much fun watching the antics of this tiny fella so I missed lots of birdies

I often wonder what happened to him/her - was it the Sensor Cleaning Monster

Um yeah if using my camera required me to have a tiny spider that close to my eye every time I looked through the viewfinder that camera would be sold very quickly.

 

[Deleted member 91053]

Um yeah if using my camera required me to have a tiny spider that close to my eye every time I looked through the viewfinder that camera would be sold very quickly.

Why? That tiny spider gave so much entertainment when waiting for subjects to show! We all know how boring wildlife photography can be at times.

Agoraphobic? It was a VERY small spidey............

 

[ignomini]

Of course it does, just not measurably so. But by the time we're using half-gigapixel sensors then we'll have to reassess.

I do hate the 'generalisation' of language. When I see a lens listing that says 'mark on objective has no effect on image', I know they're lying and I move to the next listing. Everything in a lens has an effect on image quality. Just because we can't see it right now doesn't make it acceptable to lie.

No, they are not automatically lying. I have an old Kodak lens on a medium format camera. The lens has bubbles in it. I defy anyone to find evidence in the photos it has taken. You can even use a microscope. Short FL lenses are a different story, but this post is about a longer lens..

 

[stevelee]

Agoraphobic? It was a VERY small spidey............

"arachnophobic" perhaps

(And taking the Latin and Greek literally, someone with agoraphobia would come to a forum with fear and trembling, so probably not posting here.)