ggttc Loc: TN

Generally the rule of thumb about dust is “forget about it” unless it’s a severe. Keep in mind that even small scratches on a lens rarely “affect” the image. Go up to a dirty window get close to it and look thru it. Can you see the dirt?

ggttc Loc: TN

Generally the rule of thumb about dust is “forget about it” unless it’s a severe. Keep in mind that even small scratches on a lens rarely “affect” the image. Go up to a dirty window get close to it and look thru it. Can you see the dirt?

Bubbee Loc: Aventura, Florida

I'm shocked that anyone in this group would use this forum to insult someone's grammar! This is about Photography! We all make grammatical errors, as well as mistakes with punctuation, and vocabulary. So what! As long as the questions and answers are understood, nothing else matters.
I think we must be courteous and respectful to each other!

digit-up Loc: Flushing, Michigan

RJM

digit-up Loc: Flushing, Michigan

:RJM

digit-up Loc: Flushing, Michigan

: RJM

BlueMorel Loc: Southwest Michigan

Maybe the OP should repost so he doesn't have to read through all this kerfuffle?

digit-up Loc: Flushing, Michigan

A little kind-ness AND hospitality goes a long way...Anyway...There’s another “FEATHER” on my ignore list. Once someone goes that far to show their CRUDE-NESS, I add them to my ignore list, Good-bye mr. featherweight.!!RJM

burkphoto Loc: High Point, NC

The acceptable use of 'impact' as a verb is "relatively" recent, as in 3-4 generations ago.

When I was in school in the 1970s, it was sometimes forbidden. Older English teachers in my high school, and some older professors at Davidson, would knock off a full letter grade for that! That was common, despite the fact that a 1965 Webster's Seventh New Collegiate Dictionary listed the use of 'impact' as a transitive verb! My high school journalism teacher joked that they forbade using Impact as a verb, as an opportunity to teach us how to use AFFECT and EFFECT properly. She also predicted that the language and acceptable usage of it would become much more fluid in future years.

'Impact' was such a contentious word that at Davidson's 1973 Freshman orientation, we were handed a list of professors who didn't like it. The list included various professors' known grammatical hang-ups. It was courtesy of one of the fraternities. They had compiled it carefully over previous years.

davyboy Loc: Anoka Mn.

Can you repeat that in English please

burkphoto Loc: High Point, NC

The use of 'impact' to mean 'affect' is a generational response to stupid grammatical rules. Impact has been listed as a transitive verb in Webster's New Collegiate Dictionary for at least the last 55 years. Yet when I was in college, older professors would object.

Note the second meaning. This is from Apple's built-in MacOS dictionary:

IMPACT | imˈpakt | [no object]

1 come into forcible contact with another object: the shell impacted twenty yards away.
• [with object] chiefly North American come into forcible contact with: an asteroid impacted the earth some 60 million years ago.
• [with object] press firmly: the animals' feet do not impact and damage the soil as cows' hooves do.

2 (impact on) have a strong effect on someone or something: high interest rates have impacted on retail spending | [with object] : the move is not expected to impact the company's employees.

If you are to get the most from a forum like this one, cultivate habits of gracious acceptance and inclusion. Concentrate on ideas and actions, rather than dwelling on the occasional misspelling or mis-usage. Avoid calling out someone publicly. Dinging someone for a typo or a misspelling or mis-usage is a bit petty, unless you're an editor, professor, English teacher, or a parent correcting a kid, all in private. THEN, it's highly advisable. Good language usage is still desirable.

MIT professor, Noam Chomsky, studied languages for years. He says it seems the brain organizes language in precise patterns. If you learn grammar, spelling, and word usage "incorrectly," it's still a pattern for most of your life, unless you take deliberate steps to change it.

"Non-standard" regional dialects, word usage, grammar, accents, and spelling variations aren't wrong in the sense that they DON'T have meaning. They're just non-conventional according to the standards of the grammar police in "higher institutions." People still understand them, especially within their own cultural settings.

Most people can make sense of this: 'Ah cun mithpell evry wurd in dis saintants, und yew stee-ull no whart it sez.' Is that awkward? Surely. But your brain still makes sense of it. Think: Mark Twain's The Adventures of Tom Sawyer and Huckleberry Finn.

We should all just relax and try to understand what's being said, even as we do our best to be understood. Ferret out the message from the noise in the medium. Many are here to learn. Let's make it a kind and safe environment for them.

burkphoto Loc: High Point, NC

Some of the sharpest images I ever made were exposed through a 1965 55mm f/3.5 Micro Nikkor that had been found by a college friend of mine in the sand on the beach in New Jersey! He gave it to me, as I knew where to get it fixed, and he didn't have a Nikon.

I had EPOI (predecessor of Nikon USA) remove the salt and sand and recondition it, and it has worked fine, ever since. My son uses it now, for video. It still has several light surface scratches on both front and rear elements.

frankraney Loc: Clovis, Ca.

Every lens can get dust inside. But it should not show on an image. on the front surface is a different story it will show but can be removed in post. If the stuff inside the lens is bad enough to show in the image, then you can send it back to the manufacturer for a rebuild, and only they can tell you how much it would cost.

selmslie Loc: Fernandina Beach, FL, USA

Getting back to the original question - dust (oil, fingerprints, scratches, etc.) on the front lens surface can cause some flare and loss of contrast, especially if the lens hood does not block direct sunlight or other light sources. On the rear lens surface it would probably only reduce the contrast some.

But if the camera is pointing away from the light sources it would take a more than just a little dust to cause any degradation in the image.

TV714

Another way to keep stalagmites and stalactites clear is the "G" in stalagmites say they come up from the Ground and the "C" in stalactites says they come down from the Ceiling.