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Will Canon "protect" lenses hurt image quality ?

mangurian
Rising Star

Canon sells these and says they can be left on all the time.   Is this a high quality glass ?

 

Any info on how they effect image quality appreciated.

45 REPLIES 45


@ebiggs1 wrote:

Oh, BTW, Trevor some are rude doing it.


REALLY !!!!  Smiley SurprisedSmiley Surprised

Ernie, my friend, I am shocked, devastated nonplussed... and so moving on! Smiley LOL


cheers, TREVOR

The mark of good photographer is less what they hold in their hand, it's more what they hold in their head;
"All the variety, all the charm, all the beauty of life is made up of light and shadow", Leo Tolstoy;
"Skill in photography is acquired by practice and not by purchase" Percy W. Harris


@ebiggs1 wrote:

... it is a whole different ball game when it is your livelihood. It is also amazing how many become infallible in their ways after a short while with an expensive camera. It is an expensive camera so I must be good!


I know what you mean.  To quote Percy W. Harris  "Skill in photography is acquired by practice and not by purchase."

 

That may sound odd coming from someone with so much gear, but I have never expected that it would make me a better photographer, I just like the tech, and sometimes it was a needed upgrade.

 

It's a matter of understanding the difference between features and benefits.  A feature is a characteristic of a product or service that it offers to any purchaser.   A benefit is specific to a person and is something that will offer to give an increase in performance or reduce a constraint to that performance.  People need to focus on the benefits they need and ignore the rest of the hype.  So many people argue the minutea of new releases as if they can really make a difference to their photography.  As Ansel Adams said, the six inches behind the lens are the most critical element...

 

So for me getting smaller lighter cameras has been helpful in overcoming my injuries when I could barely walk, let alone carry a heavy DSLR and big lens, but with the smaller lighter gear I could still take images and that was important to me.

 

The other day, in one of the camera groups that I engage with a newbie looked at my rather modest DSLR and telephoto and cooed that she was always impressed by a man with a big lens...  I wasn't too sure how to take that one! Smiley Wink

 

I just went out shooting and got a couple of shots I like with the humble EOS 650D and the 18-135mm lens.  I don't know if I could sell them, but I don't care any more, my values have morphed with my new reality.


cheers, TREVOR

The mark of good photographer is less what they hold in their hand, it's more what they hold in their head;
"All the variety, all the charm, all the beauty of life is made up of light and shadow", Leo Tolstoy;
"Skill in photography is acquired by practice and not by purchase" Percy W. Harris

"It's a matter of understanding the difference between features and benefits."

 

It is also a matter of the spreadsheet if you are in business.  How much will that new feature save me or make more for me.

 

" I don't know if I could sell them, ..."

 

Probably just a matter of marketing.

 

"... with the humble EOS 600D and the 18-135mm lens."

 

You do get some amazing results from your gear. I used to not think it possible, or lets say unlikely, so even us old dogs can learn.

EB
EOS 1D, EOS 1D MK IIn, EOS 1D MK III, EOS 1Ds MK III, EOS 1D MK IV and EOS 1DX and many lenses.


@ebiggs1 wrote:

"It's a matter of understanding the difference between features and benefits."

 

It is also a matter of the spreadsheet if you are in business.  How much will that new feature save me or make more for me.

 


Absolutely Ernie if it improves the bottom line that is a benefit - either by earning more or saving expenses or loss.  Benefits are ANYTHING that improves one's performance, be it in technical, artistic, personal or financial terms.  People often just buy the latest thing because it is new.  Sadly they forget that  the old gear worked just fine and often there is a drop in productivity as the new gear is understood and familiarity worked up.

 

Thank you for your kind thoughts.  I could not justify the gear if I didn't use it, and it reminds me to work on my skill not on my wish list!

 

This was taken at the steps inside the Auckland Museum.  I was walking down and blinded by the sunlight.  As I turned to go down the next flight I looked back (I always encourage my students to do that) and saw this.   I liked the interplay of light and dark at that precise moment, how the light was pretty much symmetrical at the top and bottom steps and the biggest shadow, cast by the window frame, sat neatly on the edge of a step.  Then there was the pattern of the marble.  A simple exercise in contrast and tone.

 

"All the technique in the world doesn’t compensate for the ability to notice"  Elliott Erwitt

IMG_0455.JPG

Nothing flash, but it made my eyes smile...


cheers, TREVOR

The mark of good photographer is less what they hold in their hand, it's more what they hold in their head;
"All the variety, all the charm, all the beauty of life is made up of light and shadow", Leo Tolstoy;
"Skill in photography is acquired by practice and not by purchase" Percy W. Harris


@Tronhard wrote:

 

This was taken at the steps inside the Auckland Museum.  I was walking down and blinded by the sunlight.  As I turned to go down the next flight I looked back (I always encourage my students to do that) and saw this.   I liked the interplay of light and dark at that precise moment, how the light was pretty much symmetrical at the top and bottom steps and the biggest shadow, cast by the window frame, sat neatly on the edge of a step.  Then there was the pattern of the marble.  A simple exercise in contrast and tone.

 

"All the technique in the world doesn’t compensate for the ability to notice"  Elliott Erwitt

IMG_0455.JPG

Nothing flash, but it made my eyes smile...


Trevor, you are my kind of grabshooter. Very nice shot.

Bob
Philadelphia, Pennsylvania USA


@RobertTheFat wrote:


Trevor, you are my kind of grabshooter. Very nice shot.


"Our duty is to experiment" Alexander Rodchencko

 

Thank you Bob, that's very generous! Smiley Embarassed


cheers, TREVOR

The mark of good photographer is less what they hold in their hand, it's more what they hold in their head;
"All the variety, all the charm, all the beauty of life is made up of light and shadow", Leo Tolstoy;
"Skill in photography is acquired by practice and not by purchase" Percy W. Harris
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