Lesson learned...
Posted: Tue Jun 05, 2007 6:25 pmI received my Canon 70-200 F2.8 IS from Poon a few weeks ago. Beautifully packaged and presented, built like a tank etc etc. I had a lot of fun for a few weeks, then I started to notice that the images were not as sharp as I would have expected.
I mainly shoot wide open, so I stopped down a bit and alas, no discernable difference in image sharpness. I called in to see a very well respected pro in Brisbane last week, he took a series of test shots for me with and without IS and came to the same conclusion - only 20% of shots were tack sharp. This is a legendary lens and should produce A1 results most of the time.
I was wondering what to do and then I thought of something - I had an el cheapo protective filter on the front. I removed it and voila!! - photos are tack sharp to the expected standard.
So the moral of the story is, either buy a top quality filter for your expensive lens, or use none at all, which is what I am going to do, at least for the present time. I know this is not news to many on this forum, but it is true anyway - don't buy cheap lens filters.
Ozi.
I mainly shoot wide open, so I stopped down a bit and alas, no discernable difference in image sharpness. I called in to see a very well respected pro in Brisbane last week, he took a series of test shots for me with and without IS and came to the same conclusion - only 20% of shots were tack sharp. This is a legendary lens and should produce A1 results most of the time.
I was wondering what to do and then I thought of something - I had an el cheapo protective filter on the front. I removed it and voila!! - photos are tack sharp to the expected standard.
So the moral of the story is, either buy a top quality filter for your expensive lens, or use none at all, which is what I am going to do, at least for the present time. I know this is not news to many on this forum, but it is true anyway - don't buy cheap lens filters.
Ozi.
