Go Back   Steve's Digicams Forums > Digital SLR and Interchangeable Lens Cameras > Canon Lenses

Reply
 
Thread Tools Search this Thread
Old Dec 20, 2010, 2:16 AM   #1
Senior Member
 
pj1974's Avatar
 
Join Date: Jun 2005
Location: Adelaide, South Australia
Posts: 2,914
Default Just purchased a Canon EF 70-300mm f/4-5.6L IS USM

Hello friends

Must dash off in a few minutes for dinner with friends, but just before I do - a few quick words about the Canon EF 70-300mm f4-5.6 L IS USM lens that I purchased this afternoon.

It's built very well. A zoom range I love. Sharp wide open. Great confidence inspiring focus & IS combination.

As a photo says a thousand words, without further ado, here are some initial photos.

Paul
Attached Images
 
pj1974 is offline   Reply With Quote
Sponsored Links
Old Dec 20, 2010, 2:18 AM   #2
Senior Member
 
pj1974's Avatar
 
Join Date: Jun 2005
Location: Adelaide, South Australia
Posts: 2,914
Default 100% crop of the above photo

No post processing other than a minute amount of unsharp mask to bring out a detail at 100%.

Later I will post more photos that I took in the first 30 minutes that I had this lens. Exif should be retained in the JPGs.

Note - please remember this 100% crop is from a photo of a small bird from quite a distance away - not a 'close up' photo of a bird.

Paul
Attached Images
 

Last edited by pj1974; Dec 20, 2010 at 6:52 AM. Reason: Added "Note"
pj1974 is offline   Reply With Quote
Old Dec 20, 2010, 5:55 AM   #3
Senior Member
 
TCav's Avatar
 
Join Date: Sep 2005
Location: Washington, DC, Metro Area, Maryland
Posts: 13,571
Default

The combination of a 7D and that lens will certainly be a winner. I'm looking forward to more of your posts.
__________________
  • The lens is the thing.
  • 'Full Frame' is the new 'Medium Format'.
  • "One good test is worth a thousand expert opinions." - Tex Johnston, Boeing 707 test pilot.
TCav is offline   Reply With Quote
Old Dec 20, 2010, 6:49 AM   #4
Senior Member
 
pj1974's Avatar
 
Join Date: Jun 2005
Location: Adelaide, South Australia
Posts: 2,914
Default Photo 2 - resized

Another photo, nothing spectacular. Just a quick snap from my back yard. I only had a very short time to take a few photos. The weather wasn't favourable (windy and overcast) - so the birds weren't hanging around and most things swaying in the wind.

However the photos I did take proved the focus works well (even during my first use of it), and it's nice and sharp wide open. This photo, 277mm at f5.6.
Attached Images
 
pj1974 is offline   Reply With Quote
Old Dec 20, 2010, 6:50 AM   #5
Senior Member
 
pj1974's Avatar
 
Join Date: Jun 2005
Location: Adelaide, South Australia
Posts: 2,914
Default 100% crop of photo 2

Again, a 100% crop of photo from previous post.
Attached Images
 
pj1974 is offline   Reply With Quote
Old Dec 22, 2010, 8:36 AM   #6
Senior Member
 
JustinThyme's Avatar
 
Join Date: Aug 2010
Location: Princeton, NJ
Posts: 361
Default

A bit hard to discern IQ. The crops appear to be more than 100% and appear a bit on the soft side.
JustinThyme is offline   Reply With Quote
Old Dec 23, 2010, 10:16 PM   #7
Senior Member
 
Mugmar's Avatar
 
Join Date: Jul 2005
Posts: 3,156
Default

Thanks for sharing. Those look pretty good.
__________________
MUG's Flickr

MAR's Flickr
Mugmar is offline   Reply With Quote
Old Dec 23, 2010, 10:22 PM   #8
Senior Member
 
pj1974's Avatar
 
Join Date: Jun 2005
Location: Adelaide, South Australia
Posts: 2,914
Default

Hello Justin

I'll admit that the photos are probably not the 'ideal' test photos - particularly as the subject is small in the frame, and the depth of field shallow, so doesn't do it justice.

They are 100% crops though (not more). Often many people will judge 'sharpness' by how much detail of the subject they can see (e.g. a speck of dust on a coin, captured with a macro lens) often has people commenting "oh, that's sharp" (but that's magnification factor rather than pure sharpness).

So when viewing the crops of the photos above, I wanted to demonstrate the level of detail it caught even in a small percentage of the overall 18mp photo. So it might not be helpful in a way, due to perception.

I'm just about to post some more photos (of some birds I photographed yesterday) in a separate thread. That might be somewhat more useful.

Cheers

Paul
pj1974 is offline   Reply With Quote
 
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -5. The time now is 1:31 AM.