Look at it this way: do you want a lens that just plopped off of the assembly line without final qc, or do you want a lens that's been carefully checked over? Get the refurb
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what about people reporting that its not really 300mm on the long end so not providing much benefit over the 70-200 from canon anyway?
It is an industry standard practice to round the values. Canon do it too.
In theory, the front aperture should be 300/2.8=107mm in size. I just put a tape measure across the unobstructed front element of mine. It's near enough 100mm diameter. Therefore either the focal length is a bit less, and/or the focal ratio is a bit slower. It could be either 300mm f/3, or 280mm f/2.8, or somewhere in between. Regardless, it's still a truck load more than 200mm f/2.8.
I have made the following comparisons - sorry not the lenses you are interested in, but perhaps the conclusions might be similar.
- My 200 f2.8 (prime) with 1.4x teleconverter is not quite as good as the plain 200 f2.8 taken from a closer distance. Resolution is surprisingly close, but chromatic aberration is noticeable with the 1.4x and largely absent without it... The 1.4x combination would be acceptable for many purposes with careful PP.
I understand that the 2x TC noticeably affects image quality.
Okay, I am interested in this lens but... I use and love the 400 5.6 L, and what I would really like is a 500 5.6, with or without "IS" say $2500 without and $3200 with "IS"
Just guessing, but I think 500/5.6 puts it into the ~$4K range based on element size. I doubt we'll see one - over 400mm, Canon wants more of your money than that...
Don't tell Canon, but, I would probably buy it at $3500-$4000. I really think there is a missing $3-$5000 hole in their lineup.
I'd be pretty interested in a 500 f5.6 IS at that price expecially if its not too bulky and has an integrated lens hood like the 300f4L and 400 f5.6 do
Just to add to the confusion...some wide-angle lenses that can focus very closely, such as the TS-E 24 II and the 8-15 fisheye, can make for much more interesting "macro" lenses than a true, dedicated macro lens. They let you get super-close to your subject for an interesting perspective and generally do a great job at including enough of the surroundings to put it in context.
The Sigma 20mm f/1.8 is king at this although it has a macro ratio of 1:4
Edit: due to its MFD of 0.2 m.
Great! How about adding a 580EX or 600EX. You'll get more power. The 430EX will be a backup in case your main flash acts up. Also you could try some multi-flash setups.I do weddings, events, promo, indoor and outdoor portraits some landscape for prints.
I'd get the 5D3.
Keep the T3i with the 8-16 and 8 mm fish for specialty shots at your events, also as a backup.
If you only have the 430EX then you'll need one or two more hotshoe flashes. You have plenty of glass. Looks like you'll be all set.
I do have a 430EX Flash, also Manfrotto 055XPROB Pro Tripod, Manfrotto 496RC2 Ball Head with Quick Release Replaces Manfrotto 486RC2, Photography/Video Portrait Umbrella Continuous Triple Lighting Kit, a few other accessories and several photography books on my iPad.