PDA

View Full Version : Canon Zooms - F2.8 or F4.0



bennito42
11-06-2011, 7:41pm
I currently own the Canon F4.0 24 - 105 L zoom together with an F4.0 70 - 200 Canon L series.
As I am mainly taking landscapes and candid (street scenes), I am thinking about changing the 24 - 105 lens for the F2.8 24 - 70 L series.
Taking into account costs (I'll sell the F4.0 24-105) , I wondering if there are enoughadvantages to buy the F2.8 lens ???

I @ M
11-06-2011, 7:45pm
Bit hard to answer that one without knowing the sort of quality of images you are producing at the moment with your current gear, how about sharing some that you have taken in the last 2 1/2 years that you have been a member here. :)

Scotty72
11-06-2011, 7:49pm
The advantage of a F/2.8 compared to a f/4 is 1 stop of light :cool:

peterb666
11-06-2011, 8:09pm
Rather than dump a perfectly good lens, why not get the Canon 16-35mm f/2.8 and head into UWA territory. It will exend your range with lanscapes.

etherial
11-06-2011, 8:54pm
Two questions. Do your find yourself looking for an extra stop of Shutter speed? How often do you use your 24-105 at longer than 70mm?

fabian628
11-06-2011, 9:23pm
if you require a shallow depth of field, yes
if you find you need faster shutter speed in low light, yes

I think the image stabiliser will be better for low light if you do not need to stop action. Then again the camera may need the wider aperture to lock focus.
You may also consider the size of the 24-70. Its bigger than the lens you currently have. Might affect your decision. :th3:

jdbb
12-06-2011, 8:46am
I've got the f2.8 24-70L - it's a good lens but I'm thinking about changing it for a f4.0 24-105L to fill the gap between the 24-70 and the 100-400.

bennito42
12-06-2011, 7:24pm
Thanks for your replies...... think I'll stick with what I've got, and maybe save for the Canon 16 - 35

Xenedis
12-06-2011, 7:54pm
The f/4L zooms you have are fantastic lenses; they're just a stop slower than their f/2.8 alternatives.

If you require more depth of field, the f/2.8 aperture will not be particularly useful. If you want to freeze movement in dim light, f/2.8 helps. You may still need to push your ISO depending on the scene.

I use my 16-35/2.8L II quite extensively, but rarely wide open, as I shoot a lot of seascapes, landscapes and cityscapes, where I want depth of field. I shoot mostly at f/11 or f/8.