Thursday, February 28, 2008

The tale of 2 lenses – ady’s dilemma

Ok Ady wants a new lens – he needs it now!! He has a 50mm, 18-55 kitty, 70-300 4/5.6f and a 10-20 mn

So ady wants to be a fashion photographer and cannot forget the biker within him needs a wide lens too. He has a 350d with a 1.6x crop.


Ady needs:

Lens for Full Frame ofcource
Image Stabilization
Max Lens Power
Long lens – equivalent of 100mm on a 35mm
Short lens – starting at a normal technical angle of view
Price value – the lighter the better
And No vignetting when he upgrades to a Canon 1Ds Mark III (he has no imminent threat on a crop sensor)


So the lenses under the compare glass are the EF 24-70mm f/2.8L USM and the newer EF 24-105mm f/4L IS USM.

The 24-70 has a better power, but no IS and a low focal length and is COSTLY
The 24-105 has lower power, IS and high focal length and is CHEAPER

24 – 105 mm
Advantages
Long range
Cheaper
Image Stabilization
L – Build
Lighter, smaller

Disadvantages
Slow Lens
Low power (f/4)
Vignetting

24 – 70 mm
Advantages
High Power, fast
Low Vignetting
L – Build

Disadvantages
Low Range
Heavy, larger


The MTF charts of the 24-105 and the 24-70 (available on the links of the lenses above)

In Closed Aperture Mode,Contrast replication of the 24-105 falls just at 13mm (from the center of the image toward the edges) and the 24-70 falls somewhere around 18 (18*2 = 36) So vignetting could happen earlier in 24-105

In OpenMode, its at 13 mm where the drop occurs but then remember the 105 is a f/4 lens while 70 is a f/2.8


Price factor:

Jayesh/fotocircle asks for 42k, Vinod asks for 38k for the 24-105


So if the price is 100$ more for the 24-70 mm I don’t mind having a faster lens that performs great!

Friday, February 01, 2008

Nikon Vs Canon debacle and my new camera flash :)

Its so amusing to see 2 guys (nikon and canon users respectively) argue at vinods place in a heated burma bazaar in majestic. That too over speculation on what their cameras can do.


I think its you - the photographer who decides which camera is
better

Dudes fight it over at some photo contest !


In midst of this mayhem :)), i pickup a 580 EX II flash.


Will update my flickr with photos!