After 2 weeks using a tokina and a olympus 500mm mirror lens, I tried to make an as serious as possible test to choose which lens i was going to keep. It'a non scientific test with line per millimeters counting and so on.
I just added as a reference my 300L2.8+TC1.4X, which gives me very good results for quad bike or F1 races ..
I know that a cropped 420mm at F/4 would not be directly comparable, but I know what I get ususally when I use it ..
This can be a sort of my reference in monza 2009
I want to use mirror lens as a pocketable lens for candid shots. For serious activities as a sort of journalist for some websites, I will, of course bring he 3.2kg 300L2.8+TC1.4X or TC2X.
But as a walkaround my perfect and unbeatable combo will be 24L1.4II+85L1.2II+500mmF/8 mirror
So I used a type of reference target wich is about 50 meters far from my window.
I took with a tripod a centered picture and a left border one.
I think in a top or lower corner, it has no real sense, in the fact that vignetting is rather strong and an handhelded 500mm picture with a focus made in the corner should look like a sort of nightmare.
I expected best results would be with canon 300L2.8 even crooped, but after analysing the results ouch ....even after trying three times, results were not closed at all !!!!
So that's what I used as a target
As centered target
IMAGE LINK: http://newworld666.smugmug.com …ull/871057685_japbp-O.jpg
as border target
IMAGE LINK: http://newworld666.smugmug.com …ull/871057533_yC79v-O.jpg
Focus was made with lifeview and zoom X10
To compare best is to click on pictures to get a type of fullHD cropped in different tabs and switch between them.
Donc les trois résultats pour le centre sont :
So results for the centered targed for the 3 lenses
Canon 300L2.8+TC1.4X -> 420mm @F4
IMAGE LINK: http://newworld666.smugmug.com …mmC/871057761_jGH9g-O.jpg
Tokina 500mm F/8
IMAGE LINK: http://newworld666.smugmug.com …mmC/871057828_uJ6aj-O.jpg
Olympus Zuiko 500mm F/8
IMAGE LINK: http://newworld666.smugmug.com …mmC/871057894_7qqnZ-O.jpg
Last sunday, I was think I could get as my first 10 "real life" pictures a quite good results with the zuiko, but I must say that with the target, the Zuiko is much better than the other one (I didn't try the canon at F8)
I was thinking the Tokina gave also rather good results, but now I think ther is a big margin between the two lenses.
On the border, the gap is even bigger, as the Tokina gets some distorsion and make a type of compressed target.
All pictures are taken at 1/800 on a un moved tripod.