conurus

lam · Joined: 27 Apr 2008 Posts: 127 Location: Bangkok Thailand

Hi All
While I'm waiting for my converted N400/4 back, I plan to purchase canon 1.4xII converter for extra reach when shoot on 1Dk4.
I just wonder how much it reduce on micro-contrast from zeiss glass or better to not use converter and just up-size in photoshop to maintain 3D-effect.
Sorry for my poor english , I tried my best.
Regards
lam

CP · Joined: 17 May 2007 Posts: 15

Sure it must reduce the micro-contrast from all glasses and better not to use any tele-converter

lam · Joined: 27 Apr 2008 Posts: 127 Location: Bangkok Thailand

Thankyou CP

I will appreciat if someone show some image from N400+1.4x Please.

I really love 3D-effect from zeiss micro contrast. Here is sample from N85 on 7D and will be perform better on 1D or 5D&1Ds

Leo · Joined: 23 Nov 2006 Posts: 24 Location: Toronto, Canada

Just come across this post. I do have the N400 converted and with 1.4X (same lens construction as 1.4x II. Canon claims 1.4X II has different coating to reduce the light reflection at rear element but I don't think it will cause any different with the previous generation in my case.) The different is not that big except the light falloff is a bit higher. Contrast is a bit lower in theory and by my perception when you are using the 1.4x. But it is very difficult to tell since yourmy camera may adjust the output automatically. There is no reliable comparison if we are just using digital camera. The only way to test the lens is to use AgX slide or B/W. Bracketing the color chart/target with two settings will tell you the answer.

I am very sure N400+1.4x will give you a great result. But still 1.4x is not a magic and will degrade the quality of N400 a bit. I haven't compare Canon 1.4x with other brands.

Yours,
Leo

lam · Joined: 27 Apr 2008 Posts: 127 Location: Bangkok Thailand

Thankyou so much Leo that help me alot.
I will go get canon1.4XII when my N400/4 back , other brand not sure. Thanks again.
regards,
lam

conurus · Posted: Wed Aug 18, 2010 11:59 pm Post subject:

I experienced slight colour fringing with a Tele-Apotessar 400/4 plus Canon EF 1.4x mark I extender, but no noticeable drop in resolution, on my 5D mark II. EF 2x did not cause any color fringing, but a noticeable drop in resolution. Mark II versions of the extenders may perform better optically.

lam · Joined: 27 Apr 2008 Posts: 127 Location: Bangkok Thailand

Thanks BoMing
This combination will perform good with FF sensor.

upallnight · Joined: 01 Jun 2010 Posts: 32

for what it's worth, canon announced revision 3 of their 1.4x and 2x extenders today.

i've got the 1.4x (v2) and find it to be quite good. i have to look *really* hard for any noticeable reduction in image quality on a good lens. the same cannot be said (in my opinion) of the 2x (v2).

canon -- naturally -- claim significant improvement in image quality. of course they would. i doubt the 1.4x could get much better, but if the 2x (v3) had the same image quality as the 1.4x (v2), then it would be quite a worthy purchase.

price of the v3 models is $500, which is quite a bit more than the v2's.

i understand weather sealing is improved, for those with weather sealed bodies.

http://www.dpreview.com/news/1008/10082611canonef14xiiief2xiii.asp