Not exactly true for 1.4G speed. Low light condition the higher grade body would spend lesser time "fine tuning" for the focus compared to the entry body.

But for D lens, yes speed depends on the screw drive motor, and also 1.4G would AF even faster under low light due to SWM's better accuracy compare to screw drive. My friend's f/1.4D the screw thread kinda worn out, only can focus consistently at f/2.8 and above ._. 50mm f/1.4D on D3s lol, wedding photog guy.

I would have to agree with that.. and both 50 1.4G & 1.8G have more accurate focus lock compared to their D versions.

A tribute to old D lenses.. durable indeed. Still can go on and on.. if only they could put weather sealing on those D lenses like the tank-like 85 1.4D

Tried the sigma 50 1.4... i can say that the lens locks on faster than nikon's 50 1.4G.. the only downside is that it's heavy and big for a 50.

uihhh...alia sofea. From utara ke bro?

Sigma 1.4 focuses quick, but accuracy is a big concern for me especially under low light.

Tested siggy 50/1.4
Even bright day light, the focus is not accurate.
I was focusing on the eyes but end up sharp at hair

During the event last week i tested both siggy 50mm 1.4 on canon and nikon (5dmk2 and D700). Not sure if its body related or what but it seems easier to snap focus on D700 compared to 5dmk2

hye sifus here.. i have a question..
can Samyang 85 1.4 auto focus on d90, d7000, etc.

why u no read specs?
it cannot auto focus on anything.

ty

Spam skit

hopefully the next/newer batch will have these corrected..
so for now, dont shoot at f5.6 lah..

yup2.. kawan naem kaki vanggey tu la..haha

Tell your friend naim .. mmg body 5dm2 slow ponnn~~ last2 pinjam pakai nikon jugak shoot event.. LOL!


I tested two different sigma 50 1.4 with two 5dm2 - really quite fast in daylight .. but didnt really look closely whether the focus is accurate

I tested two different sigma 50 1.4 (one older version with matte black coating & new one with smooth black) with one d3s - I can disregard camera shake or subject moving as the shutter speed is well above 1/1000s, wide open, stationary human subject & sunlight. Now this is a little bit weird... i took several shots at the same angle on the same point at the subject, when I zoomed in some were sharp enough (even at 1.4) but some were off like it was front focusing or something & thus making it soft. Im using the 50 1.8G and took a lot of moving subjects on the go and it suffers very little in terms of accuracy.

People on the net were saying it was prone to back/front focusing problems and yes this proved it. Some were fine out of the box but later after a few months .. got back/front focus probs.. got my other friend went to buy this siggy 50.. then he saw it's off focus.. the tokei kedai said, "adjust the af-fine tune.. that lens always like that one" what worries me is that my friend need to adjust so much till it was almost maximum just to get it right.

The only thing I noticed right away is that the sigma 50 1.4 is less contrasty making it more natural looking and better for portraits compared to the 50 1.8G... but AF wise I dont really trust it

This post has been edited by alpha_company: Mar 4 2013, 03:36 PM

strangely tho the chroma fringe i get on digital bodies does not seem to appear in my FE2 body! 50mm 1.4D open wide will have chroma .. not picked up in film

hahaha ler small world weh...hari tu event world drums kat ipoh ngan dia ar

5DMK II AF never fast . period

the power of film.. (has build in super processing to remove chroma fringing) hahahaha.. in all seriousness though, digital still has it's weaknesses

chrome appears when shooting JPG, or does it happen during shooting RAW also?
processor not so good one lah?

True true...but the siggy AF was decent la, even on D90 body

has anybody tried the tamron 24-70 f/2.8 vc on a nikon full frame body? how is the af accuracy of it?