EOS 350D + Sigma 70-300 APO DG Macro

Hoky · 13th October 2005

Somehow I kinda feel that I ain't getting the best copy of my Sigma 70-300 APO DG lens.
Just ain't getting the magical touch. The autofocus is not helping either. Had to MF most of the time.

Can someone with the above combination post some photos for comparison?
If possible, please post EXIF data as well.

JediForce4ever · 13th October 2005

what happened to your auto focus??

Hoky · 13th October 2005

Originally Posted by JediForce4ever

what happened to your auto focus??

I feel that it's not focusing sharp enough. Maybe it's just psychological.

JediForce4ever · 13th October 2005

Originally Posted by Hoky

I feel that it's not focusing sharp enough. Maybe it's just psychological.

is it better when you MF or still the same??....

Hoky · 13th October 2005

Originally Posted by JediForce4ever

is it better when you MF or still the same??....

I psychologically believe it's better when I MF, although some friends say it's 'about' the same.

LeaderXXX · 18th October 2005

For my own exp.
mf is faster if u use to it plus save batt power too.
But not much different on sharpness for e outcome.

marcwang · 18th October 2005

I have this lens once and I guess you get what you pay for, probably a bit more. This lens has a terrible bokeh particularly the background has highlights and lots of details where they are renderred fuzzy. However, I am impressed by its sharpness from 70-200mm where is really excels. It is sharp one stop down, corner to corner, very sharp indeed. 200-300mm is where it starts to show its weakness. Autofocus is slow, and the lens is very very soft wide open, especially in the corners. The best mix of centre/corner sharpness can be achieved at f16-f22 when shooting at 300mm... .

Hoky · 19th October 2005

Originally Posted by marcwang

I have this lens once and I guess you get what you pay for, probably a bit more. This lens has a terrible bokeh particularly the background has highlights and lots of details where they are renderred fuzzy. However, I am impressed by its sharpness from 70-200mm where is really excels. It is sharp one stop down, corner to corner, very sharp indeed. 200-300mm is where it starts to show its weakness. Autofocus is slow, and the lens is very very soft wide open, especially in the corners. The best mix of centre/corner sharpness can be achieved at f16-f22 when shooting at 300mm... .

Yes, you have spoken my sentiments.
However I have yet to try f16-f22 at 300mm.

Never get enuf lights these days.
Thanks to the rainy season.

chilli padi · 24th October 2005

OT a bit, but the max aperture is 4 for this lens right? i can't seem to get to 4?

majere2sg · 24th October 2005

Originally Posted by chilli padi

OT a bit, but the max aperture is 4 for this lens right? i can't seem to get to 4?

F/4 at 70mm ? aperture priority ?

Hoky · 24th October 2005

Originally Posted by majere2sg

F/4 at 70mm ? aperture priority ?

I think it's F/4.5 at 70mm.

chilli padi · 25th October 2005

Originally Posted by majere2sg

F/4 at 70mm ? aperture priority ?

yup~ it's aperture piority but i can't remember what focal length i set...

Ah Pao · 25th October 2005

The aperture profile of this lens is about f/4 at 70mm, then progresses to f/4.5 to around 135mm+ and finally f/5.6 at around 200mm and up. I can't really remember as I don't have the lenses + camera at hand (in office right now

).

The zoom position of the lens is important since it's not a constant-aperture lens.

13th October 2005	#1
Hoky Member Join Date: Mar 2004 Location: Singapore Posts: 1,186	EOS 350D + Sigma 70-300 APO DG Macro Somehow I kinda feel that I ain't getting the best copy of my Sigma 70-300 APO DG lens. Just ain't getting the magical touch. The autofocus is not helping either. Had to MF most of the time. Can someone with the above combination post some photos for comparison? If possible, please post EXIF data as well.

13th October 2005	#2
JediForce4ever Senior Member Join Date: Aug 2005 Location: Singapore, CanonGraphers.org Posts: 3,163	Re: EOS 350D + Sigma 70-300 APO DG Macro what happened to your auto focus??

18th October 2005	#6
LeaderXXX Member Join Date: Mar 2005 Posts: 419	Re: EOS 350D + Sigma 70-300 APO DG Macro For my own exp. mf is faster if u use to it plus save batt power too. But not much different on sharpness for e outcome. __________________ happy shooting

18th October 2005	#7
marcwang Member Join Date: Jan 2003 Location: East Singapore Posts: 1,023	Re: EOS 350D + Sigma 70-300 APO DG Macro I have this lens once and I guess you get what you pay for, probably a bit more. This lens has a terrible bokeh particularly the background has highlights and lots of details where they are renderred fuzzy. However, I am impressed by its sharpness from 70-200mm where is really excels. It is sharp one stop down, corner to corner, very sharp indeed. 200-300mm is where it starts to show its weakness. Autofocus is slow, and the lens is very very soft wide open, especially in the corners. The best mix of centre/corner sharpness can be achieved at f16-f22 when shooting at 300mm... . __________________ Marc Wang Photography

24th October 2005	#9
chilli padi Member Join Date: Apr 2003 Location: A tiny island called Singapore Posts: 112	Re: EOS 350D + Sigma 70-300 APO DG Macro OT a bit, but the max aperture is 4 for this lens right? i can't seem to get to 4?

25th October 2005	#13
Ah Pao Member Join Date: Nov 2003 Location: Singapore Posts: 1,586	Re: EOS 350D + Sigma 70-300 APO DG Macro The aperture profile of this lens is about f/4 at 70mm, then progresses to f/4.5 to around 135mm+ and finally f/5.6 at around 200mm and up. I can't really remember as I don't have the lenses + camera at hand (in office right now ). The zoom position of the lens is important since it's not a constant-aperture lens.