more 70d review this is pretty good do watch if interested

for a super zoom lens, there's bound to be distortion, whether pin cushion or the other way around.

not a problem unless you have lines at the side where it shows a curvature.

yes you can do smtg about it but you loose part of your original framing..

Btw, whats the verdict on the new sigma 30mm art over the old one in terms of af?

The thing about the front or back focus issue, it happens when the lens is in a bad mood. When it's having a good day, then you get perfectly focused shots Not something that you can "fix" because it happens randomly, not happening all the time.

if it's out of focus and softness will show different characteristic in your photo.

OOF (eg inaccurate focusing or slow focusing or just plain FF / BF issue) then there will still be areas that are sharp, just not on the area you want.

lens softness - even the sharpest area (within the DOF) still shows signs of softness, like being applied a bit of gaussian blur.

in some cases if the lens glass is bad, you'll also see chromatic abberations (purple fringing) - usually towards the outer edges of the frame.

sifus, want to ask.. for macro shots, is acquiring a Tamron 90mm better or canon 100mm f/2.8 USM? According to shashinki, price difference around RM300.. Tamron cheaper and got extra 1 year warranty..

Any suggestions?

Thanks.

been thinking will I get better photo quality if I upgrade body (still sticking to apsc), below are my benchmarking. what you opinion guys?


KLCC by m.s.@.n., on Flickr

and how did you judge the sharpness? pixel peep?

many people expecting lenses to produce magical stuff.

U get from tonystark ?

those "bokeh balls' looks sunlight reflections off from the empty chairs.. had the same effect on the 50mm 1.8 when a car passed by in the background reflecting the sunlight but the ball is much bigger, probably due to the larger reflective surface

anyone knows where i can get the cheapest canon 24-70 f2.8 mkii and tamron 24-70 f2.8 vc?

The version I of the lens isn't very sharp. I had one and I was never really satisfied with the sharpness. Try the version II. It's miles ahead in terms of sharpness 

Trust me, the IS II is much, much sharper than the first version. Well worth the upgrade if you use the 70-200 often.

Based on my own observations, the 70-200 II is almost as sharp as my 100L Macro. 

I was super excited when I first got my 70-200 IS but was disappointed when I saw the pics. Still okay la but not what I would've expected from a RM6k lens. Was never really happy with it until the version II came out and I upgraded. 

u bought the first version? how much?

Waiting for street price~

just wish it is design for full frame probably gonna get lots of vignetting if use on FF maybe can't even...not sure...

i think it means the exposure range where your camera can lock focus or get correct metering...

by the way, sample pic for 70D from canon website: http://web.canon.jp/imaging/eosd/samples/eos70d/