MTF chart you can get it from the lens company website...

The best is to look for this information from the lens manufacturer's website.

Examples:

Olympus ZD 50mm f2 Macro
http://www.olympusamerica.com/cpg_section/...0_20M/index.asp

Sigma 150mm f2.8 Macro
http://www.sigma-imaging-uk.com/lenses/macro/150mm.htm

Nikkor 70-200mm f2.8 VR
http://nikonimaging.com/global/products/le...8g_if/index.htm

oohh.. thank you so much for that info.. but how do i read the MTF chart.. a bit confuse..

Check the Sigma website that I had given you. There is a link on the MTF Chart which shows you how to read it.

Have been away for almost 2 weeks.. WHY?! coz i had my exams!! >< wow.. 2 weeks of tireness... >< cant even have the energy to hold my camera now!! lol... GOOD NEWS is, today's my last paper... after 4pm, i'll be as free as a bird! I'll be taking photos at a studio tomolo... will post them once i got them! stay tune!! !!!! =D XD XD XD

This post has been edited by derek87: Sep 20 2007, 04:14 AM

Ahh... Here are some photos... Theme is Product shooting.. My first attempt. Product was not my choice, just assigned to shoot... here it is..

#1


#2


#3


C&C pls.. thank you..

This post has been edited by derek87: Sep 20 2007, 07:47 AM

The products are a little blur and usually when product shoots, the product you are shooting needs to be crystal clear.

#1 - focus not sharp enough, probably DOF too shallow

What was the aperture setting for this shot? I usually use around f13 when shooting products.

As for the first pic. i purposely wanted the others to be blur.. and only focus the heart...

The other two... what was in my mind was. focus on the bottle and give the ribbons front and back a little of bokeh... I din know product shooting have to be a whole pic clear shoot. Hmm.. perhaps i should change my style... =)

All are using F/8.

but i feel that the heart is not sharp enough

back one or front one...

gear was 50mm +4 close up

It's indeed not sharp, at least on my monitor. I think this is due to: 1) The close up filter, and 2) Jpeg resizing.
You shall have USM the photo before posting this up.
I know you want to play with selective focusing, but if more than 80% of the composition is out of focus, it looks bad. Unless it's a uniform bokeh.

This post has been edited by kelvinyam: Sep 21 2007, 07:46 AM

Thanks for the advice... BTW, what does "USM the photo" mean?

USM... ultrasonic motor ...
no lah.. the USM = UnSharp Mask...

Its a photoshop/elements/cameraRAW technique to sharpen the photo Try Googling it and you will get plenty of results

+4 closeup... the DOF is very very shallow... have to be quick when you recompose the pic... if not... you will see that your SHARP focused area "move"
I played with closeup filters before... They are wonderful.... but, recomposing pics is pain and need to be FAST and precise. good try...

Ok here it is.. USM done with the photo... i see a little bit difference, what do u guys think?

Well I can see the heart is sharp but in product photography, you shouldnt just concentrate on one part of the entire object. Since one heart is sharp and the other is blur, the background would then be considered very distracting.

the front one.
also probably due to 'distraction' since there's another heart in the back