What does IQ means?

When I heard you guys saying "this lens has better IQ", I know that I means it has better stats. What makes a good IQ? or what do I look for in spec of a lens to see the IQ?

IQ stands for Image Quality. I'm not gonna even pretend I know the technical aspects involved but bokeh, sharpness, clarity all play a role.

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Originally Posted by KenRC51

When I heard you guys saying "this lens has better IQ", I know that I means it has better stats. What makes a good IQ? or what do I look for in spec of a lens to see the IQ?

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I dont bother with specs or stats, I judge a lens on its real world use and actual pictures. I dont trust "lab tests" and specs.

If youre lookin at new lenses, take a look at real world sample images, or rent it before you buy. There are plenty of online places to rent from.

Nothing worse than reading a lens has good specs and you get it home and it sucks ass.

Ken.. good question.. i should have asked when i first started out..


So many abbreviations, us newbs get lost.

The hardest ones Ive tried to figure out were CA and PP.

Just like in high school i just pretended to know what they were talking about to be cool.

Takes a lot to be part of DCRP crew.

pbase is one of my favorite places to gage image quality.

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Originally Posted by nsjuice

Ken.. good question.. i should have asked when i first started out..


So many abbreviations, us newbs get lost.

The hardest ones Ive tried to figure out were CA and PP.

Just like in high school i just pretended to know what they were talking about to be cool.

Takes a lot to be part of DCRP crew.

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haha, what is CA and PP? I am totally a newbie in the DSLR stuff.

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Originally Posted by jcon

I dont bother with specs or stats, I judge a lens on its real world use and actual pictures. I dont trust "lab tests" and specs.

If youre lookin at new lenses, take a look at real world sample images, or rent it before you buy. There are plenty of online places to rent from.
.....

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I agree with jcon that you don't judge a lens from lab tests. They should be used as a guide to see the lens potential. Owners' opinions can be very biased so beware of that too. Where I am it's hard to rent a lens and very expensive so I have to pay some attention to those 'lab tests' - no other choice.

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Originally Posted by jcon

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Nothing worse than reading a lens has good specs and you get it home and it sucks ass.

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I know how that feels. Recently I spent $975 on a lens but unfortunately got a bad copy; so not easy when buying a lens you might get a lemon. Make sure you don't damage or scratch it because if that happens you can't get exchange or refund.

CA = chromatic aberation, PP = purple fringe.... they are the same things. It's where the highlight meets the dark area and you see purple bands.

IMHO, CC or PP affects a lens IQ. :D

PP could also mean post processing.