How to Test my new Tamron 28-75

[Joshua_Lee]

Hey guys, as you know from my earlier post, i went with the 28-75. In reading reviews on this lens, they say to test it out and make sure it is a quality lens with good IQ. Some say that you get a bad one every once in awhile due to it being a third party lens yada yada yada. Anyway, my question is what is the best test method for this lens to make sure it is a quality lens as far as sharpness etc? Please help me out or direct me on where to look.

Thanks

 

[Bram]

Uhmmmm you use it?

 

[Syntax]

Indeed, use it. That's the only way to know.

Some review sites will shoot at numbers, like a tape measure, or other forms of measurement and what not.

 

[Josh66]

Anyway, my question is what is the best test method for this lens to make sure it is a quality lens as far as sharpness etc?

There are tests you can do, but the first thing I would do is just use it normally.

If you notice problems after that, further testing may be warranted.

The first thing I would check is that it focuses properly. Sometimes it can be a little off (and sometimes sloppy technique can make you think it's a little off when really it isn't).

 

[tirediron]

^^ Go out and shoot some scenes with lots of detail and look at them closely on the computer. You can do more detailed tests, but unless you have a frame of reference (knowing what the you should be seeing) there's not a lot of point.

 

[Joshua_Lee]

Wow, I forgot how specific I need to be on here! haha Of course using it, that is a no brainier. I didn't know if there was a tripod test shooting the same scene at all different apertures, to see where it was sharp or where it falls off. That kind of test. Really just wanting to know what to look for so I know if I got a good lens or a lemon. Is it mainly sharpness issues you can have, color, or etc. Any advice would be great! Thanks for the input above! Seems to be focusing fine, but sometimes it is my handshake and not the camera. haha

thanks

 

[KmH]

How to test a camera lens - Bing=

See the second hit......BobAtkins.com and eventually go back and read from Part 1. Testing Camera Lenses - making sure you got a good one! - Bob Atkins Photography

 

[Josh66]

Wow, I forgot how specific I need to be on here! haha Of course using it, that is a no brainier.

I don't think it's that you weren't specific enough (I'm pretty sure everyone knew exactly what you meant) - but testing all that crap can be really tedious and boring. It's not something I would do unless I already suspected that the lens might be bad.

 

[Joshua_Lee]

Thanks for the links, I will check them out!