Tamron sample pics - dodgy lens??
Tamron sample pics - dodgy lens??
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Discussion

cannedheat

Original Poster:

953 posts

306 months

Sunday 22nd April 2007
quotequote all
I've had my Tamron 28-75 for quite a while now but recently I've not been totally happy with the images it's been producing. I sent it off a couple of weeks ago to Intro2020 to be looked at and they changed a few bit on it but I'm still not sure it's spot on.

Below are a couple of samples with 100% crop of each one. What do people think? Are they a bit soft?



f4.5 1/1250



f4.5 1/1000

V6GTO

11,579 posts

273 months

Sunday 22nd April 2007
quotequote all
It depends...

I've got a Canon 1D mark II N yet I need to apply unsharp mask to every shot it produces. Why? Because I have the in-camera sharpening turned off so no sharpening artifacts are introduced, the Photoshop software is much more sophisticated so it gets the task. I think the second shot proves the lens is sharp.

I'd guess, but could be very wrong, that those shots would look fine after a trip to PS.

Martin.


Edited by V6GTO on Sunday 22 April 15:03

Andy M

3,755 posts

290 months

Sunday 22nd April 2007
quotequote all
You're shooting at f4.5 (the lens' maximum aperture?), so it will be soft. Shoot again at f8+ (pref f11 - f13) and you should see better results.

cannedheat

Original Poster:

953 posts

306 months

Monday 23rd April 2007
quotequote all
Lens opens up to f2.8.

I guess I'm comparing it to my new 70-200 F4L IS lens and that baby is SHARP!!



Edited by cannedheat on Monday 23 April 18:33

trackcar

6,453 posts

257 months

Monday 23rd April 2007
quotequote all
I dont understand this idea of using a program to sharpen an image. Surely the sharpest truest image is one where the lens has good properties and the image capture device in teh camera records that faithfully .. can you get any better than that?

Using a program to sharpen an image after the event sounds like using a graphic equaliser to change the sound of a flawed sound system to me.

The pics in question look very very soft and that can't be right can it?

poah

2,142 posts

259 months

Monday 23rd April 2007
quotequote all

images that digital cameras produce lack sharpness and contrast due to the technology. it can't be helped


trackcar said:
I dont understand this idea of using a program to sharpen an image. Surely the sharpest truest image is one where the lens has good properties and the image capture device in teh camera records that faithfully .. can you get any better than that?

Using a program to sharpen an image after the event sounds like using a graphic equaliser to change the sound of a flawed sound system to me.

The pics in question look very very soft and that can't be right can it?