Tamron 28-300 VC not true 300mm? Owner please clarify

[RayDream]

Hey, read some hk news on this lens is not 'true 300mm'

http://dcfever.com/reviews/readrevie...d=312&id=18449

Some owner of this lens, care to test it with other 300mm lens?

Thanks!

[eugene83]

Originally Posted by RayDream Hey, read some hk news on this lens is not 'true 300mm' http://dcfever.com/reviews/readrevie...d=312&id=18449 Some owner of this lens, care to test it with other 300mm lens? Thanks!

sorry cannot read chinese.... but with u mean by not true 300mm?

[ExplorerZ]

it is usual for the focal length to be reduced when focusing on near subject due to internal shifting of the glass elements on such super zoom lens.

[RayDream]

Originally Posted by eugene83 sorry cannot read chinese.... but with u mean by not true 300mm?

What they claim is that it seems shorter than 200mm.

[eugene83]

hmmm... that i not sure need to test it, as we are clarifying thing here i got something to clarify too. hope u dun mind pics i took with this lens look blur even i focus on a subject and later zoom in to see how sharp it is. hope other user can comment on that, RayDream do the article talked anything abt that?

[calebk]

Originally Posted by eugene83 hmmm... that i not sure need to test it, as we are clarifying thing here i got something to clarify too. hope u dun mind pics i took with this lens look blur even i focus on a subject and later zoom in to see how sharp it is. hope other user can comment on that, RayDream do the article talked anything abt that?

Zoom in meaning on your camera screen?

[ExplorerZ]

Originally Posted by eugene83 hmmm... that i not sure need to test it, as we are clarifying thing here i got something to clarify too. hope u dun mind pics i took with this lens look blur even i focus on a subject and later zoom in to see how sharp it is. hope other user can comment on that, RayDream do the article talked anything abt that?

blur could be due to many reason, not only optical problem. probably want to post a pic with exif

[eugene83]

Originally Posted by calebk Zoom in meaning on your camera screen?

calebk not only in cam but already in photoshop when i zoom to 1:1

[eugene83]

Originally Posted by ExplorerZ blur could be due to many reason, not only optical problem. probably want to post a pic with exif

how to u get the exif data?

[calebk]

Originally Posted by eugene83 calebk not only in cam but already in photoshop when i zoom to 1:1

If you are expecting to see phenomenal sharpness at 100%, I am sorry to disappoint you. It doesn't happen, almost all the time. Let's not forget we're talking about a superzoom here, not even a top-of-the-range prime lens.