Tammy 18-250
Posted 28/08/2010 - 22:30
Link
According to Photome they are taken at 18mm focal length. Did you use the lens hood? If so I wonder if they have not got the compromise between 18 and 250 correct.
Barrie - Too Old To Die Young
https://pentaxphotogallery.com/artists/barrieforbes
https://www.flickr.com/photos/189482630@N03/
https://pentaxphotogallery.com/artists/barrieforbes
https://www.flickr.com/photos/189482630@N03/
Posted 28/08/2010 - 22:34
Link
LINK
Quote:
The quality of the images from the Tamron lens were similar to those from the Canon 17-85. At the widest setting, barrel distortion and vignetting are noticeable. Both lenses were sharp in the center, with softening at the edges. Edge quality improved with both lenses by closing down the aperture one or two stops. Distortion from the Tamron 18-250 was very low by 28mm. Vignetting, or darkening of the images at the corners, was reduced significant by closing down the aperture by one or two stops.
Quote:
The quality of the images from the Tamron lens were similar to those from the Canon 17-85. At the widest setting, barrel distortion and vignetting are noticeable. Both lenses were sharp in the center, with softening at the edges. Edge quality improved with both lenses by closing down the aperture one or two stops. Distortion from the Tamron 18-250 was very low by 28mm. Vignetting, or darkening of the images at the corners, was reduced significant by closing down the aperture by one or two stops.
Posted 28/08/2010 - 22:37
Link
Lens hood was on .It's not just at 18mm focal length it's on every one with a grey/whiteish sky.
I've always been taught [ by the Photomonk from those who remember him ] that if a hood is supplied then you use it .
I have some on the 40mm [ again with its wee hood on ] but there's nothing like this on those . It has to be admitted that the weather was NOT good
I've always been taught [ by the Photomonk from those who remember him ] that if a hood is supplied then you use it .
I have some on the 40mm [ again with its wee hood on ] but there's nothing like this on those . It has to be admitted that the weather was NOT good
let the education continue
proud owner of a couple of cameras and a few bits and bobs
proud owner of a couple of cameras and a few bits and bobs
Posted 28/08/2010 - 22:39
Link
Aaaah - thanks Mike I'll make a note of that for the next trip
let the education continue
proud owner of a couple of cameras and a few bits and bobs
proud owner of a couple of cameras and a few bits and bobs
Add Comment
To leave a comment - Log in to Pentax User or create a new account.
4141 posts
16 years
Glasgow
Am I correct in seeing slight vignetting in these pics ? Is there any way of avoiding this ?
It's not obvious if I have something other than slightly blown sky in the top corners .
1)
[IMG]http://i8.photobucket.com/albums/a41/Anhelyna/IMGP1476.jpg[/IMG]
2)
[IMG]http://i8.photobucket.com/albums/a41/Anhelyna/IMGP1474.jpg[/IMG]
3)
[IMG]http://i8.photobucket.com/albums/a41/Anhelyna/IMGP1429.jpg[/IMG]
proud owner of a couple of cameras and a few bits and bobs