Hi Everyone, I am looking at purchasing the TSE 90mm for shooting architecture details with and was looking for feedback on the sharpness, shift movement fall-off of this lens on 21Mp sensors. Does it produce good results at that resolution?
The lens is generally pretty sharp at f/2.8, but gets significantly sharper as it is stopped down, with the f/5.6 - f/8 images being right up there with the resolution of a 21mp sensor.
I haven't used my copy to do much shooting with shift, so can't speak to the sharpness in the off-centre shifted image corners, but with max tilt (which tends to use the outside of the image frame on the closer tilted edge-of-frame), I've not noticed any significant fall-off in sharpness once the lens is stopped down a bit. (I generally think of f/2.8 as a focusing aperture, and f/5.6 and down as shooting apertures.)
The lens does have more purple fringing and out-of-focus colour blur (longitudinal CA) than the 100 Macro's, but it's better in those respects than the 85L.
One note is that it isn't the highest contrast lens that Canon sells, as it was first released in the early 90's and doesn't have either the latest glass/optical designs or the newest coatings which have been optimized for high contrast. That said, it's pretty easy to compensate with a slight contrast or blacks adjustment to the image and make images with the lens that are impossible with any other lens in Canon's line-up.
OceanView wrote:
90mm is not wide enough for architecture.
You might want to consider the other focal lengths.
You should read the reviews here.
Umm...I think I know what is required for architectural photography as that is all I do for a living. Check my profile for the lenses I have. The 90mm would be excellent for shooting detail images. I just want to know if it could handel the job on the higher sensors.
davidrwilliams wrote:
For details of architecture, it would be superb.
The lens is generally pretty sharp at f/2.8, but gets significantly sharper as it is stopped down, with the f/5.6 - f/8 images being right up there with the resolution of a 21mp sensor.
I haven't used my copy to do much shooting with shift, so can't speak to the sharpness in the off-centre shifted image corners, but with max tilt (which tends to use the outside of the image frame on the closer tilted edge-of-frame), I've not noticed any significant fall-off in sharpness once the lens is stopped down a bit. (I generally think of f/2.8 as a focusing aperture, and f/5.6 and down as shooting apertures.)
The lens does have more purple fringing and out-of-focus colour blur (longitudinal CA) than the 100 Macro's, but it's better in those respects than the 85L.
One note is that it isn't the highest contrast lens that Canon sells, as it was first released in the early 90's and doesn't have either the latest glass/optical designs or the newest coatings which have been optimized for high contrast. That said, it's pretty easy to compensate with a slight contrast or blacks adjustment to the image and make images with the lens that are impossible with any other lens in Canon's line-up.
yes thanks for some input...The f2.8 aperture is not really an issue for me as I shoot between f8 and f11, I guess I could always put a polarisor to help with the contrast. I do lots of big shift movements on my lenses so I do not want too much vignetting. Does your copy have much pin cushion distortion or is it nice and straight?
I use the 90 T/S for a lot of stitched copies of paintings to get larger files and see no distortion or falloff at all even at full shift. It's a superb lens and completely up to 21mp resolution requirements. This lens will suit you just fine.
