Carl Zeiss Sonnar T* 2.8/135 C/Y
My usage
...
Image quality
...
Sharpness and Contrast
Based on photos I have taken I have no reason to doubt that the measured MTF charts would
not be as Zeiss has them measured.
According to Zeiss (underline parts different than in Canon's MTFs): "The Modulation
Transfer (MTF) as a function of image height (u) and slit orientation (sagittal, tangential)
has been measured with white light at spatial frequencies of R = 10, 20 and 40
cycles/mm."
Bokeh
Wide open - subjective
Closed down - subjective
highlight shapes - in corners "cateye" or not
highlight shapes - is the highlight circle having strong edges or soft edges
Lens flare
Backlight
Nightphotos on city => strong lights
Vignetting and distortion
...
Microcontrast
Textures etc.
Handling and usage
Focusing from infinity to 1.6 meter is about XXX degrees rotation.
XXX subjective description of manual focus resistance XXX.
XXX Manual focusing is very accurate and it's very easy to achieve accurate focus with live view.
Aperture can be selected 1 stop intervals. When using viewfinder and manually stopping
down it's easy to calculate "clicks" from wide open to determinen the aperture into
which lens is stopped down.
XXX subjective feeling of aperture adjustment if any XXX
XXX subjective description of focus ring width and usage with gloves if relevant XXX
XXX subjective description of lens hood if applicable - physical and flare protection XXX
XXX subjective description of lens cap when lens hood is used XXX
XXX Polarized usage with hood if applicable XXX
XXX Lens hood effectiveness with filters XXX
Build quality and basics
Build quality is as good as I could imagine, from different planet than Canon lenses.
Lens dimensions with C/Y to EOS adapter and lens caps are:
diameter 68.5mm, length 93+XXXmm, weight 585+XXXg.
This lens isn't internal focusing and therefore extends when focused closer. Lens extends
about XXXmm when focused to minimum focus distance 1.6m. Lens uses filter size of 55mm like
most of "slow" Contax lenses.
Minimum aperture is f/22.
Aperture has XXX blades and aperture remains XXX very round even at f/22 XXX. Lens has 5
elements which are in 4 groups. Actual focal length is 134.1mm. Minimum focus distance
is 1.6m, which results 0.08x magnification and full frame (36mm x 24mm) coverage
of 430mm x 286mm. Magnification is calculated based on focal length and minimum
focus distance.
Summary
Pros
+
+
+
+
Cons
-
-
-
-
See photos
in my picturebank taken with this lens.
PanoramasPanorama ToolsPanorama Tools (Mirror)
Panorama Tools
Panorama Tools (Mirror)
PTGui
ePaperpress insructions for Panorama Tools
ePaperpress insructions for Panorama Tools
Caldwell photographic - Correction distorsion and color fringing
Correction distorsion and color fringing
Caldwell photographic
Max Lyons - PTAssembler tutorial
Big Ben's Panorama tutorial
John Houghton PTGui tutorial
panoguide.com
Taking panorama picturesDIY Pan/Tilt-head
Home Built Panorama Head
Jasper-Engineering: Pano head
Big Ben's panorama tutorial
10D tutorial (8mm Sigma lens)
Kaidan - Kiwi-VL panorama head
Panoguide - Setting up to shoot panorama
Canon D30 and 15mm fisheye
Photo.net - Fisheye to rectlinear conversion
Luminous Landscape - Imagealign
AIM-DTP
SharpeningOutback photo - Edge Sharpening
Luminous Landscape - High pass sharpenign
Exposure / Dynamic rangeLuminous Landscape - Blended exposures
Luminous Landscape - Digital split neutral density filter
Luminous Landscape - Local Contrast Enchancement
Luminous Landscape - Hybrid conversion
AIM: The Linear RAW Workflow
ColorLuminous Landscape - Making better Black & White photos
Luminous Landscape - Instant PhotoShop
AIM-DTP - Color Dither Gamma (how to adjust gamma for monitor)
High Dynamic Range (HDR)Naturescape's HDR tutorial
Pictures of Carl Zeiss Sonnar T* 2.8/100 C/Y
Lens extends when focused
Distance from EOS lens mount (including adapter) to end of the hood is XXXmm at infinity
and XXXmm at minimum focusing distance.
Front/side projection
Made in Germany.
|
