This observation was also confirmed to us by customers. The only caveat in general: Unfortunately, however, we had to observe a certain degree of variation in optical performance between samples of the same type of lens in the past. This additional freedom resulted in much more flexible use of such lenses as the Nikon lenses with their relatively small lens mount diameter. Fortunately, Canon went the road of a large diameter mount right in the beginning. The ALPA photographic platform proved to be even on the smallest camera, the ALPA 12 TC, more than capable of combining a 100 MP digital back and tilt/shift lenses from Canon.
Nevertheless, three shots (middle unadjusted, left, right) allow panoramas with a virtual sensor of 40 x 76 mm and around 16,500 x 8,600 pixels or 142 MP to be realized. This darkening of the corners is due to the low rear lens group, which vignettes especially at longer focal lengths on the own tube.
During shifting, however, unintentional mechanical vignetting may occur as a result of the lens construction. The 135 mm lens proved to be demanding as some experimenting was necessary to make it fit.Īs the images show, a particular movement beyond the intended image circle is possible. The stitching process, including any parallax correction, was fully automated in Photoshop CC and the results appear to be appealing. However, this is likely to be relatively unobtrusive at longer focal lengths. Without compensation of the displaced entrance pupil, a possible stereoscopic error may remain. All lenses work on the ALPA 12 FPS with Lens Module CAN or on each ALPA 12 with Lens Module and ALPA 12 Silex control unit.ĭue to the construction, the front element is shifted during the adjustment. Particularly noteworthy is the astonishingly low sensitivity to scattered light.
#Zoomify modules full
ALPA 12 FPS With Full Line Up Canon TS-E 17, 24, 50, 90, 135 mmĬanon lenses are very well manufactured and feature an excellent imaging performance. These are demo lenses from Canon Switzerland and therefore not explicitly selected. All details, including the sensor format and various image circles, have been plotted on it. The sample images can be viewed via Zoomify or downloaded in full resolution as JPG and PDF. The result was a stitched panorama of 16,500 pixels native length in Photoshop, merged from the single files. We have used the new optics on an ALPA with 100MP digital back in a full adjustment of 12 mm left/right to demonstrate the possibilities and limits. In December, Canon Switzerland kindly provided us with their first demo lenses. The line-up has become very grown-up with 17, 24, 50, 90, 135 mm.
#Zoomify modules plus
As a result, ALPA FPS customers used such combinations of Canon TS-E lenses and any digital back since the FPS introduction in 2012.ĭue to the introduction of the "electronic shutter" for various digital backs (Phase One IQ3 100, Hasselblad H6D-100c, Sinar S30|45, etc.), these lenses can now show their abilities on any classic ALPA plus ALPA Silex control unit. Since the introduction of ALPA 12 FPS (2012), ALPA has supported the Canon protocol concerning these unique lenses. The usable image circles of these lenses have a minimum of 65/70 mm. Expected for quite some time, Canon now offers a new 50, 90, and 135 mm lens with the red ring as exclusive lenses.
#Zoomify modules professional
Only the extreme wide-angle lenses TS-E 17/4.0L and TS-E 24/3.5L (now Mark II) were available as professional L-optics. Canon's TS-E lenses are designed for this task with the ability to perform tilt and Shift in some combinations. Tilt and Shift are still special applications in the "35mm" range.
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