Hasselblad HTS 1.5 Manual
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Hasselblad HTS 1.5 Manual

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HTS 1.5
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Summary of Contents for Hasselblad HTS 1.5

  • Page 1 HTS 1.5 HTS 1.5...

  • Page 3: Table Of Contents

    Contents Before you start Introduction Basic explanation of tilt Basic explanation of shift Getting started Tilt – in practice Shift – in practice Creative opportunities Appendix General points Scheimpflug principle Specifications Terminology...

  • Page 4: Before You Start

    Please also check that your version of Phocus has the updated digital lens corrections for use with the HTS adapter, namely the following (or later versions):   •  Phocus 1.1.3 Mac   •  Phocus 1.0.2 Windows The latest version of Hasselblad’s camera firmware and Phocus software can be downloaded from: http://www.hasselblad.com/service--support/technical-support/software-downloads.aspx...
  • Page 5 The HTS 1.5 adapter is mounted between the lens and the cam- image circle inside the camera. era body and, by way of the databus connections, automatically conveys data to ensure the optimum in convenience and accu- racy of exposure.
  • Page 6 Compatibility The HTS 1.5 was specifically designed for use with the HCD The integral converter in the HTS 1.5 alters the angle of view 4/28mm and HC 2.8/80mm lenses, and these should be seen (in effect, extending the focal length) of each lens and causes as the primary choice for maximum performance.
  • Page 7 TILT – a basic explanation A classic problem in close-up product photography and similar areas, is the lack of depth of field. Using tilt can solve many such problems as well as offering creative solutions.

  • Page 8: Basic Explanation Of Tilt

    The lens is normally set perpendicular to the image plane and the HTS 1.5 and be able to exploit its potential to the therefore is effectively in parallel with the sensor as well. This optimum.
  • Page 9 Camera angle and lens movement TILT Fig. 1 In this diagram, a focus setting has been made for the yellow object at distance A. This in turn produces a specific ‘lens to sensor’ distance B. The relationship between these two distances is reciprocal;...
  • Page 10 Inside the camera Result Fig. 1 Fig. 1 Only the yellow objects are sharp Fig. 2 Fig. 2 Fig. 3 Fig. 3 All the objects are now much sharper...
  • Page 11 Fig. 4 In this diagram, the lens is focused on the yellow ob- jects. At the widest aperture only the yellow objects are covered by the depth of field. This situation illustrates that producing sharpness in certain parts of the subject can produce unsharpness in other parts of the image.
  • Page 12 Fig. 5 In this diagram, the lens is focused on the yellow objects. At the widest aperture only the yellow objects are covered by the depth of field. When the lens is tilted, the plane of the depth of field tilts. The left side of the blue object is now sharp and the right side unsharp.

  • Page 13: Basic Explanation Of Shift

    SHIFT – a basic explanation A classic problem in architectural work and similar is the preservation of parallel elements in the subject when the camera angle has to be moved. Shift also allows the creation of ‘stitched’ panoramas.
  • Page 14 However, the integral case if the camera was just pointed upwards. converter in the HTS 1.5 enlarges the image circle. This allows parts of the image to be projected outside of the sensor area.
  • Page 15 Camera angle and lens movement SHIFT Fig. 6 Camera is levelled and aimed directly at subject. No lens movement. Original scene continued overleaf  Fig. 7 Camera aimed up at subject. No lens movement. continued overleaf  Fig. 8 Camera is levelled and aimed directly at subject. Lens shifted upwards.
  • Page 16 Result Inside the camera Fig. 6 Fig. 6 The enlarged image circle is projected onto the sen- sor (grey rectangle). Part of the image lies outside the sensor. (In reality the projected image would be inverted) Fig. 7 Fig. 7 The top of the blue object is now projected onto the sensor but the verticals...

  • Page 18: Getting Started

    Getting Started The HTS 1.5 is very simple to use. The high level of integration within the system makes it almost seamless in operation.
  • Page 19 12. Mount extender Attaching and removing The HTS 1.5 is attached to the camera in the same manner as mounting a lens, matching the alignment index 9 with the index on the camera body. The lens is mounted onto the adapter in the same manner, matching the alignment index 1.
  • Page 20 (as takes place during the case of architectural/documentary photography or similar it tilting) but the camera assesses the data from the HTS 1.5 and would also be advisable to level the camera in all planes before makes the necessary compensation automatically.
  • Page 21 Approach Whether solving a problem or creating an effect, a simple initial analysis of the situation is advisable, particularly in regard to tilt. The key with tilt is to establish where the plane of focus already is in the set-up and subject, and where you want it to be. Only then can you make the appropriate corresponding movement.
  • Page 22 Make an HTS profile You can make a special profile that lets the two most often used actions (for example) in this situation - Stop Down and Mir- ror Up - be more easily accessible by reassigning the AE-L and MENU ISO / WB User buttons on the rear of the grip.

  • Page 23: Tilt - In Practice

    Tilt – in practice With some imagination, tilt can both solve a number of problems and also create a number of new directions.
  • Page 24 With regard to the concept of depth of field, however, you are advised to read a fuller explanation under ‘Terminology’ to gain a better understanding of what to expect from the HTS 1.5 and how to exploit it to the fullest.
  • Page 25 HTS, could only have produced a compromise in sharpness. Tilting in combination with the H lens/Phocus integral lens cor- rection has produced a superb result. HC80 + HTS 1.5 at f/11, 10 degrees tilt...
  • Page 26 The full image HCD28 + HTS 1.5 at f/11 No lens tilt produces some lack of sharpness in the foreground and background, partly due to insufficient depth of field. Lens tilted a few degrees to the right produces an image with perfect sharpness from the foreground to the back- ground.

  • Page 27: Shift - In Practice

    Shift – in practice When the subject demands correct reproduction without undue distortion, shift can often be used to provide the answer. In addition, shift allows the opportunity to produce tremendous panoramas that are quick and easy to produce.
  • Page 28 Stitching is the practice of digitally merging several images of the camera (image/sensor plane) to the subject. Altering together seamlessly. By shifting the lens, the HTS 1.5 provides the angle often solves one problem only to create another. The the opportunity of altering the final image format by expanding example here illustrates a common situation.
  • Page 29 rtical lines in needs to be rtical lines in ct. Tilting the needs to be produce con- ct. Tilting the The camera is levelled to pro- But by shifting produce con- duce non-converging verticals image plane, But by shifting but the top of the building the view with- image plane, falls outside the sensor area.
  • Page 30 Horizontal stitching Vertical stitching 18 mm 18 mm 18 mm 18 mm Final image size: H3D II-50 — 87 Mpixels H3D II-39 — 68 Mpixels Final image size: H3D II-50 — 99 Mpixels H3D II-39 — 77 Mpixels...
  • Page 31 HCD28 and HTS 1.5 — The three images above were taken with shift and have been merged (horizontally) into one image using Adobe Photoshop CS3 (Photomerge). Even at 100% it is almost impossible to see where the separate files have been stitched together.

  • Page 32: Creative Opportunities

    Creative opportunities Both tilt and shift can be used, singly or together, to create creative solutions to problems or to create creative alterna- tives for a fresher approach.

  • Page 33: Creative Opportunities

    10 degrees up or down. Tilt and shift can be combined according to the diagram. The HTS 1.5 can provide many opportunities to improve a General normal shot. The whole idea of being able to manipulate where...
  • Page 34 HC80, Extension ring and HTS 1.5 — Focus was on the ring together with a very wide aperture. In the top right hand corner of the images you can compare how the specular highlights are recorded according to tilt. •  In A they are out of focus. ...
  • Page 35 In this close up of gift foil wrap, you can just discern the direction of the plane of sharp focus and also the depth of field, chang- ing according to the direction of tilt. Essentially, the same focus, aperture setting and lighting were used for all images; only the tilt (horizontal) setting was altered.

  • Page 36: Appendix

    Appendix General points Scheimpflug principle Specifications Terminology...

  • Page 37: General Points

    There are various practical points that should be noted when * Plan carefully when shooting interiors, for example, if you using the HTS 1.5 that are not necessarily specific to the unit. intend to use stitching and HDR, remembering to check for overlapping details and areas.

  • Page 38: Scheimpflug Principle

    Scheimpflug principle In this illustration, the sensor plane and lens plane are par- allel producing a subject plane that is also parallel. At the widest aperture the depth of field is very restricted. The yellow objects are in focus as they are on the same plane, along with some of the red object.
  • Page 39 Here, the Scheimpflug principle has been applied to deter- mine optimum angle of tilt. A line is drawn in parallel with the image plane and an- other drawn in parallel with the desired subject plane. An- other line drawn from the crossing point shows the plane that the lens should be tilted to align with.

  • Page 40: Specifications

    In front of the image plane (at infinity focus setting). The entrance pupil position is the correct position of the axis hC 50 of rotation when making a panorama image by combining indi- vidual images of a scene. hC 80 hC 100 www.hasselblad.com...
  • Page 41 The hTs 1.5 adapter is compatible with all h system cameras. support for digital image corrections only with hasselblad Cf The HTS 1.5 adapter is compatible with all H System cameras. Support for digital image corrections only with Hasselblad CF card based digital capture products.
  • Page 42 Vertical dashed line @ infinity Image position (mm) Image position (mm) show the basic sensor MTF performance format (36×.48 mm). f/5.6 f/11 10, 20 and 40 lp/mm dashed lines in the diagrams shows the The diagram shows lens performance over the tangetial performance.

  • Page 43: Faq

    I was shooting products close-up. The foreground object wasn’t when using extension tubes increases the chances of blocking sharp so I tilted the lens as suggested. It became much sharper some of the light rays. Using a camera with a smaller sensor or with a film magazine but the top of it became unsharp! How can that be? What did I do wrong? will also have an effect because the capture area differs in size...

  • Page 44: Terminology

    The integral converter in the HTS 1.5 enlarges circumstances. the image circle enough to allow the lens to be shifted from its central position while still projecting an image on the sensor.
  • Page 45 The information in this manual is furnished for informational use only, is subject to change without notice, and should not be con- strued as a commitment by Victor Hasselblad AB & Hasselblad A/S. The text in this manual cannot be reprinted or reused without the express permission of Victor Hasselblad AB &...
  • Page 46 Hasselblad A/S Hejrevej 30, DK - 2400 Copenhagen, Denmark Victor Hasselblad AB Box 220, SE - 401 23 Göteborg, Sweden HTS 1.5 - English v.2.3...

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