machinery (impressum HDR)

Technical Remarks

Last updated: 2018-04-26

Metronome numbers

These are determined either by tapping into an OS X application such as “Subdivide”, or tapping into an iOS app such as “Pro Metronome” on an Apple iPad, or alternatively calculated from the time taken for a given number of beats — in either case looking for a section without too much rubato, and typically not the very beginning of a movement.


Unless noted otherwise, durations are without eventual applause, and possibly corrected for excess blank trails at the end (or at the beginning) — they may therefore deviate from the actual (CD or download) track duration.


Most metronome & timing tables are generated as MS Excel spreadsheets that I export to PDF and then convert into a suitable graphics format (typically PNG) — how I do the color coding in MS Excel is far too quirky to be explained here.

CD & Booklet Front Pages — Updated

For ripped CDs from my collection, CD & booklet front pages are typically scanned and processed through Adobe Photoshop using the following procedure:

  • scan at 1200 dpi (HP OfficeJet Pro 276dw MFP)
  • straightening & cropping
  • possible removing spots etc. / image repair
  • Gaussian blurring (“Filter” -> “Blur” -> “Gaussian Blur”, just enough to remove print pattern, typically with a radius of 3 – 4 pixels), possibly followed by selective sharpening (“Filter” -> “Sharpen” -> “Sharpen Edges”)
  • the Color gamut is expanded using “Image” -> “Image adjustments” -> “Curves”
  • scaling down to 150 dpi (final size around 700 x 700 pixels),
  • saving in high-quality JPEG format

Concert Photos — New

In most concert venues (i.e., with most organizers), taking photos during performances is strictly forbidden. Where this is the case, I (or a family member) may try taking shots during the applause only, or before the performance starts. This is typically done using an Apple iPhone (models 5s, 6, 6 plus, 6s, 7 plus, X). I strictly avoid using flashes, and with the bad lighting in most concert venues, such iPhone shots are very modest quality (unless it’s a concert at daylight). With such photos, I will only display small images.

Occasionally (where I know I will not run into trouble), I carry along my “real” camera, i.e., a Nikon D810 (2016 – 2017) or a Nikon D850 (starting January 2018). Especially the latter offers much higher quality in poor lighting conditions. I can sometimes also shoot during a performance (mostly just the encore), even series of shots. Again, I never use a flash in concerts. Very rarely I used a tripod. The lenses I use are one of the following:

  • Nikon AF-S Nikkor 70-200mm f/2.8G ED VR II
  • Sigma 35mm F1.4 DG HSM
  • Nikon AF-S Nikkor 16-35mm f/4G ED IF VR (rarely, exceptions only)

AboutSite PolicyGeneral Remarks | Impressum, Legal, TimelineAcknowledgements

Technical RemarksTypographical ConventionsWP Site Information


Leave a Reply

%d bloggers like this: