NEXT MEETING …    7:30pm   Thursday 23rd January 2020

Shuffell Trophy Round 3: Two PDIs, subject Open

…for Shuffell Round 3: 16th Jan Upload 2 PDIs (Subject: Open)
… for AV presentations: 23rd Jan – To complete Form via website and then Upload or Hand-in on named memory stick. or contact us

Member Western Counties Photographic Federation   §  Affiliated to Photographic Alliance of GB

Competition Admin

You can download to print and/or view our leaflet summarizing this year’s revised arrangements by CLICKING HERE

By the way, sorry if some of our jargon isn’t clear! We use PDI (Projected Digital Image) to mean jpg images that conform to our entry requirements which are simply those that fit into our 1600 pixels wide and 1200 pixels high maximum limits. We will have a pre-meeting workshop to explain all this at 6:45pm in the small committee room on our next club night, Thursday 26th September. Just turn up on the night and we hope to cover both PDIs and Print requirements.

[Note some clubs use the term DPI instead of PDI: we prefer PDI to prevent any confusion with “dots per inch”. (And for those expecting to be told to use a particular “dpi” such as 72 or 300, this value does not matter when used on our projector. If you are concerned set it to 300dpi.]

Even if you are not yet ready to enter any Prints or any PDIs, you are always welcome to have a go “to break the ice” or if you prefer, please just talk with Helen or Chris about the photos you might like to submit. There is no pressure to enter competitions (except perhaps for our light-hearted Ladies v Gents) but most people find entering rewarding and helps to have impartial feedback. Don’t worry if your early scores are at the lower end: we all do from time to time except for one or two extremely talented members!

As from September 2019, Shaftesbury Camera Club will be adopting the new PDI standard of 1600 x 1200 pixels that is being used by WCPF and many other clubs.  Fortunately the software we routinely use (Dicentra and Faststone) detects the projector native resolution and rescales on the fly to match.  This means a full 1600 x 1200 image will be rescaled downwards by exactly 10% to accommodate our 1920 x 1080 projector, i.e. the image will be presented as 1440 x 1080.


SCC has been invited by Blandford Forum CC to participate in a three club “Match-an Image” competition later this season. The last one of these was in November 2014 again hosted by Blandford where we came 3rd having won (… just) the year before: read our brief report here.

These notes are to help newer members to understand how this fun competition is run and to help them provide us with suitable images.

At the start of the evening, each club has to be prepared with 40 PDI’s loaded on their own laptop and projector. One club will then project one of their PDI’s as a “starter” image: the other two clubs then have a strict time limit of 30 seconds to select and project their “matching” image. The judge (who is often the victim of considerable good-natured banter) then has to award marks as follows:

  • The “starter” image automatically gets 1 mark
  • “Matching” images get 1 mark each if the judge agrees they match the starter
  • The judge awards a further 1 bonus mark to the best quality image from the starter and valid matches
  • If none are judged as matches, the starter gains a bonus of 1 mark

The three images used in each round cannot be used again in subsequent rounds. Each club takes it in turn to provide the “starter” image and there are a total of 30 rounds. Hence each club provides 10 starters and 20 “matches”, and will have 10 unused images at the end.

In addition to our laptop, projector and 40 PDIs, we will have our PDIs printed as contact sheet and clearly numbered to help make our rapid choice of matching images before the disqualifying 30 second time limit. Used images can be crossed through with a black pen. As a minimum on the night, we will need two members to choose the images, one to run the laptop and one to keep score. Additional members can help by challenging the unfortunate judge!

It should be clear that our 10 “starter” images need to be difficult for other clubs to find a “match” but our “follower” ones need to be general enough to match all sorts of others.

UPDATE May 2019: References to 1400×1050 changed to 1440×1080 to align the projection standard to the new Inter-club 1600×1200 pixel standards.  The no-input user-generated test image has been adjusted to facilitate easy alignment for both 16:9 and 4:3 formats using the full 1080 height.

UPDATE Nov 2018: Noted High contrast edges, e.g. trees against sky, were showing a halo similar to oversharpening.  Reduced BrillColour from 8 to 1, well below the as-delivered setting of 6.  Also reduce Brightness from 1 to -3 to respond to comments about overall brightness: still able to see 1% step patterns near 3% and 97%.

UPDATE Mar 2018: Noted Reds were dull & biased towards brown. Adjusted R hue and sat a touch, and increased BrillColour and Sharpness.  We also now have a test image and reference print from Marrutt.  Settings as at Nov 2015 except as amended in colour…

This projector is a 4200 Lumen 1920 x 1080 pixel high definition projector.  It has a x1.5 zoom lens that facilitates quick image resizing so that we can use the full 6 foot wide screen for either 1920×1080 (16:9) or 1440×1080 (4:3) projection.

REMOTE CONTROL Principal Keys…
(default bold underlined)
Key Function
Power (Red) Hit twice to turn off
Button below Power Audio Mute & Display Blank
#1     (Format) Native, 4:3, 16:9, Letterbox
#2   Menu (Blue) Open or close menu pop-up
#7   User1 Brightness   1
#8   User2 Contrast       0
#9   User3 Test pattern: None-Grid-White
#0  (*/*) (Green) Bright / Eco (quieter)
Laser (Orange)


The main settings “as delivered” and as we have currently set for PDI are tabulated below.

Important note!  Just because you’ve checked these using (say) HDMI as input, they won’t necessarily be right when using a different input source such as VGA!!!

Optoma EH415e Projector settings
As delivered Nov 15
Mar 18
Nov 18
Display mode Movie sRGB
Brightness 1 -3
Contrast 0
Sharpness 8  8:
now 10
Gamma Film Standard
BrillColour 6 6: 8
now 1
Colour Temp Standard
Colour Space  Auto RGB16-235 HDMI & Mac use RGB16-235
Noise reduction 1
Colour matching… HSG for Movie HSG for sRGB NB Varies by display mode
Matching Red -10 1 8 0 0 0:
now 3 2 0 
Matching Green 0 1 8 0 0 0
Matching Blue 0 1 8 0 0 0
Matching Cyan 0 1 8 -10 0 0
Matching Magenta 28 1 8 17 0 0
Matching Yellow 25 1 8 15 0 0
Matching White 0 -6 -4 RGB 0 -6 2
Format Auto Native
Edge mask 0
Zoom 0
Shift 0:0
V keystone 0
3D Off/off
User 1 (Key 7) Brightness Brightness
User 2 (Key 8) Source lock Contrast
User 3 (Key 9) Sleeptime Test Pattern
Brightness Mode (Key 0) Bright Eco
Dynamic Black Off Off

Aspect ratio & Zoom lens…

  • The native resolution is 1920 x 1080 pixels which is a Full HD 16:9 format.
  • If the projector is positioned with minimum zoom to fill our 6 foot screen, then the zoom can be increased until a 1440 x 1080 image also fills the screen.  Both Faststone and Dicentra detect the projector resolution and perform rescaling on the fly so can effectively project 1600 x 1200 images. [Note: 1440 & 1080 are exactly 90% of 1600 & 1200.]
  • The projector has been pre-loaded with a SCC test target so this, focussing and general alignment can all be completed before any video cables etc are attached.

Compatibility with Samsung laptop video chipset

  • The Samsung inbuilt display is (like the majority of medium cost laptops) limited to 1366 x 768 pixels so projecting the desktop simultaneously on both laptop and EH415e will not prove satisfactory.  There are two alternative options…
  • 1)  Only use the projector and disable the laptop display by using either “Windows key” + “P” or mouse right click on Desktop background to select Screen Resolution and choose Multiple Display = Show desktop only on 1.  The laptop should then drive the projector at its native 1920×1080 resolution.  Main disadvantage of this is that it is difficult to view the keyboard (e.g. scoring) in a darkened room.
  • 2) Use the dual display capabilities of the laptop video chipset by choosing Multiple Display = Extend these displays.  You can then check that laptop is “1” and the projector “2” using the Identify button: generally 2 is to the right of 1 but if this is inconvenient, you can drag and drop to swap the two screens over.  If a third screen appears, select it and then choose Remove this display from the drop-down list.
  • With dual displays, you can drag and drop programme windows using the conventional top bar of any window between the two screens.

Dicentra Dual screen facility

  • Recent updates to Dicentra have improved how it handles dual screen environments.  Version 4.6.107 now detects dual screen with two pop-ups asking for one to be dragged to the projector screen and one to be dragged to the laptop.  Note that some Dicentra pop-ups may appear on the projected image while others appear on the laptop.
  • When running a competition, it can be helpful to open an empty text document on the laptop display to provide some keyboard illumination.
  • As Dicentra has to be set up during the Competition Rules with the projected image size, unfortunately it is not then possible to properly preview or practice the competition on the laptop alone as about 12% is lost from both the top and bottom of the image – but you can at least check image order, titles etc.  As a work-around, there is an icon on the desktop PREVIEW DICENTRA COMPS that opens to give a shortcut to the internal Dicentra folders that with care can be  browsed as a slideshow.
  • For more details on dual screen and Dicentra, read an up-to-date User Manual (Chapter 10).

MAC HDMI Video Colour Spaces…     (added 11/1/16)

  • Our Windows PCs output RGB16-235 colour space for HDMI inputs as it recognises the projector as a monitor.
  • However, Macbooks apparently recognise any 1920×1080 HDMI device as a video product and accordingly default to a YCbCr colour space (the digital equivalent to YUV) which results in an unusable image.  Two options exist if this happens:-
  •    a) Use VGA cable
  •    b) Change the Colour Space on the projector under Menu/Image/Colour Space to either Auto or YUV

Dicentra Workflow for internal Competitions (E.g. Shuffell, PDI of the Year)
[Team (eg LvG) or Inter-Club Comps need a different workflow!]

NOTE! Dicentra has evolved a lot and now can handle rescaling on the fly so PDIs can be loaded into competitions at the 2019 standard of 1600×1200 pixels.

Status: 1st draft Dec 2015

1.  Dicentra Organiser Plus  – DOP  [One day may be integrated into Dicentra]
Rules/New  Create comp name e.g. “Shuffell Trophy PY2 Dec15”
Closing Date same as Comp Date
Images  2pp,  1400×1050 for new projector
Randomise Every Round
Files     Seq No_Image Title_Full Name
Variations    just ignore
Scoring   (ensure half mark is ticked!)

2. DOP  Process/Organize
Browse to Dropbox via Desktop
Hopefully there won’t be any wrongly named files, esp names with missing/extra spaces/etc!
This creates Folder “Comp Name OUTPUT” somewhere on Desktop with jpgs renamed as 01_Image Title.jpg organised into sub-folders by entrants full name: hence need for their names right!!!

Dicentra main programme [Rules should already be there]
Select comp from dropdown list
3.1 Setup/Load Entries…
Browse to “Comp Name OUTPUT” on Desktop, select any one entrant folder
Tick “Set All” & Select
3.2 Setup/Make Competition…
3.3 Test by… Competition/Run Comp   Ignore wrong screen size
If happy….
File/Reports/Printable Reports/Blank Scoresheet
Don’t Split into Rounds
Scoresheet is on Desktop as .rtf file

For Notes on using dual screen when projector connected, see Comp Admin on website.

SCC have been developing better ways to select images to represent our Club in external competitions.  The traditional method has been to appoint a small Selection Committee which rather isolates the rest of the club from both the selection process and the subsequent competition.  What we are now doing is to try to use the power of the internet to allow the whole membership to participate fully in the selection and to email us with their own personal votes.  These will then be processed by an automated spreadsheet to generate our list of print or PDI titles.  The first version of the spreadsheet allowed us to have up to 9 people selecting and we have stretched this to cater for up to 30 members.

The outline process is as follows:-

1) All candidate images (normally high-scoring ones from internal competitions during the previous 12 to 18 months) are numbered together with their scores, titles, and author, and these are stored in Dropbox.  An invitation containing a link to the Dropbox images is emailed to participating members.

2) The participating members then email the numbers of their selected images back to us.  We don’t need any order of preference, titles or anything else.  Just a list such as   6, 9, 14, 16, 17, 22, 38, 44, 45, 48 is perfect as we can enter these into our spreadsheet by copy and paste rather than having to retype.  (You can also ring us with your list if really necessary.)

It is important that members do not deliberately include or exclude their own or their partners images: all images should be fairly considered in the context of the competition and other candidate images.  Also be aware of the need not to exceed the maximum number of images from any one author.

3) The spreadsheet then computes the total votes and lists the images in descending order.  The adjudicator then checks the list (e.g. in case there are too many images from one author, or there are too many similar images) and makes any final adjustments before compiling the club’s official competition entry.

  If you wish to play with the spreadsheet (which is still being refined), you can download a copy by right clicking and saving this link… Multijudge Mk3_Blank_Oct14  .  It has been developed in Excel 2003 so should work on later versions.  As we use LibreOffice (the totally free alternative to MS Office) on the club laptop, we intend to create a version for this also.  The spreadsheet has three tabs at the bottom: one for entering votes, one for the results, and one with some notes and instructions.  Any comments are always welcome.


These files are used to create competition print labels in association with Word (tested on v 2003).

Crib list for labels for print competition

label Print of Y 13-14

Pof Y prints

UPDATE 2019: The Club standard for internal PDI competitions has been increased to 1600 pixels wide x 1200 pixels high as from September 2019. Sizes for external competitions may vary from these and we will address these on an individual basis.

Note: Updated file naming guidance Dec 2013.  Other updates Feb & Aug 2015.

We try to make entering our internal competitions as easy as possible as we know it can be daunting if you haven’t submitted pictures before (and of course not every member wishes to).  However it can be good fun and help you to develop your own particular style of photography so this is a note about our three main internal competitions, a how-to on preparing and submitting entries, and the judging. Continue reading

Quick links…

Competition Entries (members only)
for Prints and PDIs

10×20 & A-V Entries (members only)


Photo Venues


Our Noticeboard on the web


Pixels Our Virtual Workshop




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Local Photography Classes
Spring 2020

Grosvenor Arms, Shaftesbury
01747 858016
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