Birmingham New Street and Brettell Road in P4

Post pictures and information about your own personal model railway layout that is under construction. Keep members up-to-date with what you are doing and discuss problems that you are having.
Jim S-W
Posts: 1473
Joined: Fri Dec 04, 2009 5:38 pm

Re: Birmingham New Street and Brettell Road in P4

Post by Jim S-W »

Bufferstop wrote: Sun May 19, 2024 5:09 pm Jim, your low light scenes have all the atmosphere of damp winter evenings in the Black Country, It seems ridiculous that they make me nostalgic for those times, that I last endured almost 70 years ago. Brilliant, aar kid!
Thanks thats really kind. I guess I'm doing something right if it makes you nostalgic for a place that never existed and I never knew myself :)
Jim S-W
Posts: 1473
Joined: Fri Dec 04, 2009 5:38 pm

Re: Birmingham New Street and Brettell Road in P4

Post by Jim S-W »

This weekend I was helping Tim at Railex (helping in the loosest term - I was there anyway!) and had a very interesting chat with a chap about lighting on layouts. He explained that lighting is what he does and he was obviously somewhat of an authority on the subject.

Image
Anyway the subject of this image came up, Apologies for posting it again, I get people are probably sick of seeing it but I have added a bit of rain as some people asked for it.  He explained that sodium lighting on a scale of colour gives a very high spike in the yellow range and doesn't output any other colours. For this image to have the colours it does it would need a white light source, I cant say its the moon because its raining!  It actually does have a white light source as I have a string of dim-able LEDs on the wall of the shed that I use to infill my night pictures.  He very obviously knew exactly what he was on about!  People may have noticed that at night we sometimes see in black and white.  It was something I was already aware about on a very basic level.  Cameras are much better at picking up colour in low light than the human eye as anyone who recently saw and photographed the northern lights probably noticed.

So I could say that the above image has a certain degree of artistic licence to it.  Or at least I could if it was deliberate but the reality is it wasn't.  I hate it when people throw the term artistic licence around to justify missing something or some sort of mistake after its been pointed out.  It's OK to miss things, just don't try and claim it was deliberate after the event.

Image
So by taking all of the colour out except yellow (and putting some back in for the lorry lights and inside the phone box) we have an image that more accurately depicts what you would see if you were really standing on a rain sodden bridge in the Black Country at the end of the 1950's.  Two questions now though, The first is which of the two is actually the more pleasing, or nicer image? and the second is anyone actually bothered?
aleopardstail
Posts: 261
Joined: Thu Apr 29, 2021 9:48 pm

Re: Birmingham New Street and Brettell Road in P4

Post by aleopardstail »

second image doesn't look so much like it was taken with a modern digital camera and is far more atmospheric.

I suspect though for low pressure sodium its nowhere near orange enough, its very hard to emphasise enough just how monochromatic the light they spit out is. modification is borderline greyscale it then add an orange tint, which is realistic but also rubbish

the only real way to light such is likely having actual monochromatic street lights at least (LEDs are pretty good at this), and then other whiter spot sources of lighting (room lights, headlights etc) with a few hints of red her and there (tail lights, brake lamps, my sister in laws lounge etc)

and then at a guess quite a long exposure as it will all be so flipping dark.

as it is the pics you have work fine
Bigmet
Posts: 10301
Joined: Tue Aug 14, 2007 2:19 pm

Re: Birmingham New Street and Brettell Road in P4

Post by Bigmet »

The second image is best, especially with my spectacles off; that has the blurry effect of rain in the eyes on a dark night with relatively poor street lighting.

I could cheerfully drone on for hours about monochromatic and nearly so light sources...
User avatar
Bufferstop
Posts: 13849
Joined: Thu Mar 11, 2010 12:06 pm
Location: Bottom end of N. Warks line

Re: Birmingham New Street and Brettell Road in P4

Post by Bufferstop »

Specs on or off can make a big difference in night vision. If the image on your retina is shifted from the point at which you specs would deliver it, then some or all of the colour receptors may be missed leaving you with a monochrome image.
Growing old, can't avoid it. Growing up, forget it!
My Layout, My Workbench Blog and My Opinions
Jim S-W
Posts: 1473
Joined: Fri Dec 04, 2009 5:38 pm

Re: Birmingham New Street and Brettell Road in P4

Post by Jim S-W »

Scalefour Crewe was an excellent show in my opinion and feedback from my operators was that they all enjoyed themselves (thanks for your help guys).  Thanks to the show organisers for inviting us. The layout seemed well received and many people were kind enough to say nice things about it.  We seemed to be quite successful in holding people attention throughout the weekend.

As with any outing theres aways a period of reflection on how the show went. The layout seemed to fight us a little in the morning but settled down.  The main issue being the cassettes were causing a few problems.

Image
There were 2 areas with the cassettes that need addressing.  Area A is that any stock that wasn't on the rails would strike the edge of the end stop supports and bring the whole train to a halt.  It's unrealistic to think that everything on a cassette will always be on the track 100% of the time as the cassettes are moved around.  Thats the point of them after all.

Area B is an easy fix.  Theres a bit of wire that holds the connecting rail (which is loose at the end) in line with the rail on the cassette and agains the guide rail.  These bits of wire were too straight meaning the joining rail could go the wrong side and all the stock would fall off.  A little more of an angle to the wire will solve that.

Image
First approach to fix problem A was to shape the end supports so that stock doesn't stop when it hits it.  A few trials showed this to be effective but it merely gets the stock past the ends and it still stays off the track.  Plan b was to make a re-railer from 30 thou plasticard so that any errant stock is pushed back on to the track. The advantage of this is that I don't need to reshape the end supports at all as the stock is on the track as it runs off the cassette.  This is just a rough proof of concept of course but if I fit one to the end of every cassette, as wagons will need to run of their own cassette and through the loco cassette that gives 3 opportunities to re-rail any rogue wagons and if they are still off after all that then they deserve to go back in the box for attention back home!

https://youtu.be/7ZT-ChpuJWM?si=mAV1slyvhjEtkqPK

Above is a little test video. The brake van is running along the edge of the cassette before the join.

Aside from the usual small stock of wagons that need attention either through failures or just a general refusal on their part to play nicely we had a few issues taking stuff in and out of the yard. There were also a few clunks when running through the slip which is a dead giveaway that something is not quite right somewhere.  So on returning home and when I had just 2 boards up, allowing me better access to the slip this has been investigated, tweaked and one of the check rails replaced.

https://youtu.be/F9fvC-bCssc?si=vKtAMgE_5vPTJRrW

A Bachmann brake van (straight wheel swap, no compensation) does the testing.
Post Reply