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Author Topic: Wrenton  (Read 12952 times)

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Online Innovationgame

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Re: Wrenton
« Reply #315 on: November 20, 2017, 06:36:40 am »
I've enlarged the image and I can't see any sign of a double image anywhere.  It looks absolutely fine.
With kind regards
Laurence

Offline daveg

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Re: Wrenton
« Reply #316 on: November 20, 2017, 06:43:36 am »
Nice picture and the quality is certainly more than acceptable.

Handy info though on the mirror options.

Dave G

Offline Bealman

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Re: Wrenton
« Reply #317 on: November 20, 2017, 06:47:13 am »
Yep, same here. Looks as good as all the other excellent pics to me.  :thumbsup:
Vision over visibility. Bono, U2.

Online JohnN

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Re: Wrenton
« Reply #318 on: November 20, 2017, 09:44:34 am »
Exquisite work Roger. They look so lifelike its a credit to your modelling and photographic skills. A real please to view.  :thumbsup:

Offline pape_timmo

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Re: Wrenton
« Reply #319 on: November 20, 2017, 06:53:32 pm »
If you hadnít mentioned the double image and Iíd zoomed in to see it, I certainly wouldnít have found it, let alone noticed. Excellent work and brilliant photography.

Cheers, Timmo

Offline Mito

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Re: Wrenton
« Reply #320 on: November 20, 2017, 09:08:30 pm »
An excellent and ingenious solution. As above the double image is caused by the internal reflection of the mirror. Do you focus manually?  I read somewhere that if the camera focuses automatically it can focus on the mirror not the image.
You know you're getting older when your mind makes commitments your body can't meet.

Offline rogerdB

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Re: Wrenton
« Reply #321 on: November 20, 2017, 10:18:13 pm »
Thanks for all the comments and information. It seems that the result is acceptable so when I have time I'll try some more pics with my little black box as it is, rather than hunting for alternative mirrors.

I think the star diagonals would cause vignetting. My box has that problem, but only at the wide angle end of the zoom. Unfortunately it's the wide angle settings that are most often needed!

It is necessary to use manual focus, but I use focus stacking (which I mention here: http://www.ngaugeforum.co.uk/SMFN/index.php?topic=38682.msg473396#msg473396) and my camera doesn't do that automatically. So I have to use manual focus anyway.

And here's a close up of part of the original image, cropped slightly lower than the version I used. The arrows point to the most obvious shadow images. I'm puzzled by the effect either side of the road marking to the left of the picture.



Doesn't this hobby take one down strange avenues?!...

Offline NinOz

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Re: Wrenton
« Reply #322 on: November 21, 2017, 01:02:51 am »
And here's a close up of part of the original image, cropped slightly lower than the version I used. The arrows point to the most obvious shadow images. I'm puzzled by the effect either side of the road marking to the left of the picture.
Looks like the ghosts of previous road markings.  I thought they were due to attention to extreme detail. :)
To be called pompous and arrogant - hell of a come down.
I tried so hard to be snobbish and haughty.

Online MalcolmAL

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Re: Wrenton
« Reply #323 on: November 21, 2017, 04:11:06 am »
I think the star diagonals would cause vignetting. My box has that problem, but only at the wide angle end of the zoom. Unfortunately it's the wide angle settings that are most often needed!

but I use focus stacking
Ah ! ok !! that is a bit of a kettle of fish !
If it were a prime lens you could try wide open on the internal iris and use a front aperture (to define your exposure and f/ratio) and limit your need of a wide mirror

ont'her hand therwas a time when one could use acetone to remove the back coat of a fragment of mirror, if one were lucky one would obtain a suitable portion of front :)

Re focus stack : I did espouse this technique 3/4 year ago on this very forum but was well-told that models should be obviously that ! ie. fuzzy in the front, fuzzy at the back, such that the detail was sharply in focus.
To emulate a sunny sea-side f/32 excursion buffer beam to guards van was not considered de-rigueur ! :) I didnt persue.




Online Innovationgame

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Re: Wrenton
« Reply #324 on: November 21, 2017, 06:31:36 am »
Now that you've pointed it out, I can see there are actually two ghost images, one below the main image and one above.  But, they are both so faint that I don't think anyone will notice without being told.
With kind regards
Laurence

Offline Bealman

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Re: Wrenton
« Reply #325 on: November 21, 2017, 06:43:57 am »
I agree. Fantastic stuff, regardless of double images!  :thumbsup:
Vision over visibility. Bono, U2.

Offline daveg

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Re: Wrenton
« Reply #326 on: November 21, 2017, 07:32:43 am »
An interesting side-topic.

Unless the problem really annoys you, Roger, I wouldn't let it distract you too much from your excellent modelling.

Keep the photos coming!  :thumbsup:

Dave G

Offline Bealman

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Re: Wrenton
« Reply #327 on: November 21, 2017, 08:46:18 am »
Dave yeah!  :thumbsup: :beers:
Vision over visibility. Bono, U2.

Offline rogerdB

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Re: Wrenton
« Reply #328 on: November 21, 2017, 12:07:21 pm »
Looks like the ghosts of previous road markings.  I thought they were due to attention to extreme detail. :)

Now why didnít I think of that!


Re focus stack : I did espouse this technique 3/4 year ago on this very forum but was well-told that models should be obviously that ! ie. fuzzy in the front, fuzzy at the back, such that the detail was sharply in focus.
To emulate a sunny sea-side f/32 excursion buffer beam to guards van was not considered de-rigueur ! :) I didnt persue.

I think you can tell whose side Iím on in that debate. I think a fuzzy-sharp-fuzzy image immediately says Ďthis is a model.í As usual it pays to study the prototypes. In this case the prototypes are photos of real railway scenes in the steam age. In so many of them everything is sharp, from foreground details to distant skyline. Thatís the look I try to achieve.

But just to prove that I can let the background be less than sharp, hereís my latest bit of wagon weathering.



They were bought as a factory weathered set. Iíve come to the conclusion that itís a lot easier to weather mint models than those with rather unconvincing factory weathering and I had to tone down the rust effects on these three.

Offline ijmsmith

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Re: Wrenton
« Reply #329 on: November 21, 2017, 05:25:07 pm »
The slight ghosting is due to the thickness of the glass with the silver behind. It can only be alleviated by using a front surface silvered mirror. These seem to be quite tricky to get hold of - usually only available from specialist optical suppliers. There was an in depth article a few years ago in Model Railroader about using mirrors to disguise parts of you layout. Anyway I wouldn't have spotted it without the previous eagle eyed posters... I think your bridge looks fab!

 

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