How did this pix happen?

Railroadforums.com is a free online Railroad Discussion Forum and Railroad Photo Gallery for railroaders, railfans, model railroaders and anyone else who is interested in railroads. We cover a wide variety of topics, including freight trains, passenger and commuter railroads, rail news and information, tourist railroads, railway museums and railroad history.

ctclibby

New Member
Hi All!
Hope y'all are well

Ok, so I stopped at Sandpoint station the other day and got some shots of her for modeling purpose. I could not get inside as it is only open at 0:dark:30. I figured that I would place my lens flat on the window and attempt to get shots of the inside. You can see from the photo some of the inside detail which helped.
My burning question is: how in the world does my reflection show up? This is single pane glass. If I remember light theory from way back, since it is single pain glass there are two planes that incident light hits, one going in and one going out. Ok, so the light bends slightly on each, but to have pretty much my whole reflection in the result?

Pentax K70, mode was Auto
SMC Pentax DA 18-135mm

Shadow.JPG


Bridge construction has pretty much stalled. They are still at the same place as a couple of weeks ago. Some of the barges are now in the water, but nothing further into the lake.
 

bnsf971

Roadmaster
Does the camera use any image from a second lens that may not have been flat on the glass? Maybe for the auto focus?
 

ctclibby

New Member
Hmm, don't think so. As far as I know, all of the Pentax I have owned; both film and digital focus through the lens. When I took that shot, focus was at infinity as I don't remember rattling the glass. If there were a 2nd lens for auto-focus, would it not be off center somewhere which would skew the image?
 

bnsf971

Roadmaster
Hmm, don't think so. As far as I know, all of the Pentax I have owned; both film and digital focus through the lens. When I took that shot, focus was at infinity as I don't remember rattling the glass. If there were a 2nd lens for auto-focus, would it not be off center somewhere which would skew the image?
It possibly would. If you have the camera handy, turn it on, leave the lens cap on, and see if you can see anything through the viewfinder. If you can, you have your answer. If not, we can keep suggesting
 

ctclibby

New Member
Been awhile, but think that the K1000 was the only Pentax that was not sight through lens; and I am not sure of that. Got that one in 87ish.
 

Bob

Forum Host
Staff member
If the lens was truly against the glass, this shouldn't be possible.

It appears that it was quite a ways back from the reflecting surface. So either you were holding it back further than you realize, or there's a second sheet of glass / plexiglass inside.

That's my guess anyway.
 

ctclibby

New Member
Lens was flat on the glass as I figured that way the camera could see inside instead of the glass reflecting the end of the lens back. I will check again, but am pretty sure it was single pain. This is a head scratcher.
 

Bob

Forum Host
Staff member
Are they all like this? Or did you maybe hit the shutter before you put it against the glass?
 

ctclibby

New Member
Ok, so this has me bugged. I guess that the lens is offset from the window glass by about 1/8 inch: distance from UV filter outer ring to filter glass. The sun-shade is not attached. Have to go to Spo today and will give it a go without the UV filter on the way back.
 

ctclibby

New Member
Are they all like this? Or did you maybe hit the shutter before you put it against the glass?
Hi Bob, ALL of the interior shots were like that. When I got home the first time and looked at the pix, I deleted them because you really could not see the interior all that great. Figured that I would find another way, or get there when station was open. I got to thinking about those deleted pix and wondered to myself how that was possible. So, couple days later stopped again to verify what happened; hence the pix in the post.
 

ctclibby

New Member
Welp, the universe can now rest! The outside window was single pain, however there is another complete window on the inside about 6 inches in, painted black or some dark color. It was hard to see even when looking for it. Boy, what a dumb sh.t was I!
 

bnsf971

Roadmaster
At least the mystery is solved. Can you get the picture when it is lighter inside the building than where you are taking the photo? That may keep the second window from reflecting the great outdoors.
 

ctclibby

New Member
I haven't been through there in the early evening and don't know if they turn in inside lights on. Station is open for both the EB and WB Builder at 01:00 and that is my sleep time! I can't just go there as it is a 80 mile drive.
 

Bob

Forum Host
Staff member
Welp, the universe can now rest! The outside window was single pain, however there is another complete window on the inside about 6 inches in, painted black or some dark color. It was hard to see even when looking for it. Boy, what a dumb sh.t was I!
Ah, that makes sense. It's really the only thing I could think of. Even if you weren't completely tight to the glass, the reflection was pretty wide.

No worries, it was a fun mystery!
 




RailroadForums.com is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to amazon.com

RailroadBookstore.com - An online railroad bookstore featuring a curated selection of new and used railroad books. Railroad pictorials, railroad history, steam locomotives, passenger trains, modern railroading. Hundreds of titles available, most at discount prices! We also have a video and children's book section.

ModelRailroadBookstore.com - An online model railroad bookstore featuring a curated selection of new and used books. Layout design, track plans, scenery and structure building, wiring, DCC, Tinplate, Toy Trains, Price Guides and more.

Affiliate Disclosure: We may receive a commision from some of the links and ads shown on this website (Learn More Here)

Top