| View previous topic :: View next topic |
| Author |
Message |
DenaDesign
Joined: 24 Feb 2026 Posts: 6
|
Posted: Thu Feb 26, 2026 5:11 pm Post subject: Out of focus photos? |
|
|
I have recently been taking photos with my Graflex Pacemaker 4x5 Speed Graphic, and it seems to me that all the photos are out of focus after I develop. I focus on the ground glass, and I am very sure that it was in focus, but it ends up appearing unfocused. Here are some photos: https://1drv.ms/i/c/8ad0ddf839916e6d/IQBMHGBQfz2pQrv7iXE63kOyAQL2oaLd1dgANGhEwQ7iGsA?e=cohF04 For this one, I was pretty sure I was focusing on the tiled wall, but apparently not. I took this photo because a previous photo of the same thing had the same problem, and I thought I simply wasn't focusing correctly. https://1drv.ms/i/c/8ad0ddf839916e6d/IQCxrQnFQ0z5QY-zNUfxi2GzARbtjM4gzIK4TCRVa9NT6YI?e=Ukuujv In this image, I was focusing on the globe. And as you can see, it is NOT in focus.
I could just be focusing incorrectly, but I'm thinking maybe it's something with the ground glass? Maybe it doesn't show what exactly the film is at or something like that? Please help me with this and I would appreciate it. |
|
| Back to top |
|
 |
DenaDesign
Joined: 24 Feb 2026 Posts: 6
|
Posted: Thu Feb 26, 2026 6:42 pm Post subject: |
|
|
I opened up the camera and here is what I found: https://1drv.ms/i/c/8ad0ddf839916e6d/IQA9m-B43PL2Q5p7YzJJt76wAcTuvtyJeFefVjfKQs9fQeo?e=GNjtS7
Sorry for the crude illustration. This is the current placement and orientation of the ground glass and a fresnel inside when I bought the camera. Whether this is the correct placement, I don't know, and please note in real life the two pieces of glass are directly touching each other. Can someone tell me if this is correct? |
|
| Back to top |
|
 |
Henry
Joined: 09 May 2001 Posts: 1655 Location: Allentown, Pennsylvania
|
Posted: Thu Feb 26, 2026 7:46 pm Post subject: |
|
|
The frosted side of the GG should face the lens, and the fresnel “ bumps” should face the frosted side. Looks like your GG and your fresnel should be turned around. Directly touching is Ok.
Last edited by Henry on Thu Feb 26, 2026 11:10 pm; edited 1 time in total |
|
| Back to top |
|
 |
DenaDesign
Joined: 24 Feb 2026 Posts: 6
|
Posted: Thu Feb 26, 2026 8:30 pm Post subject: |
|
|
| Awesome! This should fix my focus issue? |
|
| Back to top |
|
 |
Henry
Joined: 09 May 2001 Posts: 1655 Location: Allentown, Pennsylvania
|
Posted: Thu Feb 26, 2026 8:36 pm Post subject: |
|
|
If the GG frosted side lies precisely in the film plane, you should be OK.
You are using a loupe to focus, aren’t you? |
|
| Back to top |
|
 |
DenaDesign
Joined: 24 Feb 2026 Posts: 6
|
Posted: Thu Feb 26, 2026 8:50 pm Post subject: |
|
|
| Nope! I am not. Should I? I find it easy enough to focus without one. |
|
| Back to top |
|
 |
Henry
Joined: 09 May 2001 Posts: 1655 Location: Allentown, Pennsylvania
|
Posted: Thu Feb 26, 2026 10:10 pm Post subject: |
|
|
| For optimum results, loupe focussing is essential. |
|
| Back to top |
|
 |
|