Rail length

Standing Out

D
Standing Out

  • 0
  • 0
  • 13
Chloe

A
Chloe

  • 1
  • 1
  • 119
Waverley Station

A
Waverley Station

  • 1
  • 2
  • 163
Grain rain

A
Grain rain

  • 3
  • 3
  • 196
Dancer In Motion

A
Dancer In Motion

  • 4
  • 4
  • 209

Recent Classifieds

Forum statistics

Threads
189,818
Messages
2,647,082
Members
97,352
Latest member
Yuyuik
Recent bookmarks
1

pkr1979

Subscriber
Joined
Jun 25, 2019
Messages
227
Location
Oslo
Format
Multi Format
Hi all,

I just ordered a 450mm for my 8x10 camera. The rail I got is about 50 cm (or thereabouts). I felt its abit short so i ordered a new one. The size is standard so got one thats two meters (also standard size). Now, this is a bit much so I figured Id shorten it... but what is a useful length? My bellows go out to about one meter if i remember correctly but Im not sure if this might be a bit long too? Or if its a good length for a 450?

Cheers
Peter
 

B.S.Kumar

Subscriber
Joined
Jun 30, 2007
Messages
3,300
Location
Nara, Japan
Format
4x5 Format
For a 450mm lens, approximately 900mm will give you a half life-size image, 1800mm will give you a life-size image. Do you want to shoot macro?
 
OP
OP

pkr1979

Subscriber
Joined
Jun 25, 2019
Messages
227
Location
Oslo
Format
Multi Format
I got a 210mm that might be easier for macro. Im not really shooting a lot of macro either.
 

Dustin McAmera

Subscriber
Joined
Feb 15, 2023
Messages
384
Location
UK
Format
Multi Format
The diagonal of 8x10 is about 325mm, so a metre of rail gives you a triple-extension camera; only really a meaningful statement if you mount a normal-length lens on it, I suppose.
 

B.S.Kumar

Subscriber
Joined
Jun 30, 2007
Messages
3,300
Location
Nara, Japan
Format
4x5 Format
A rail longer than 1000mm is overkill, unless you're planning to use very long lenses to focus at short distances.
 
OP
OP

pkr1979

Subscriber
Joined
Jun 25, 2019
Messages
227
Location
Oslo
Format
Multi Format
Thanks guys. Made one 1000mm and one 750mm :smile:
 

DREW WILEY

Member
Joined
Jul 14, 2011
Messages
12,234
Format
8x10 Format
There is no single answer. Depends what lenses you use, and how you use them. I routinely keep a 24 inch rail on even my 4X5 Sinar because I like to work with long focal lengths. But it's comprised of a 12 inch center section and then a 6 inch extension at both ends, so it takes mere seconds to shorten the rail if needed. When it comes to 8x10 format, the longest lens I use is a 600mm Fuji C, so 750mm of extension is ample, since I use shorter focal lengths for close-ups anyway, especially a 360 Fuji A.
 

Mal Paso

Member
Joined
Oct 14, 2019
Messages
237
Location
Carmel, Ca USA
Format
4x5 Format
I have a 42 inch rail which focuses my 1200mm Nikkor tele to about 25 feet and my 600mm to 5 feet. Telephotos usually focus shorter than their given focal length. Infinity focus for the 1200mm is 775mm. It's one of the longest 8x10 lenses commonly available.
 

Rod Klukas

Subscriber
Joined
Feb 18, 2018
Messages
30
Location
mesa, AZ
Format
Multi Format
For a 450mm lens, approximately 900mm will give you a half life-size image, 1800mm will give you a life-size image. Do you want to shoot macro?

The formula is twice the focal length for 1:1 reproduction ratio. See Leslie Stroebel View Camera Technique page 125.
 
Photrio.com contains affiliate links to products. We may receive a commission for purchases made through these links.
To read our full affiliate disclosure statement please click Here.

PHOTRIO PARTNERS EQUALLY FUNDING OUR COMMUNITY:



Ilford ADOX Freestyle Photographic Stearman Press Weldon Color Lab Blue Moon Camera & Machine
Top Bottom