Re: 4x5 lens used on a 8x10?
Double the field of view.
Depends on which models of lenses you have. Most don't cover 8x10.
Re: 4x5 lens used on a 8x10?
Some 210mm lenses cover 8x10 well, many will cover good enough for paper negatives and homemade camera.
Re: 4x5 lens used on a 8x10?
Thank you both for such quick responses. The lenses I have are
Schneider - Kreuznach APO - Symmar 5.6/210mm Multicoating
Schneider - Kreuznach APO - Symmar 5.6/150mm Multicoating
Nikkor - SW 90mm 1:4.5
Re: 4x5 lens used on a 8x10?
Some people say the 210 Symmar will just cover, others disagree. You will have zero room for movements if it works. A 210 G Claron will do it with a little room for movement. The 150mm is a 5X7 lens at best (previous versions were labeled as suitable for 4X5) and the 90 won't cover either.
Now if you were moving up to 5X7, you'd like the answer better.
Re: 4x5 lens used on a 8x10?
Re: 4x5 lens used on a 8x10?
Your lenses will work on 8x10, it's just that they won't cover from corner to corner, with the possible exception of your 210mm (see picture #5 in the link above). They'll project a circle or leave the corners dark. If you can live with that, or if you trim down your prints, you can certainly use them to make images. Some like the circular image.
The focal length of a lens doesn't change with film format; it's just that larger film formats need longer lenses to look "normal". Whereas a 150mm lens is normal (i.e., with focal length approximately equal to the diagonal of the film), for 8x10 it is 300mm. A 210mm on 8x10 is roughly equivalent to a 100mm (i.e., fairly wide-angle) lens on 4x5.
Lenses come in different designs with smaller or larger angles of coverage. For example, the 150mm and 210mm you have cover about 70°, your 90mm has 100+° of coverage. Schneider Symmars, Fujinon and Nikkor Ws, and Rodenstock Sironars fall into the first category. In the second category are Schneider Super Angulons, Nikkor and Fuji SWs and Rodenstock Grandagons. The Schneider and Rodenstock lens "families" have been developed and improved over time, acquiring additions to their names as coverage and quality got better (e.g., Sironar-N, Sironar-S, Super Angulon XL, Apo.. etc.). Wikipedia is your friend if you want to start learning more.
Hope this helps,
Doremus
Re: 4x5 lens used on a 8x10?
Where are you in the UK. Someone local may have a camera for you to look at that may help you with your design, pr be able to show you the coverage of your lenses on their ground glass
Re: 4x5 lens used on a 8x10?
The lenses I have are
Schneider - Kreuznach APO - Symmar 5.6/210mm Multicoating -- image circle 321 mm @ f/22
Schneider - Kreuznach APO - Symmar 5.6/150mm Multicoating -- ic 233 mm @ f/22
Nikkor - SW 90mm 1:4.5 -- ic 236 mm @ f/16
Image circle definitions here are "acceptable image quality within the circle." The lenses may illuminate larger circles.
Re: 4x5 lens used on a 8x10?