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riochico
Joined: 19 Feb 2004
Posts: 4
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 Posted: Mon Mar 01, 2004 2:02 am Post subject: |
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I am used to working with a 90mm f6.8lens on my super speed graphic and now plan to move up to an 8x10 camera. What lens mm would I need to get the same wide angle with an 8x10 as I get with 90mm on my 4x5?
Would I be able to use my current 4x5 135mm lens as a wide angle lens on an 8x10 camera? I guess this is only possible to find out by trying but any advice you have will be helpful.
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Nick
Joined: 16 Oct 2002
Posts: 494
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| Posted: Mon Mar 01, 2004 3:42 am Post subject: |
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On 2004-02-29 18:02, riochico wrote:
I am used to working with a 90mm f6.8lens on my super speed graphic and now plan to move up to an 8x10 camera. What lens mm would I need to get the same wide angle with an 8x10 as I get with 90mm on my 4x5?
Would I be able to use my current 4x5 135mm lens as a wide angle lens on an 8x10 camera? I guess this is only possible to find out by trying but any advice you have will be helpful.
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Basically double the focal lengths. 90mm on 4x5 is 180mm on 8x10. It's highly unlikely that your 135mm will cover 8x10. If you give the model somebody may know the coverage. |
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t.r.sanford
Joined: 10 Nov 2003
Posts: 812
Location: East Coast (Long Island)
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| Posted: Mon Mar 01, 2004 3:42 am Post subject: |
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For purposes of very rough comparison, figure that the diagonal of an 8x10 sheet is twice that of a 4x5 sheet, and both formats have the same aspect ratio. So, in ballpark numbers, a 180mm. wide angle lens would provide about the same field of view on an 8x10 camera as a 90mm. provides on a 4x5.
It is very, very unlikely that your 4x5 normal lens produces an image circle wide enough to cover 8x10 at infinity. Close up, racked out to double extension for 1:1 reproduction, it almost certainly does.
Wollensak made a 159mm. f:9.5 "Extra Wide Angle" lens that's said to cover 8x10, and there was a 140mm. f:18 Zeiss Wide Angle "Protar" for which some have made that claim (I've never tried it, but it covers the heck out of 4x5!)
I think the (more modern and functional) 190mm. Kodak "Wide Field Ektar" will cover 8x10 (and it tends to be priced accordingly). |
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RichS
Joined: 18 Oct 2001
Posts: 1468
Location: South of Rochester, NY
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| Posted: Mon Mar 01, 2004 3:55 am Post subject: |
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T.R's right. The wide field Kodak is one of the more popular wide angles on 8x10. I don't own one because people seem to like them so much...
The Wolly 159 is a great lens, either in f9.5 or f12. Most of the f12's have the stop pin removed and open to 9.5 nowadays which makes focusing a bit easier. And the 159 seems a whole lot wider on 8x10 than you'd think...
In more modern glass, the Schneider 165 Super Angulon (f8 I think?) is one of the most popular around, and of course priced accordingly. There's also a great Nikon 150 SW and many, many more...
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