gregory t. davis
art / photography
large format lens equivalence chart
these charts show which lens gives the approximate equivalent viewpoint when changing formats, for example, a 210mm lens on a 4x5 gives the same viewpont as a 420mm lens on an 8x10 camera.
inches
|
2x3
|
4x5
|
5x7
|
8x10
|
11x14
|
14x17
|
16x20
|
20x24
|
|
2
|
31/4
|
41/8
|
61/2
|
71/2
|
12
|
14
|
161/2
|
|
23/4
|
41/8
|
51/2
|
81/4
|
91/2
|
14
|
161/2
|
19
|
|
31/4
|
43/4
|
61/2
|
91/2
|
103/4
|
161/2
|
19
|
24
|
|
33/4
|
51/2
|
71/2
|
103/4
|
12
|
19
|
21
|
28
|
|
41/8
|
61/2
|
81/4
|
12
|
14
|
21
|
24
|
30
|
|
43/4
|
71/2
|
91/2
|
14
|
161/2
|
24
|
30
|
35
|
|
51/2
|
81/4
|
12
|
161/2
|
19
|
30
|
35
|
42
|
|
61/2
|
91/2
|
14
|
19
|
24
|
35
|
42
|
471/2
|
|
81/4
|
12
|
161/2
|
24
|
30
|
42
|
471/2
|
60
|
|
103/4
|
161/2
|
19
|
30
|
35
|
471/2
|
60
|
72
|
|
12
|
19
|
24
|
35
|
42
|
60
|
72
|
---
|
|
14
|
21
|
30
|
42
|
471/2
|
72
|
---
|
---
|
|
161/2
|
24
|
35
|
471/2
|
60
|
---
|
---
|
---
|
|
21
|
30
|
42
|
60
|
72
|
---
|
---
|
---
|
|
24
|
35
|
471/2
|
72
|
---
|
---
|
---
|
---
|
metric
|
2x3
|
4x5
|
5x7
|
8x10
|
11x14
|
14x17
|
16x20
|
20x24
|
|
55
|
90
|
110
|
165
|
190
|
300
|
360
|
420
|
|
65
|
110
|
120
|
210
|
240
|
360
|
420
|
480
|
|
75
|
120
|
165
|
240
|
270
|
420
|
480
|
600
|
|
90
|
135
|
180
|
270
|
300
|
480
|
530
|
710
|
|
110
|
165
|
210
|
300
|
360
|
530
|
600
|
760
|
|
120
|
180
|
240
|
360
|
420
|
600
|
760
|
890
|
|
135
|
210
|
300
|
420
|
480
|
760
|
890
|
1100
|
|
165
|
240
|
360
|
480
|
600
|
890
|
1100
|
1200
|
|
210
|
300
|
420
|
600
|
760
|
1100
|
1200
|
1500
|
|
270
|
420
|
480
|
760
|
890
|
1200
|
1500
|
1800
|
|
300
|
480
|
600
|
890
|
1100
|
1500
|
1800
|
---
|
|
360
|
530
|
760
|
1100
|
1200
|
1800
|
---
|
---
|
|
420
|
600
|
890
|
1200
|
1500
|
---
|
---
|
---
|
|
530
|
760
|
1100
|
1500
|
1800
|
---
|
---
|
---
|
|
600
|
890
|
1200
|
1800
|
---
|
---
|
---
|
---
|