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lumens pixel
Joined: 27 Feb 2019
Posts: 887
Expire: 2021-06-25
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 Posted: Tue Jun 07, 2022 7:42 am Post subject: My lens likes to rest: Canon FD 35-70 F4 |
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lumens pixel wrote:
This is curious. Last time I used this lens I was quite displeased by the results after having praised this lens. My pic was pretty unsharp on the edges.
Out of curiosity I mounted the lens again today and tested it from my window and it was perfect. Maybe it fixes itself over time.
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Lumens Pixel
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Minolta SR mount: 16 2,8; Sigma SuperWide 24 2,8; 28 2,5; 28 2,8; 28 3,5; 35 2,8; 45 2,0; 50 1,4; 50 1,7; 50 2,0; 58 1,4; 85 2,0; 100 2,5; 100 4 Macro; 135 3,5; 135 2,8; 200 4; RF 250 5,6; 24-35 3,5; 35-70 3,5; 75-150 4; 70-210 4
Canon FD mount: Tokina RMC 17 3,5; 28 2,8; 35 2,8; 50 1,8; 50 3,5 Macro; 55 1,2; 135 3,5; 135 2,5; 200 4,0; 300 5,6; 28-55 3,5 4,5; Tokina SZ-X SD 270; 70-150 4,5; 70-210 f4; 80-200 4L; Tokina SZ-X 845
Tamron Adaptall: 28-80 3,5-4,2 (27A); 70-210 3,8-4 (46A); 60-300 (23A); 90 2,5 (52B); 35-135 3,5-4,5 (40A)
Tamron SP: 20-40 2,7-3,5 (266D) |
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D1N0
Joined: 07 Aug 2012
Posts: 2536
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| Posted: Tue Jun 07, 2022 9:14 am Post subject: |
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D1N0 wrote:
It's probably wobbly so sometimes it's good and other times bad depending in how centered it still is.
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pentaxian |
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lumens pixel
Joined: 27 Feb 2019
Posts: 887
Expire: 2021-06-25
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| Posted: Tue Jun 07, 2022 9:52 am Post subject: |
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lumens pixel wrote:
| D1N0 wrote: |
| It's probably wobbly so sometimes it's good and other times bad depending in how centered it still is. |
Most probably. I shook it a bit and played with the rings to see if it would get misaligned. So far so good.
_________________
Lumens Pixel
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Minolta SR mount: 16 2,8; Sigma SuperWide 24 2,8; 28 2,5; 28 2,8; 28 3,5; 35 2,8; 45 2,0; 50 1,4; 50 1,7; 50 2,0; 58 1,4; 85 2,0; 100 2,5; 100 4 Macro; 135 3,5; 135 2,8; 200 4; RF 250 5,6; 24-35 3,5; 35-70 3,5; 75-150 4; 70-210 4
Canon FD mount: Tokina RMC 17 3,5; 28 2,8; 35 2,8; 50 1,8; 50 3,5 Macro; 55 1,2; 135 3,5; 135 2,5; 200 4,0; 300 5,6; 28-55 3,5 4,5; Tokina SZ-X SD 270; 70-150 4,5; 70-210 f4; 80-200 4L; Tokina SZ-X 845
Tamron Adaptall: 28-80 3,5-4,2 (27A); 70-210 3,8-4 (46A); 60-300 (23A); 90 2,5 (52B); 35-135 3,5-4,5 (40A)
Tamron SP: 20-40 2,7-3,5 (266D) |
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eggplant
Joined: 27 May 2020
Posts: 517
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| Posted: Tue Jun 07, 2022 10:17 am Post subject: |
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eggplant wrote:
Maybe not the same overall construction, but on the topic of wobble-
Interesting with some one touch telephoto zooms, even if there's some play in the grip and it isn't a perfect fitting, it doesn't mean the front section with the front lens group will wobble too.
But on some, a wobbly grip does actually mean a wobbly front section. I have an Ozeck 35-150mm f3.5-4.5 which sadly does this and resolution just seems generally low. Is this the cause? Who knows...
In addition, I wonder if at all possible for it to be tightened up. Or is there just some natural play? |
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D1N0
Joined: 07 Aug 2012
Posts: 2536
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| Posted: Tue Jun 07, 2022 10:40 am Post subject: |
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D1N0 wrote:
General poor build so the lens got out of spec with use, maybe it got dropped and whacked too much. I have a lens that I can focus to infinity but when I wobble it a bit everything is out of focus again, it has both lateral and planar wobble. Very poor contrast, you had to be very careful not to wobble after achieving focus. I got a better copy. That was fine.
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pentaxian |
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Dejan
Joined: 05 Jan 2021
Posts: 151
Location: Belgrade, Serbia
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| Posted: Tue Jun 07, 2022 10:58 am Post subject: |
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Dejan wrote:
With some (prime) lenses I could deal with the wobble by tightening the screws (which may got lose over time or someone didn't "CLA" properly). Of course, there was nothing mechanically wrong and the zooms are more complicated. Canon nFD has got a reputation for porous bearings, which is why I avoid those. Apparently there are so many bad copies around (or good copies about to go bad). |
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lumens pixel
Joined: 27 Feb 2019
Posts: 887
Expire: 2021-06-25
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| Posted: Tue Jun 07, 2022 11:27 am Post subject: |
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lumens pixel wrote:
| Dejan wrote: |
| With some (prime) lenses I could deal with the wobble by tightening the screws (which may got lose over time or someone didn't "CLA" properly). Of course, there was nothing mechanically wrong and the zooms are more complicated. Canon nFD has got a reputation for porous bearings, which is why I avoid those. Apparently there are so many bad copies around (or good copies about to go bad). |
I do not know if this lens has the famous rotten bearings which Volker knows too well. Since it's in the lowly range of the FD lenses maybe it was blessed with the cheap nylon ones.
_________________
Lumens Pixel
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Minolta SR mount: 16 2,8; Sigma SuperWide 24 2,8; 28 2,5; 28 2,8; 28 3,5; 35 2,8; 45 2,0; 50 1,4; 50 1,7; 50 2,0; 58 1,4; 85 2,0; 100 2,5; 100 4 Macro; 135 3,5; 135 2,8; 200 4; RF 250 5,6; 24-35 3,5; 35-70 3,5; 75-150 4; 70-210 4
Canon FD mount: Tokina RMC 17 3,5; 28 2,8; 35 2,8; 50 1,8; 50 3,5 Macro; 55 1,2; 135 3,5; 135 2,5; 200 4,0; 300 5,6; 28-55 3,5 4,5; Tokina SZ-X SD 270; 70-150 4,5; 70-210 f4; 80-200 4L; Tokina SZ-X 845
Tamron Adaptall: 28-80 3,5-4,2 (27A); 70-210 3,8-4 (46A); 60-300 (23A); 90 2,5 (52B); 35-135 3,5-4,5 (40A)
Tamron SP: 20-40 2,7-3,5 (266D) |
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Alsatian2017
Joined: 05 Mar 2018
Posts: 243
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| Posted: Wed Jun 08, 2022 2:35 pm Post subject: |
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Alsatian2017 wrote:
| lumens pixel wrote: |
I do not know if this lens has the famous rotten bearings which Volker knows too well. Since it's in the lowly range of the FD lenses maybe it was blessed with the cheap nylon ones. |
Well, unfortunately it does. It's an "older" style two-ring zoom and the construction is about the worst regarding the rotten rubber bearings since they are quite difficult to extract in most samples. By design, the nFD 35-70 mm f/4 is an outstanding lens, optically as good as the final version of the Minolta MD 35-70 mm f/3,5, but the mechanical construction is a pure nightmare.
Bon courage  |
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lumens pixel
Joined: 27 Feb 2019
Posts: 887
Expire: 2021-06-25
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| Posted: Wed Jun 08, 2022 3:26 pm Post subject: |
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lumens pixel wrote:
| Alsatian2017 wrote: |
| lumens pixel wrote: |
I do not know if this lens has the famous rotten bearings which Volker knows too well. Since it's in the lowly range of the FD lenses maybe it was blessed with the cheap nylon ones. |
Well, unfortunately it does. It's an "older" style two-ring zoom and the construction is about the worst regarding the rotten rubber bearings since they are quite difficult to extract in most samples. By design, the nFD 35-70 mm f/4 is an outstanding lens, optically as good as the final version of the Minolta MD 35-70 mm f/3,5, but the mechanical construction is a pure nightmare.
Bon courage |
Hélas... Do you know how compares the nFD 35 70 F3,5 4,5 to the f4? If it is nylon made and as good as the former I do not care much about the half stop at 70mm.
_________________
Lumens Pixel
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Minolta SR mount: 16 2,8; Sigma SuperWide 24 2,8; 28 2,5; 28 2,8; 28 3,5; 35 2,8; 45 2,0; 50 1,4; 50 1,7; 50 2,0; 58 1,4; 85 2,0; 100 2,5; 100 4 Macro; 135 3,5; 135 2,8; 200 4; RF 250 5,6; 24-35 3,5; 35-70 3,5; 75-150 4; 70-210 4
Canon FD mount: Tokina RMC 17 3,5; 28 2,8; 35 2,8; 50 1,8; 50 3,5 Macro; 55 1,2; 135 3,5; 135 2,5; 200 4,0; 300 5,6; 28-55 3,5 4,5; Tokina SZ-X SD 270; 70-150 4,5; 70-210 f4; 80-200 4L; Tokina SZ-X 845
Tamron Adaptall: 28-80 3,5-4,2 (27A); 70-210 3,8-4 (46A); 60-300 (23A); 90 2,5 (52B); 35-135 3,5-4,5 (40A)
Tamron SP: 20-40 2,7-3,5 (266D) |
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Alsatian2017
Joined: 05 Mar 2018
Posts: 243
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| Posted: Wed Jun 08, 2022 3:40 pm Post subject: |
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Alsatian2017 wrote:
| lumens pixel wrote: |
| Alsatian2017 wrote: |
| lumens pixel wrote: |
I do not know if this lens has the famous rotten bearings which Volker knows too well. Since it's in the lowly range of the FD lenses maybe it was blessed with the cheap nylon ones. |
Well, unfortunately it does. It's an "older" style two-ring zoom and the construction is about the worst regarding the rotten rubber bearings since they are quite difficult to extract in most samples. By design, the nFD 35-70 mm f/4 is an outstanding lens, optically as good as the final version of the Minolta MD 35-70 mm f/3,5, but the mechanical construction is a pure nightmare.
Bon courage |
Hélas... Do you know how compares the nFD 35 70 F3,5 4,5 to the f4? If it is nylon made and as good as the former I do not care much about the half stop at 70mm. |
I remember reading a comparison of the two 35-70 mm Canon nFD in the swiss photo magazine "Photographie" back in the 1980s. As far as I can recall, the older 35-70 mm f/4 was slightly better than the 35-70 mm f/3,5-4,5 but the differences were not that important. The newer one has Nylon bushings like the 28-55 mm. It just doesn't feel very nice in actual use as its completely clad in plastics. |
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lumens pixel
Joined: 27 Feb 2019
Posts: 887
Expire: 2021-06-25
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| Posted: Wed Jun 08, 2022 5:33 pm Post subject: |
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lumens pixel wrote:
As always, you are extremely helpful. 
_________________
Lumens Pixel
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Minolta SR mount: 16 2,8; Sigma SuperWide 24 2,8; 28 2,5; 28 2,8; 28 3,5; 35 2,8; 45 2,0; 50 1,4; 50 1,7; 50 2,0; 58 1,4; 85 2,0; 100 2,5; 100 4 Macro; 135 3,5; 135 2,8; 200 4; RF 250 5,6; 24-35 3,5; 35-70 3,5; 75-150 4; 70-210 4
Canon FD mount: Tokina RMC 17 3,5; 28 2,8; 35 2,8; 50 1,8; 50 3,5 Macro; 55 1,2; 135 3,5; 135 2,5; 200 4,0; 300 5,6; 28-55 3,5 4,5; Tokina SZ-X SD 270; 70-150 4,5; 70-210 f4; 80-200 4L; Tokina SZ-X 845
Tamron Adaptall: 28-80 3,5-4,2 (27A); 70-210 3,8-4 (46A); 60-300 (23A); 90 2,5 (52B); 35-135 3,5-4,5 (40A)
Tamron SP: 20-40 2,7-3,5 (266D) |
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