07-20-2012, 12:19 PM
[quote name='wim' timestamp='1342783092' post='19487']
The 20 F/1.7 is a relatively noisy lens, whatever the camera settings are <img src='http://forum.photozone.de/public/style_emoticons/<#EMO_DIR#>/biggrin.gif' class='bbc_emoticon' alt='
' />. It is far less noisy than any Canon AFD lens I have ever used. AFAIK, it is purely caused by the AF motor, i.e, switching on and off, and moving when focusing. I was a bit worried about it right at the start, too, as it is the noisiest lens of the MFT lenses and adapted ones I own. I did try an Olympus FT 35 F/3.5 Maro with adapter once, and that was really noisy, compared to the 20 F/1.7 (and very slow to focus <img src='http://forum.photozone.de/public/style_emoticons/<#EMO_DIR#>/biggrin.gif' class='bbc_emoticon' alt='' />).
However, one gets used to this very quickly, especially when seeing the results <img src='http://forum.photozone.de/public/style_emoticons/<#EMO_DIR#>/wink.gif' class='bbc_emoticon' alt='
' />. So far, nobody ever made a comment about the noise the lens makes, BTW. I don't think it really is audible, or irritating, at subject distance.
Kind regards, Wim
[/quote]
Hi Wim:
I think the "tick, tick..." sound come from the aperture adjustment not from the AF motor, see my response to Sammy and Popo. The sound is very simillar to the ticking sounds of a clock. After knowing it is normal, I need not worry about it any more.
After putting the lens on my camera, I saw a small but clear dust (or something like a dust) in the front element. I thought it could be easily remove by a blower/brush. But I found that I couldn't remove it. After more careful inspection I find that it is inside the lens. I am not sure if I should have the lens replaced or not.
Best regards,
Frank
The 20 F/1.7 is a relatively noisy lens, whatever the camera settings are <img src='http://forum.photozone.de/public/style_emoticons/<#EMO_DIR#>/biggrin.gif' class='bbc_emoticon' alt='
' />. It is far less noisy than any Canon AFD lens I have ever used. AFAIK, it is purely caused by the AF motor, i.e, switching on and off, and moving when focusing. I was a bit worried about it right at the start, too, as it is the noisiest lens of the MFT lenses and adapted ones I own. I did try an Olympus FT 35 F/3.5 Maro with adapter once, and that was really noisy, compared to the 20 F/1.7 (and very slow to focus <img src='http://forum.photozone.de/public/style_emoticons/<#EMO_DIR#>/biggrin.gif' class='bbc_emoticon' alt='' />).However, one gets used to this very quickly, especially when seeing the results <img src='http://forum.photozone.de/public/style_emoticons/<#EMO_DIR#>/wink.gif' class='bbc_emoticon' alt='
' />. So far, nobody ever made a comment about the noise the lens makes, BTW. I don't think it really is audible, or irritating, at subject distance.Kind regards, Wim
[/quote]
Hi Wim:
I think the "tick, tick..." sound come from the aperture adjustment not from the AF motor, see my response to Sammy and Popo. The sound is very simillar to the ticking sounds of a clock. After knowing it is normal, I need not worry about it any more.
After putting the lens on my camera, I saw a small but clear dust (or something like a dust) in the front element. I thought it could be easily remove by a blower/brush. But I found that I couldn't remove it. After more careful inspection I find that it is inside the lens. I am not sure if I should have the lens replaced or not.
Best regards,
Frank