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| Bird Photography 2020 - Page 17 | |
| Replacing the previous Bird topic of 2019. | Rating: 
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| Posted: Sat Mar 28th, 2020 06:29 |
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161st Post |
Iain
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The 400mm f2.8 is a bit of a beast as far as weight is concerned and there is a bit of a selective market for it.
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| Posted: Sat Mar 28th, 2020 07:44 |
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162nd Post |
chrisbet
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Eric wrote:was told that there was an aluminium strip 'in there' that can oxidise and needed regular use to wear it off Aluminium forms a thin oxide layer immediately it is exposed to oxygen - so all regular aluminium surfaces are "oxidised". I would have thought the issue is more likely to be galvanic corrosion due to the use of other metals in contact with the aluminium or just a poor choice of material in the first place. If indeed, that is the source of the noise - lenses aren't THAT difficult to disassemble, I'd be tempted to take it apart and clean / lubricate.
____________________ If it is broken it was probably me .... |
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| Posted: Sat Mar 28th, 2020 08:29 |
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163rd Post |
jk
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chrisbet wrote:Aluminium forms a thin oxide layer immediately it is exposed to oxygen - so all regular aluminium surfaces are "oxidised". I agree it is a poor choice of material in this and other SWM lenses. I would have thought that a different metal or a plastic covering would be useful alternative.
____________________ Still learning after all these years! https://nikondslr.uk/gallery_view.php?user=2&folderid=none |
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| Posted: Wed Apr 1st, 2020 05:15 |
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164th Post |
blackfox
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super kestrel shot graham was this at a paid hide ?
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| Posted: Wed Apr 1st, 2020 05:22 |
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165th Post |
blackfox
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female stonechat a few days before lockdown . olympus omd1-mkii plus PL100-400 .taken from mobile ford  Click here to comment on this image mondeo hide
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| Posted: Wed Apr 1st, 2020 06:28 |
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166th Post |
Graham Whistler
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I love it, thats a super image Jeff well done, keep well and keep shooting!
____________________ Graham Whistler |
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| Posted: Wed Apr 1st, 2020 11:44 |
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167th Post |
Eric
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blackfox wrote:female stonechat a few days before lockdown . olympus omd1-mkii plus PL100-400 .taken from mobile ford That's a lovely image, Jeff. Cracking bird
____________________ Eric |
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| Posted: Thu Apr 2nd, 2020 10:34 |
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168th Post |
blackfox
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thanks Eric,graham appreciated
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| Posted: Thu Apr 2nd, 2020 10:34 |
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169th Post |
blackfox
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heres her partner a few minutes later  Click here to comment on this image.
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| Posted: Thu Apr 2nd, 2020 11:40 |
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170th Post |
Graham Whistler
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Very good again!
____________________ Graham Whistler |
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