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DT 18-250 and Minolta 100-200mm
Topic Started: Mar 16 2011, 09:28 PM (2,081 Views)
blaz7
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I am just very puzzled why does the my 18-250mm @ 250mm looks shorter than my Minolta 100-200mm @ 200mm?
Is there something wrong with my 18-250mm or is there something special with the 100-200mm?
Anyone has tested either one or both of these lenses?

DT 18-250 @250mm
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Minolta 100-200mm @200mm
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Attachments: 18_250.jpg (118.14 KB)
Attachments: 100_200.jpg (127.17 KB)
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Long
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It could be the max. magnification at the zoom end for the minolta is better ? im not so sure.
A850/ Tamron 2875 F2.8/ Minolta 70210 F4/ Minolta 50 F1.7/ Hvl58am

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blaz7
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Never heard of anything like you mentioned, to me 250mm should show me a bigger object than 200mm when shooting from the same spot using the same camera.
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cjng
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Emeritus Alphadslr Official Passerby~shooting badly since 2004 and continuing

It was discussed before on the net. Can't recall exactly which site
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Hello CZ! bye bye G!
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blaz7
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So do you remember their findings? I tried googling last night but could not find anything regarding this topic hence I decided to post here.
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cjng
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Can't recall it word for word vaguely recall It something to with the smaller image circle of the digital Lens vs the larger ff lens.
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Hello CZ! bye bye G!
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blaz7
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Some discussion i am having in flickr
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cjng
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Emeritus Alphadslr Official Passerby~shooting badly since 2004 and continuing

i in the wrong,
the symptom is knw as breathing
http://en.wikipedia.org/wiki/Breathing_%28lens%29
http://www.flickr.com/groups/356195@N23/discuss/72157626009166844/
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Hello CZ! bye bye G!
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blaz7
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Thanks for finding this out. :thumbsup1:
Edited by blaz7, Mar 18 2011, 06:15 AM.
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tuckloong
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Ya breathing at close focus...infinity should be ok ok de...
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