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General Photography
Project 365 & Daily Photos
Vincent 2014 365 project
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<blockquote data-quote="Vincent" data-source="post: 382579" data-attributes="member: 15675"><p><span style="color: #333333">Teleconverters the truth 2: I was recently with someone who sold all his TCs, using the Nikon 28-300 and the Sigma 50-150 he coherently had better results without TC:</span></p><p><span style="color: #333333"></span></p><p><span style="color: #333333">This was the test set-up with my Sigma 500mm (50mm equivalent view):</span></p><p><span style="color: #333333"></span>[ATTACH]125185[/ATTACH]</p><p>Principle was to use the best f stop.</p><p></p><p></p><p>The eye in the pictures was too small to come to reasonable results so I had to crop the head:</p><p></p><p>TC 1,4X</p><p>[ATTACH]125186[/ATTACH]</p><p></p><p>TC 2X</p><p>[ATTACH]125187[/ATTACH]</p><p></p><p>TC1,4+2 X</p><p></p><p>[ATTACH]125188[/ATTACH]</p><p></p><p>So:</p><p>1) Probably better to not use a TC if you do not need to (depends on the Mpix you have, if you can crop a lot it will come out well)</p><p>- don`t be lazy get closer</p><p>- TC`s make you loose light, you need very good light to use them. Not early in the morning or late at night, except very good cameras.</p><p>- when you reduce your field of view it is more difficult to find your subject and you amplify camera shake (technique is very important).</p><p>- less TC will allow you faster shutter speed which is probably more important.</p><p>2) When to use a TC</p><p>- excellent lens</p><p> - low Mpix and low possibility to crop</p><p> - when you need the more detail to be able to focus correctly</p><p> - when your focus system needs a bigger subject to track correctly</p><p> - when you need almost all the Mpix for the size of picture you want to print</p><p></p><p>I forgot to take the picture without TC, ...</p><p>it shows that I do not follow the recommendation, I grab the TC too quickly fearing not to be able to focus otherwise.</p><p></p><p>Other remarks:</p><p>I did a similar test (Nikon vs Kenko 2X) with the 70-200 @200 at dawn: did not get a single reasonable image, if you push it too much ... it can not work.</p><p>I want to use single TCs with a better (ISO sensitivity) camera in lower light (issue with lower speed, but can use the larger image to make it smaller with more info)</p><p></p><p>=============================</p><p>Edit:</p><p>I forgot to mention: I did a test with 70-200 + Nikon TC 2X + Kenko TC 2X and then try to autofocus. The autofocus reacted and confirmed focus at f11. Canon users can never believe this, as far as I understand Canon blocks the autofocus when the f reading goes high.</p></blockquote><p></p>
[QUOTE="Vincent, post: 382579, member: 15675"] [COLOR=#333333]Teleconverters the truth 2: I was recently with someone who sold all his TCs, using the Nikon 28-300 and the Sigma 50-150 he coherently had better results without TC: This was the test set-up with my Sigma 500mm (50mm equivalent view): [/COLOR][ATTACH=CONFIG]125185._xfImport[/ATTACH] Principle was to use the best f stop. The eye in the pictures was too small to come to reasonable results so I had to crop the head: TC 1,4X [ATTACH=CONFIG]125186._xfImport[/ATTACH] TC 2X [ATTACH=CONFIG]125187._xfImport[/ATTACH] TC1,4+2 X [ATTACH=CONFIG]125188._xfImport[/ATTACH] So: 1) Probably better to not use a TC if you do not need to (depends on the Mpix you have, if you can crop a lot it will come out well) - don`t be lazy get closer - TC`s make you loose light, you need very good light to use them. Not early in the morning or late at night, except very good cameras. - when you reduce your field of view it is more difficult to find your subject and you amplify camera shake (technique is very important). - less TC will allow you faster shutter speed which is probably more important. 2) When to use a TC - excellent lens - low Mpix and low possibility to crop - when you need the more detail to be able to focus correctly - when your focus system needs a bigger subject to track correctly - when you need almost all the Mpix for the size of picture you want to print I forgot to take the picture without TC, ... it shows that I do not follow the recommendation, I grab the TC too quickly fearing not to be able to focus otherwise. Other remarks: I did a similar test (Nikon vs Kenko 2X) with the 70-200 @200 at dawn: did not get a single reasonable image, if you push it too much ... it can not work. I want to use single TCs with a better (ISO sensitivity) camera in lower light (issue with lower speed, but can use the larger image to make it smaller with more info) ============================= Edit: I forgot to mention: I did a test with 70-200 + Nikon TC 2X + Kenko TC 2X and then try to autofocus. The autofocus reacted and confirmed focus at f11. Canon users can never believe this, as far as I understand Canon blocks the autofocus when the f reading goes high. [/QUOTE]
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