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Lenses
General Lenses
of TCs and ET's and Snap-ons with a Super-Zoom like the Sigma 18-250
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<blockquote data-quote="Fortkentdad" data-source="post: 658573" data-attributes="member: 24285"><p>I did find that putting the Kenko TC on my older 105 AFD 2.8 Nikkor Macro. I was looking at the 180mm macro's and my wallet would not open that wide. But given I almost always go manual focus in macro and turn up my F stops as high as I can to get the most depth of field for my macro shot. Will have to get that combo and and try it again. 140mm macro or 210mm macro. Yes. </p><p></p><p>I am aware of the dangers of glass to glass contact on some TC's and some wider lenses. This can be checked before mounting to see if the glass extends when dialed wide. </p><p></p><p>I am blissfully unaware of any other dangers to the camera or lens, so this was just some 'what if' playing with the toys I have. </p><p></p><p>On a 250mm lens 1.4 adds an extra 100mm and while that may sound like a lot and it is nice, it isn't the same gain as I get on my 200-500 which on a APC goes from 500 to 700 and then if you follow APC crop factor you get the FOV of a 1050 lens on a FX camera. And I have used the 1.4 on my big zoom and it works just fine. But only when the light is very good as you go to F8.</p></blockquote><p></p>
[QUOTE="Fortkentdad, post: 658573, member: 24285"] I did find that putting the Kenko TC on my older 105 AFD 2.8 Nikkor Macro. I was looking at the 180mm macro's and my wallet would not open that wide. But given I almost always go manual focus in macro and turn up my F stops as high as I can to get the most depth of field for my macro shot. Will have to get that combo and and try it again. 140mm macro or 210mm macro. Yes. I am aware of the dangers of glass to glass contact on some TC's and some wider lenses. This can be checked before mounting to see if the glass extends when dialed wide. I am blissfully unaware of any other dangers to the camera or lens, so this was just some 'what if' playing with the toys I have. On a 250mm lens 1.4 adds an extra 100mm and while that may sound like a lot and it is nice, it isn't the same gain as I get on my 200-500 which on a APC goes from 500 to 700 and then if you follow APC crop factor you get the FOV of a 1050 lens on a FX camera. And I have used the 1.4 on my big zoom and it works just fine. But only when the light is very good as you go to F8. [/QUOTE]
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of TCs and ET's and Snap-ons with a Super-Zoom like the Sigma 18-250
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