Andre Labonte Offline Dedicated FM Upload & Sell: Off
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Kerry Pierce wrote:
Andre Labonte wrote:
Ah, good to know it works the same. Thanks for the follow-up. I'm not surprised that even the 1.4TC degrades image quality from the 85PC ... the lens is so darn sharp to begin with just about anything other than tubes will. My only reason for wanting to use TCs with a micro lens is to get adjustible working distance. It almost souns like the trade-off is not worth it and I should forget about that aspect.
That's what I use TC's for, with my macro lenses. Whether or not you should forget about it, depends on what you do with your macro shots. Mine are not usually destined to large prints and the vast majority of my macros are simply for my enjoyment. The exceptions to that would be flower shots, which are usually done with the 70-180 micro and I don't use a TC with that lens.
The PC lenses are 1:2, IIRC. I've not tried a TC on my PC lenses, but a TC should take them to or beyond 1:1 capability, I think. That kind of magnification requires the best technique and support system, to get the best shots.
I use a 1.4 TC on the sigma 180 macro quite frequently, less so on my tamron 90. Of course, if I didn't have the 180, I'd use the TC on the tamron much more frequently. My support system and technique are not the best and it's a struggle to make real gains in resolution at the highest magnification levels. My focus rail is pretty mickey mouse, for example.... Mostly I use a TC to gain working distance, without going to or beyond 1:1 magnification, where it works fine, within the limitations of my skills and support system.
I've also used the 1.4 TC on my 100-300 f/4, when shooting closeups. Of course, that doesn't get me anywhere near 1:1 magnification, but it works fine. I've been wanting to try some tubes on the 100-300, but haven't gotten around to it. I have the kenko tubes, which aren't real good for stacking. I now have the pb-4 bellows, which I'll try to use with the 100-300 next year. My outdoor macro season is just about over for this year.
Kerry,
Thanks for the input. Lots for me to think about here, especially given some of the great close-ups I've see you post. I have had good luck with TC's for work well away from 1:1, but not nearly as much macro experience. I have used a crazy combo of TC, tubes and a 500D on my 70-200 to get 2:1 reproduction with a 13" working distance from the 500D! I was surprised by the quality of it, but talk about a setup that takes forever to set up. I want to simplify my life without adding too much bulk or cost. In an ideal world I just get a 105VR, 85PC, 70-180 micro and a 200mm micro and be done with! That would mean as many micro lenses as I have regular lenses .... ah, to have $$ and muscles.
Thanks again for the post. I'm thinking on it.
Cheers,
Andre
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