So it may come down to whether or not you can count in having time during the wedding shoot to muck about with tubes, or not. After all...time is money.
Neuro is right with mucking about. I have a 50/2.5 macro with lifesize converter, a 250D closeup lens and an EF25mm extension tube.
I would not recommend tubes for what you want. The process would be:
- remove existing lens
- attach tube
- attach lens to front of tube
- take photo
- remove lens
- remove tube
- replace lens
Yeah, that process sounds like BLah!!!!
I use the tube on my 200/2.8 when taking photos of flighty subjects.
For most convenience would be the 250D closeup lens. Assuming you are shooting the 85, you simply need to screw it onto the front. my 50mm has same filter size so I should be able to use this on both? This will give you between 1/3 and 1/2 life size, which is fine for wedding rings. which is pretty much the only reason I am thinking macro This will give you sufficient working distance. The closeup lens could stay in your pocket. Quality of the Canon produce is absolutely fine for your purposes, not "rubbish" as claimed by another poster. I have to wonder if the "rubbish" comment is because that poster assumed I will be making a bigger plunge into macro, but no, just really thinking ring shots I would get one to suit the lens you will use most often and not get a larger (and much more expensive) closeup lens with step-up ring. That would most likely be my primes then, because within the next year I should be upgrading my 70-200 to the v2IS...which has the larger filter thread
Next option would be a dedicated macro lens. The 50/2.5 would be fine for your purpose, even though it only goes down to 1/2 lifesize. Advantages: cheap and relatively small - you want to minimise gear that you carry around.
The 100/2.8 macro is a little more expensive and goes to lifesize, but is much bigger. You then have 50, 85, 100, 135 and 70-200 which is quite a focal length overlap for someone who will need to carry gear around. Yeah, my bag is already pretty full! I don't yet have the 135...but, i have a feeling I will at some point this season
I've done a few weddings. The key is to be fleet on your feet and not be encumbered with gear. that is exactly why I am looking to find a way to get a little closer to the rings without having to add another lens to the mix Hence, my suggestions.
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