Will using this change the minimum focusing distance? For example - my 70-200mm f/2.8L has a minimum focusing distance of 1.5m - if I use this will I still be able to focus on objects 1.5m away or will they need to be farther away?
1109120
Daniel, It's been a while since your post, so you may not need to this info anymore, but I'll pass it on anyway. I would suggest reading the link below for all kinds of info relating to Extenders and Extension Tubes. The answer to your question, which is also on the following link, states: "Most extenders are designed to retain the focusing range of the original lens". http://www.bobatkins.com/photography/eosfaq/closeup2.htm
424999
You do not use the zoom to focus, you use the focusing ring to focus. Two totally different things. The zoom changes focal length, the focus ring changes focus.By the way, I am a pro photographer since 1965. It will work best with a prime lens. They are sharper than zoom lenses.
436677
Yes and no. It will turn your lens into a macro lens. You will not be able to keep this on your lens for everyday use, with the ability of closer focusing. You will only be able to focus up to a few centimeters away.
447639
I've been using mine for a long time now and never had any focusing issues. One of my favorite lens. I was so pleased with it I also now have the 30mm f1.4
2264485
The chip is worth it for the metadata. I've found that it's actually hard to miss focus with this lens. I use the focus scale on the barrel and hardly ever look through the viewfinder to focus. Look up hyperfocal distance for 14mm and use those values. I usually just use the 3 foot mark on the lens barrel unless I'm trying to get something really close to the lens in focus. And by close I mean a foot.
797770
According to the Panasonic lens chart for the 14-45 lens, the minimum focus distance is 1 foot or 12 inches. I haven't tested the G1 in the more traditional macro/close-up type approach. I didn't get the impression that the camera likes getting closer than 12".From @2-3', I was able to engage the Extended Zoom (2x) + 4x digital + a Tcon 1.7 teleconverter (1200mm) and got surprisingly good results. I'm not suggesting you do it, but it worked.
466968
No, it's a fixed magnification. You can adjust the focus by getting closer or farther away from the object you're magnifying.
1978914
I haven't gotten mine yet, but I ordered it. I think I read that the silver ring on the front of the lense is how you adjust the focus...give it a try! If it doesn't work, contact the seller or something.
1235278
Unlike a zoom lens with a range in f stops such as a zoom with f4 to f5.6 the minimum f stop can change with different zoom settings. There are zoom lenses with constant f2.8 that can be set to an f2.8 at all zoom ranges. This lens is not a zoom lens but a fixed focal length. The minimum f stop of 2.8 can be set so it would be the same at any distance shot if one is using the aperture setting (AV) or manual setting (M). However if one has the camera at program (P) or speed (TV) settings and the lighting is different the lens will automatically change the aperture for the scene depending on the brightness of the subject in the frame.
1875333
This is strictly for macro. Focusing on anything that isn't at the closest focal point is impossible. It is also recommended that you use a lens with a shorter zoom level. This is basically incompatible with my 250mm. I can only imagine how much worse it is with a 400mm.
1489424
Different lenses seem to have slightly different flange distances that effect whether you can achieve infinity focus - try to search by your lens model in forums or purchase an ultra thin style adaptor odds are if you have several lenses you'll need adaptors of different thicknesses - fortunately theyre not expensive
700425
I've been reading reviews and have seen complaints from those who have upgraded to Hero 3 that the sharpest focus is about 4' away. It does not focus to infinity as it appears older models did. Does anyone have any feedback on that? We want to have focus at long distance while doing long distance motorcycle touring.
1810953
either the 200 2.8L or 70-200 2.8L are excellent for that purpose. They are significantly better than the lenses you own. In that focal length they are top of the line.
1427352
The minimum focus distance for the 135mm is 3 feet, and I don't know if you add anything more to that with the 1.4x on it, but at any rate 3 feet is too far away for macro. You'll get very close shots, sure, but it's just impractical for macro. You'd be better off with a dedicated macro lens like the 100mm/2.8.
2198943
I have this combo. Auto focus is very very quick at 150mm-350mm. Slows down little post 350mm. Focus from ~ to minimum distance is OK at mm, but from minimum to infinity speed at mm is very poor.
606483
I have these lens and I cannot use the autofocus, only manual. It won't focus no matter at what range. So disappointed..
2208276
You can focus to within eight inches away of your subject. But remember that this is a wide angle, 24mm equivalent lens, so even at a close up distance, you will get more into your frame than you would with a longer lens. You must also be aware of potential wide-angle distortion.