marike6 wrote:
peevee1 wrote:
marike6 wrote:
Landscapephoto99 wrote:
I can't speak for National Geographic since I don't work for them, but it only makes sense that more and more nature photographers would use the m43 system. Access to pro lenses, small, light, weatherproof (take a look at Ming Thien's shower test), excellent IQ?
What pro lenses? The 12-40 f/2.8?
And Pana 12-35/2.8. 4/3 14-35/2 if size suddenly not a big issue.
So it's your contention that the Panasonic 12-35 f/2.8 (a 24-70 f/5.6 lens in FF terms) is something that a National Geographic photographer would choose over a pro-grade FF standard zoom?
Over 24-70 on a crop camera? Easily. For FL reason, 24mm is not wide enough. Even 17mm of 17-55, especially on Canon, is not wide enough. And 17-55 are not even good at f/2.8. And when tele reach in needed, FF is a very difficult choice.
For low light event photography, 24-70/2.8 on FF is great. Except the weight, and the possibility to have not enough DoF for most non-flat scenes (and the subsequent need to shoot in Manual all the time).
Where are the super-telephotos up to 600 f/4 with matching teleconverters?
4/3 150/2, 90-250/2.8, 300/2.8.
As I said above, DPR is reporting that AF speed with native Four Thirds lenses is extremely sluggish.
S-AF is not sluggish. See videos for yourself. You invented that "extremely sluggish", nobody reported that about E-M1.
Sorry but that's not going to get it done out in the field when you are shooting for a publication like National Geographic where you travel to exotic locals and often have one, and only one shot to
I am not arguing for use of E-M1 for NG, but tasks of NG photogs, which are mostly landscapes and slow animal/people shots in good light, are mostly VERY easy compared to, say, indoor sports.
The Panasonic 35-100 f/2.8, again, 70-200 f/5.6 FF equivalent and no where near the same level of build quality as a Nikon or Canon 70-200 f/2.8 VR or L IS lens.
It is weather-sealed - what else do you need?
The 70-200 f/2.8 lenses take matching TCs, focus with lightning fast speed,
35-100 is not slower, probably even faster than 70-200 in S-AF.
have solid metal barrels, weather sealing,
Just as 35-100.
Of course they need collars (and tripids for them) for 1.5kg lenses. No need for 360g lens though.

It is ADVANTAGE.
So the $1500 35-100 f/2.8 is an OK lens, it is not equivalent to a high grade 70-200 f/2.8 Canikon zoom.
Close enough.
The high grade UWA zooms?
Pana 7-14/4 is not bad. Well, there is also 4/3 Oly 7-14/4, and simpler 9-18 and 11-22.
14-28 f/8 DOF equivalent simply is not going to get it done in all kinds of lighting the way a pro-grade f/2.8 UWA zoom will.
For landscapes/interiors where UWAs are primarily used, you need all the DoF you can get. Even in low light - say, blurred corners of the room (because they simply do not fit into DoF) do not work.
But I am still not convinced that even E-M1 can actually track quickly and reliably in low light even at 6.5 fps (which is not enough to be competitive even if it works). Especially with 4/3 lenses. It is not a lens problem, it is sensor and processor and algorithm problem.
DPR's EM-1 preview talks about AF speed / accuracy with Four Thirds lenses.
The EM-1 could be a useful body for travel photography where small camera size is important, but it's unlikely to replace any of the FF gear that National Geographic photographers use.
Don't care about those few NG photogs, but if a photog are going to hike to get a picture, he better take E-M1 (or E-M5) +7-14/4+12-35+35-100+100-300 than the equivalent FLs in FF, because the latter kit will simply break his back, so he will get no pictures at all, better quality or not.