EOS M (Should I buy or wait till next model)

[doodah]

You can't compare lens design like that. The very nature of the smaller m43 sensor size allows such lens design on m43 lenses.
70-200 is a FF lens. Not apsc.
If u were to compare, compare with sigma 50-150/2.8 more appropriate. The best that canon (and Sony n Samsung) can do for their mirrorless, when it comes to fast Tele zoom, is to create sigma 50-150 equivalent and shave off a few mm in each dimension, nothing more revolutionary than that in terms of size.

m43 and aps-c sensors are similar in size. The reason that m43 lenses is able to shave off huge weight and size is the shortening of flange distance. The removal of that bulky mirror box has a huge impact on lens design. The old 4/3 lenses are as large as APS-C lenses, so there is zero advantage in going down the 4/3 route. But once Olympus and Panasonic introduced mirrorless bodies, their lenses started to shrink in size and weight as well. Note the EF-M 18-55 f/3.5-5.6 kit lens is comparable in size and weight to Panasonic 14-42 f/3.5-5.6 kit lens (version without electric-powered zoom operation).

 

[silvermoon1407]

m43 and aps-c sensors are similar in size. The reason that m43 lenses is able to shave off huge weight and size is the shortening of flange distance. The removal of that bulky mirror box has a huge impact on lens design. The old 4/3 lenses are as large as APS-C lenses, so there is zero advantage in going down the 4/3 route. But once Olympus and Panasonic introduced mirrorless bodies, their lenses started to shrink in size and weight as well. Note the EF-M 18-55 f/3.5-5.6 kit lens is comparable in size and weight to Panasonic 14-42 f/3.5-5.6 kit lens (version without electric-powered zoom operation).

APS-C (Sony) and APS-C (Canon) are 60% and 45% larger respectively than m4/3, how are the sensor size near anywhere similar? If u talk about flange distance, both EF-M and Sony E mount has smaller flange distance than m4/3. So by your argument, m4/3 lenses should be bigger? No it isn't. Sony's and Canon's APS-C mirrorless kit lens is not significantly smaller than their DSLR/T counterparts w.r.t. their flange distance ratio, so while removal of mirror box does cut down on lens size, it's only by abit as previously mentioned. Come to think of it, the panny 14-42 non-PZ is relatively huge - that's a poor lens design IMO.

You previously mentioned about the nice size of the m4/3 fast zooms. APS-C mirrorless hasn't implemented such lenses to their line-up, simply because given current technologies, there is only so much they can shave off the size of their current equivalent DSLR/T lenses e.g. 16-50/2.8, 50-150/2.8 to fit their mirrorless bodies, and they will still look awkwardly big, defeating the purpose.

Not saying it's impossible, but it will take more than a while for such revolutionary design...

 

[ageha]

APS-C (Sony) and APS-C (Canon) are 60% and 45% larger respectively than m4/3, how are the sensor size near anywhere similar? If u talk about flange distance, both EF-M and Sony E mount has smaller flange distance than m4/3. So by your argument, m4/3 lenses should be bigger? No it isn't. Sony's and Canon's APS-C mirrorless kit lens is not significantly smaller than their DSLR/T counterparts w.r.t. their flange distance ratio, so while removal of mirror box does cut down on lens size, it's only by abit as previously mentioned. Come to think of it, the panny 14-42 non-PZ is relatively huge - that's a poor lens design IMO.

You previously mentioned about the nice size of the m4/3 fast zooms. APS-C mirrorless hasn't implemented such lenses to their line-up, simply because given current technologies, there is only so much they can shave off the size of their current equivalent DSLR/T lenses e.g. 16-50/2.8, 50-150/2.8 to fit their mirrorless bodies, and they will still look awkwardly big, defeating the purpose.

Not saying it's impossible, but it will take more than a while for such revolutionary design...

Yup and that's why m43 is the better mirrorless system.