A7C new line of lenses

Started Sep 15, 2020 | Discussions thread
morinor Senior Member • Posts: 1,073
Re: A7C new line of lenses

Mr_Win wrote:

The 10-25 is NOT a mistake and a terrific lens if you want a FF like lens that is capable as a single lens solution, especially for video. A MFT video centric camera + 10-25 is arguably the most powerful single lens solution you can get in ANY sensor size, and it matters less for video. I've got the A7siii on order and I cant really replicate that setup, so I need two lenses to cover ultra wide to short telephoto..... that said, a two lens combo on FF will be better than the 10-25. In my case the 17-28 + 28-75 beats the 10-25 in all scenarios, video and stills..... but then again, it's two lenses.


This lens is really big. You should have a G9 body to use it more normally. I am using a 70-200 f/2.8 which has even much weight and related size difference with the body, but it is also that grip that makes it easier to handle the lens. G9 body I can think it to be used only for those needing large focal lengths for wildlife or outdoor sports. They can have then the option to get this lens for their daylife routine, while having a close to FF results with a zoom lens. If somebody it not using apertures usually below f/5.6 FF equivalent, then yes again MFT with a little larger body like the G90 or e-md 5 can make sense. Usually this area can be served with an APS-C body. MFT must thrive in my opinion on what is offering: being able to get smaller as the sensor is smaller. So compactness should be the target and not the FF results most of the times.

Of course there aren't a lot of lenses out there serving the 20-50mm FF focal range. But 24-70mm FF focal range can be more usable for more people as it covers also the small tele range and 24mm are usable for most landscape.

there are other very compelling lenses for MFT, the 15 f1.7 is amazing, paired with the 7.5 f2 laowa and 42.5mm f1.7 panasonic, you have a rather complete setup, that's acceptable in low light. It's around 350g worth of lenses? hard as heck to match with FF. Sure, FF gives you more DOF control, but what if you're satisfied with 1.7 on MFT, then it makes a compelling case, and it's one of the big factors why I have kept that system around, despite having a FF setup. If the GH6 can match the A7siii, I think I would take around my MFT system more than my FF because I enjoy the massive weight savings.

If those primes fits your needs, then that is ok. For me there are many cases that I need more than f/2.8 in order to keep image quality high enough. DoF control is something that also interest me more than weight and size. In those cases that weight and size can be a problem, I got with me a really light and small camera (GX80 + 12-32mm lens).

On the other hand, FF has progressed extremely well compared to my DSLR days, and in general, my kit is much smaller. The 24 GM is astounding, the 85mm f1.4 options are incredible, and I honestly dont need a ton more. Add on the 17-28 and 28-200, and you have a rather capable system.

Actually comparing Sony A7 III with Sony 85 f1.4 GM against Nikon D750 with Sigma 85mm f/1.4 I see a 505 gr difference.

comparing Sony A7 III with Sony 24 f1.4 GM against Nikon D750 with Nikon 24mm f/1.4 G I see a 365 gr difference.

There actual size and weight differences moving from DSLR to ML more than actual A7C can offer against a A7 III.

We are living in the golden era of cameras and lenses, so many good options.

Actually it is the time of matured products. And that is good as you get a complete product with few things to be missing here and there as new ones are released. That is bad though as you do not find many gains after an upgrade, so you do not get interested into spending money for camera and lenses. Manufacturers then do not see the profit they want you see and then the market begins to stagnate.

morinor wrote:

Impulses wrote:

morinor wrote:

Impulses wrote:

cyberpi1 wrote:

morinor wrote:

For me, MFT is the true pocketable option with a zoom lens, while a rangefinder Nikon Z DX would be a greater compromise to something larger or a Sony APS-C camera if Sony improves its old not and so good 16-50 kit lens.

Quit reading from this point.

The MFT is limited with it's "pocketable" lens. Put some good lens on it and here we are - no difference.



Yes, I know 100-400 on MTF give you different equivalent FOV. But A7Rx you can crop from 42-60mpx and there you have it - 800mm equivalent.

Back to the topic - I'd like to have small decent zoom like 60-150 even a dark one. But I don't this Sony is going to release something like that in the nearest future.

Yeah, small teles (be they primes or zooms) are still the one highlight of M4/3 gear for me... My Oly 75/1.8 is still an order of magnitude smaller than any FF 135mm w/AF, even an f2.8, ditto my Pana 35-100. I'd like to see something like the Tamron 70-180 but slower and smaller, seems like anything slower is xx-300 or longer and if not then it's internal zoom and larger. It's kinda odd that the smallest FF teles end up being the xx-200 superzooms.

That depends. If you are ok with a zoom lens having a f/5.6-10 maximum aperture at one end and f/5.6-13.4 at the other end (FF equivalents). For me those values are too limiting for daily usage.

I'm fine with f5.6 equivalent at 70-200mm tbh, particularly for daylight shooting where even an (internal zooming) FF 70-200 f4 would be massively larger... I mostly use the long end of that zoom tho, f5.6 at 70mm is pretty limiting for subject isolation, that I'd agree with.

That can be of personal taste. I have a FF 70-200mm f/2.8 in order to work even on situations with not so much light. Subject separation is also something that interests me that I want to have the option to use lower F-number.

On a FF you can get an not so much expensive kit lens reaching f/3.5-6.3 across the whole available focal lengths, without having a large penalty on size and weight.

I was talking about teles tho, not kit lenses, what f3.5-5.6 FF tele zoom has a small size penalty vs the 35-100 I mentioned? That lens is barely 4" and 300-some grams btw. FF tele zooms outside of a couple superzooms start at roughly double the weight and a much larger volume (5.5" w/67mm threads vs the 58mm of the 4" 35-100).

Of course FF f/3.5-5.6 is able to gather more light than the mentioned Lens. It is natural to have more weight and size. There isn't something equivalent on FF cameras at the moment. Still even those f/3.5-5.6 are enough light and small to be inside a small bag. With Panasonic 35-100 you still need a bag which just being smaller. You carry something at the end on your shoulder or neck. Weight and size differences are mostly on numbers than issue on real life.

If lens makes also would want to close that debate with MFT could have released much slower, smaller and lighter FF lenses. For having a similar price something like that could have done on APS-C cameras.

The teles I'd want don't seem to exist for APS-C either tho, that was kinda my point. Why does every FF tele have to be either f4 and internal zoom, or xx-300mm+, or longer? Why can't we have an external zooming 70-200 f4 a la Tamron's 70-180 f2.8? Such a lens would get much closer to M4/3 teles. If they can make a ~4.5" 600g 28-200 then they can surely make a 70-200 that's no slower, possibly smaller, and optically better. Nobody has chosen to do so tho.

As I have stated if you find enough to use higher F-numbers, then of course at the moment you have no other option than MFT in order to gain weight and size advantage. Tamron 70-180 f/2.8 it is a quite good lens for that specifications. There is a lot of marketing even behind the design of lenses. Why almost all lenses use f/3.5-6.3 ranges, regardless the size of the sensor? There are a lot of focal lengths that are always the same 24-70mm, 70-200mm, 70-300mm, 24-105mm, 24-200mm, 100-400mm, 150-600mm. There are some exceptions only, like the Tamron 35mm-150mm f/2.8-4, which maybe are not always so much successful. Also the variable aperture zoom lenses have this characteristics because actually they move their elements further while keeping the same opening. I do not know if it is so much easy to design a constant aperture zoom lens which extends. Also those designs that you do not like although you pay it with size, they are more weather proof. Dust and moisture can pass into the lens that the lens maker must have a really good design to not let them pass through.

Your Olympus 75mm f/1.8 lens must is more near an 150mm f/4 than a 135mm f/2.8 FF lens. There is no similar modern FF lens to compare with and that is the real issue. If that aperture range is enough for you then that it is ok. Still this lens is slightly larger than the collapsible zoom lens offered with Sony A7C.

Why would you compare a kit zoom with a 150mm equivalent prime tho? Technically the Oly is an f3.6 equivalent too, not sure why you fell the need to round up there. The shooting envelope is not gonna transform drastically by having a 2/3rds of a stop advantage, but the 2.75" 300g lens will be a lot easier to take to a variety of events than a ~4.5"+ 600g lens. I've never been stopped at a concert when bringing that Oly in.

I mention it as an advantage against the compactness of a FF camera and lens. Although it is a 150mm FF equivalent lens which is not collapsible or pancake. Similar lenses must be designed for Sony A7C as an example to support why you promote compactness.

Actually on primes and collapsable zoom lenses you can see some more usage on MFT system. Primes can be around f/2.8-3.6 FF equivalent range that can be a lot more useful while the camera and lens can be around as small or smaller than a FF with a pancake lens. I have the Panasonic 12-32 mm f/3.5-5.6 lens (24-64mm f/7-11 FF equivalent) on a Panasonic GX80 camera and this combo can fit into a large pocket.

I like my 12-32, but it's really one of the few examples < 75mm where M4/3 has a size advantage anymore. Those f1.4-1.8 M4/3 primes are often not any smaller than FF options anymore. The Samyang 45/1.8 is virtually the same size as the Pana 25/1.7 or PL25/1.4. The 35/2.8 isn't much larger than the Pana 20/1.7. The Samyang and Sony 35/1.8 might not be quite as small as the Oly 17/1.8 but they're far smaller than the Oly 17/1.2 or Sigma 16/1.4. The Sony 28/2 isn't far off from the far pricier Oly 12/2.

The f/1.4-1.8 MFT are still much smaller than FF equivalents. Of course there are some exceptions. The PL 25/1.4 is more than 1 cm smaller than the Samyang. The Samyang 35/2.8 is similar with Panasonic 20/1.7 because there are close to be equivalent. Samyang options remain the few options to attach on Sony A7C and be compact. But how much you pay for something similar? Compare Sony A7C+any Samyang lens against a GX9 + f/1.4 lens and you will see what I want to say where is the issue to try to have a compact FF body.

About f/1.2 lens in my opinion are not worthy options on MFT. They need a larger body to be handled, similar with a FF ML camera. This PL 10-25 f/1.7 is a mistake at that size, weight and price in my opinion. Your MFT camera needs again to be the same size as a FF ML camera to support it and those cameras are not even cheaper than some FF cameras.

So on and so forth, there really isn't much of a size advantage to M4/3 (or APS-C) primes from UWA thru normal anymore. That size advantage starts being more relevant again at 75mm+ (actual) tho. Slower super zooms and that pancake are the only other bastion left for smaller formats.

There are still at tele primes even at 85mm FF equiv. and beyond. As a system MFT using slower zooms and pancakes is the advantage regarding size and price, because the camera body can also get smaller and cheaper. Pancakes find their natural reason to exist here and not on a FF camera body that it is expensive and usually large enough to be pocketable. Slower zooms are just not design with the same characteristics for FF bodies. Still in my opinion the faster FF kit lenses are small and light enough.

An APS-C camera could be near to do that , but still even their most collapsable zoom lenses are not small enough and the selection of pancake lenses are even smaller than on MFT. A FF camera is not even near to that.

To be clear, M4/3 has 2 or 3 worthwhile pancakes... The 12-32, the 20/1.7, and the 14/2.5 (and a lot of people end up picking either that or the zoom, so really 2 for most), it's not like there's a bonanza of them. The Oly pancake zoom is weaker than the Pana and the 17/2.8 is discontinued (for good reason). I guess there's the body caps if you wanna count those, tho only the fisheye is worth a damn.

I think flange distance plays a large role in what fast-ish pancake primes work well on certain formats, which is why you only tend to get 1 or 2 decent ones per system.

I agree that there are not a lot of pancake lens generally not only MFT. 14/2.5 is not an option for me as near f/2.8 MFT prime lenses are too dark for me. The 12-32 and 20/1.7 are options though that made me to select MFT over a Fuji APS-C camera. The only other option of having something so much compact with at 24mm FF equivalent focal length is that provided by Samyang and the Nikon Z DX 16-50mm. Fuji or Canon APS-C collapsible lenses are still large enough.

The PL 15 f/1.7 is also another compact design to consider.

There are also some cheap and small enough designs from Chinese companies that can support further the MFT compactness. The 7artisan 35mm f/1.2 or the MEIKE 35mm f/1.4 (which I have ordered now) although not optical marvels, they can be used while still being compact. The produced images is still a subjective matter.

If I can have something in a bag and not a pocket, even for me a FF DSLR is what I use. I can see for some wanting to have the same results with a smaller FF ML body. Still with large lenses the difference become really small, if not an issue.

E mount has already got plenty of small lens options from UWA thru 75mm, and relatively small but high quality super zooms and UWA zooms, there's not much of a size advantage for smaller formats in those instances. Longer teles are another story tho...

 morinor's gear list:morinor's gear list
Nikon D750 Panasonic Lumix DMC-GX85 Nikon 85mm F1.8G Sigma 35mm F1.4 DG HSM Art Nikon AF-S Nikkor 20mm f/1.8G ED +5 more
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