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Archive 2017 · Decent, small zoom for A7RII?

  
 
wolfloid
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p.1 #1 · p.1 #1 · Decent, small zoom for A7RII?


Is there such a thing? An autofocus zoom lens that is above all small and light with decent enough quality, covering the mid range: 24 -70 or better still, a little longer at the long end? Slow does not matter. Has anyone made one yet?


May 26, 2017 at 04:04 PM
Sener
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p.1 #2 · p.1 #2 · Decent, small zoom for A7RII?


There is the aps-c 16-70mm f4. Can only work in crop mode on the cam but gives a plenty 15MP image to work with. Noticeably smaller and lighter than the FF 24-70 and the same Zeiss dust.


May 27, 2017 at 07:25 AM
AdaptedLenses
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p.1 #3 · p.1 #3 · Decent, small zoom for A7RII?


The Zeiss 24-70/4 is a good, useful lens. Doesn't have perfect corners if you pixel peep, but they aren't atrocious either. Does have above average color and contrast.


May 27, 2017 at 02:30 PM
wolfloid
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p.1 #4 · p.1 #4 · Decent, small zoom for A7RII?


Is the aps-c cropped image of the 42mp sensor really only 15mp?


May 28, 2017 at 01:34 PM
CalW
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p.1 #5 · p.1 #5 · Decent, small zoom for A7RII?


a7r2 FF @ 3:2 is 7952x5304 = 42,177,408 pixels
a7r2 APS-C @ 3:2 is 5168x3448 = 17,819,264 pixels

This is size when APS-C is selected in the menu. I do not
have an APS-C lens to try to see if it is the same when the
size is set automatically with an APS-C lens mounted.

I'd be interested in knowing. Anyone?

Edit: Corrected my poor math

Edited on Jun 08, 2017 at 09:36 AM · View previous versions



May 28, 2017 at 04:09 PM
CalW
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p.1 #6 · p.1 #6 · Decent, small zoom for A7RII?


My A6500 just arrived, and I tried the kit lens on my a7r2. APS-C mode was auto selected and the 3:2 image size is the same as above, 5168x3448 = 17,819,264 pixels.

PS: Considering the kit lens cost me about $89 taking into account the free battery, memory card etc. BHPhoto included, it looks like it could be worth the money

Edited on Jun 08, 2017 at 09:46 AM · View previous versions



Jun 07, 2017 at 06:51 PM
tzhang4284
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p.1 #7 · p.1 #7 · Decent, small zoom for A7RII?


wolfloid wrote:
Is there such a thing? An autofocus zoom lens that is above all small and light with decent enough quality, covering the mid range: 24 -70 or better still, a little longer at the long end? Slow does not matter. Has anyone made one yet?


I found the best option for this range is the rx100. As someone else mentioned, the 24-70 f4 is good but not great and doesn't really hold up to pixel peeping. If you have no plans to pixel peep or demand the best detail, then the rx100 is a better solution and cheaper than even a used 24-70mm f4.

The weakest point on the 24-70mm is the long end at 70mm - it's the best at around 35mm based on the copy I had. I think the 28-70 kit lens might fit what you need too for an even lower cost although the image quality isn't particularly great either.



Jun 07, 2017 at 08:05 PM
genji
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p.1 #8 · p.1 #8 · Decent, small zoom for A7RII?


CalW wrote:
a7r2 FF @ 3:2 is 7952x5304 = 42,185,368 pixels
a7r2 APS-C @ 3:2 is 5158x3448 = 17,819,264 pixels

This is size when APS-C is selected in the menu. I do not
have an APS-C lens to try to see if it is the same when the
size is set automatically with an APS-C lens mounted.

I'd be interested in knowing. Anyone?


It's what you stated above: 5168x3448 = 17,819,264 pixels (16.99 megabytes). Tested with a Sony E 50/1.8 on the A7R II.

7952x5304 is actually 42,177,408 and 42,177,408-17,819,264 = 24,358,144. So by using an APS-C lens on the A7R II, you're throwing away 57.75% of the pixels. Doesn't seem like such a great idea to me.



Jun 07, 2017 at 09:23 PM
CalW
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p.1 #9 · p.1 #9 · Decent, small zoom for A7RII?


genji said: "Doesn't seem like such a great idea to me."

I'm inclined to agree... Still wish there was a nice small zoom, though.




Jun 08, 2017 at 09:40 AM
wolfloid
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p.1 #10 · p.1 #10 · Decent, small zoom for A7RII?


Can Sigma make nice small zooms? I don't know, but most I've seen seem to be somewhat oversized. Can Tamron? Perhaps, if they try. Zeiss does not seem to want to make anything small anymore, which is a pity, because there is room for small and high quality, and short zooms made for the A7II generation cameras do not really need IS built in. Come on someone - Innovate!


Jun 08, 2017 at 10:39 AM
molson
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p.1 #11 · p.1 #11 · Decent, small zoom for A7RII?


Don't dismiss the FE 24-70mm f4 zoom - it's a very nice little lens if you get a good copy (buy it new, not used, and definitely not "open box" or "demo"). Unfortunately, there were a lot of really bad copies of the lens out there from the first year or so of production, but the last one I bought seems fine.


Jun 08, 2017 at 11:42 AM
notherenow
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p.1 #12 · p.1 #12 · Decent, small zoom for A7RII?


I like the 28-70 kit lens. Not sure how well it goes on the A7Rii but on the A7 (sold) and A7s at least I like mine.

Given good copies, I think the 28-70 may be a bit sharper in the centre than the Zeiss 24-70 but not as sharp away from the centre and of course doesn't go to 24mm.

My cheap and cheerful solution for a smallish zoom to reach 24 (actually 23mm is even usable somewhat) is the Canon 18-55 IS ii kit lens.
Again, not sure how it would go with the 42mp A7Rii but it is ok on my A7s.

Covers FF from around 23mm (some darkening in the corners) and of course can be used in APSC mode.

Stabilized and (slow) AF.

Bonus is I also use it on a Fotga adapter that has a spot that I can put 43mm filter glass in.



Jun 08, 2017 at 03:03 PM
arduluth
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p.1 #13 · p.1 #13 · Decent, small zoom for A7RII?


wolfloid wrote:
Can Sigma make nice small zooms? I don't know, but most I've seen seem to be somewhat oversized. Can Tamron? Perhaps, if they try. Zeiss does not seem to want to make anything small anymore, which is a pity, because there is room for small and high quality, and short zooms made for the A7II generation cameras do not really need IS built in. Come on someone - Innovate!


Problem is, if you want a small zoom, you're going to need to accept some compromises. Slow, bad corners wide open, etc. And then the melodramatic forum/blog/review site complaints start...

I'm not surprised that so many companies are chasing performance over everything else these days, as frustrating as I find it.



Jun 08, 2017 at 03:11 PM
AdaptedLenses
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p.1 #14 · p.1 #14 · Decent, small zoom for A7RII?


Sorry, but if you're looking at comparitive IQ, the RX100 series is incredible for what it is, but is still a 2.7x crop factor and can't play in the same game. I've been working on a project recently where small and light is the #1 priority. I tested an RX100III against a NEX-5T and 16mm prime / 16-50 kit. The APS-C kit won, and neither of those would hold up against the 24-70. I hate the 16-50, didn't want to reach that conclusion but it is what it is.

Again, the RX100 is pretty incredible for a 1" camera, but it has more false detail and noise than the larger sensors. It looks a bit sharper at first, but closer examination shows better fine detail of the larger sensor. Also, could be a mix of lens and sensor, but the RX100 image was a good bit flatter with less color depth.

tzhang4284 wrote:
I found the best option for this range is the rx100. As someone else mentioned, the 24-70 f4 is good but not great and doesn't really hold up to pixel peeping. If you have no plans to pixel peep or demand the best detail, then the rx100 is a better solution and cheaper than even a used 24-70mm f4.

The weakest point on the 24-70mm is the long end at 70mm - it's the best at around 35mm based on the copy I had. I think the 28-70 kit lens might fit what you need too for an even lower
...Show more




Jun 08, 2017 at 03:22 PM
tzhang4284
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p.1 #15 · p.1 #15 · Decent, small zoom for A7RII?


Take a look at the corner crops here:
RX100 V http://www.imaging-resource.com/PRODS/sony-rx100-v/sony-rx100-vA4.HTM
24-70mm http://www.imaging-resource.com/reviews/zproducts/sony24-70f4zfe/zz_sampleindex.htm
Sony 16-50 http://www.imaging-resource.com/reviews/zproducts/sony16-50f35-56e/zz_sampleindex.htm

My point is that the 24-70 and 16-50 are poor enough at certain points in the zoom range (e.g. 16mm for the 16-50 and 24mm/70mm for the 24-70) where if you are not pixel peeping, then the RX100 is more than enough. That said, if you are going to pixel peep and go for peak sharpness, then primes are a much better option than all 3 of these lenses. On center sharpness, I think there's a certain resolution advantage to the two larger sensor zooms but the corners are pretty poor where I'm not sure it's really worth it over a RX100.


Mathieu18 wrote:
Sorry, but if you're looking at comparitive IQ, the RX100 series is incredible for what it is, but is still a 2.7x crop factor and can't play in the same game. I've been working on a project recently where small and light is the #1 priority. I tested an RX100III against a NEX-5T and 16mm prime / 16-50 kit. The APS-C kit won, and neither of those would hold up against the 24-70. I hate the 16-50, didn't want to reach that conclusion but it is what it is.

Again, the RX100 is pretty incredible for a 1" camera, but it
...Show more



Jun 08, 2017 at 03:42 PM
CalW
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p.1 #16 · p.1 #16 · Decent, small zoom for A7RII?


I have the a7r2, RX1, and RX100iii. As said several times above, the RX100 is amazing for what it is - a pocket camera. At the wide angle end of its range, it can make some very fine photographs but I find that it falls apart quickly as the focal length increases. I have decided to buy an A6500 and see if it can better fill the walkabout and backup camera niche for me. It is gonna take a while, as I'll need at least one quality zoom ASP-C lens, and I have made no conclusions yet as to which. I have no real expectations of the kit 16-50, but considering the $89 that it actually cost me, I got it anyhow as a tiny snapshot option. And playing with it this morning, I have to say that it seems capable of accidentally making a really nice photograph occasionally on a sunny day


Jun 08, 2017 at 04:06 PM
johnvanr
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p.1 #17 · p.1 #17 · Decent, small zoom for A7RII?


To answer the OP's question: no, such a lens does not exist. Apparently...


Jun 08, 2017 at 05:43 PM





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