LA-EA2: what lenses to get?

[kev777zero]

What I want from getting the LA-EA2 are more (& cheaper) options of lenses, better AF for action, AND being able to focus on what I intend on focusing (w/ CDAF NEX always manage to find a higher contrasting object in the background than the subject itself!); Hopefully these are good enough reasons for getting the LA-EA2?

Main issue for me though is that I am not familiar with DSLR/SLT lenses. I plan on getting a telephoto zoom & a fast prime. the Sony alpha lenses are rather pricey and doesn't seem to offer OSS, and I heard Sigma lenses don't offer stabilization anymore for Sony either.

The Tamron 18-270 seems like a viable option should the optics be at least okay on the tele end. Otherwise a 70-300 or even the 70-200 2.8 if I manage to save up. As for primes I'm thinking of the Sigma 30mm 1.4, and was wondering how it'll compare in use to the E-mount Zeiss? I would like to know if there are any good options from Konica-Minolta as well, or if there are any other suggestions

I may wait until the 5R/6 comes out as well to see if the on sensor PDAF can cure the current focusing issues, but if not I will be getting the LA-EA2 for the NEX-7 (or maybe it'll work even better w/ the 5R/6?)
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[Leaping Carp]

I'd check out the Sigma's - the OS works fine with the NEX (the below shots were both hand held with AF and OS on and in iAuto mode). I went for the cheaper Sigma 70-300mm with OS but for fastest focus you want something with HSM. I'm kicking around the idea of getting the 17-70mm but realistically the only thing I didn't have for my NEX was a good fast focusing lens beyond 200mm. I find the NEX AF to be fast enough to catch kids running in good light but the 18-200mm can hunt too much sometimes and is only 200mm. I've kind of written off the purchase of the LAEA2 as part of getting a 300mm lens with OS and AF so it's really more a part of that than an adapter I'll end up using for much else I think.

 

[pmow]

The Sigma 18-250 has OS and can be had on amazon for $295 used (with Amazon Prime return policy).

The SAL35F18 has been my workhorse now on the LAEA2 for a while now, but I have already preordered the SEL35 and expect it to be replaced soon. For me, the LAEA2 is better for telephoto because of size. The fisheye zooms might be something to look at, but it won't require OS.

 

[kev777zero]

So Sigma lenses still offer stabilization for Sony cameras huh? that 18-250mm deal seems like a nice steal. I wonder how it competes against other superzooms like the Tamron in terms of optics, focus speed, & build?
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[blue_skies]

Sony dropped OIS when they launched the IBIS in the alpha cameras. They also motivated third parties to do the same. Only 'older' lenses still have the OIS in the alpha mount. With an alpha-camera, I understand, the OIS and the IBIS do not work all that well together.

First, do you need OIS? If you only plan to shoot at daytime, and can maintain reasonable speeds, OIS does not do much for you. I use the A75300 at 300mm handheld with shutter speeds around 1/800 or faster with excellent results. The lens is a bit slow when it gets darker, but it cost me only $75. you can get the A70300G, but expect to spent at least 10x for a marginally aperture increase (but higher quality IQ).

My set of A lenses - all Sony DT/SAM - 35/1.8, 50/1.8, 85/2.8, 1855kit, 75300.

Check the prices - used or new - less than half the SEL lenses, with the kit and 75300 being absolute bargains ($75 each for me).

Using the LA-EA2, the 35 and the 85 are my most favorite lenses. I haven't used the 1855kit much yet, but RussellInCincinnati reported its excellent results, so I added it - many times stopping down is better for DoF and AF anyways.

Wide open, AF is not as trustworthy as it is when stopped down, but it still beats the SEL accuracy. E.g. when reporting events, such as graduation, etc., I find myself using DMF with the SEL all the time to assure focus, while with the LA-EA2 you can simply just 'shoot away' (I use A35 and A50 in such cases, with the E24).

What I want from getting the LA-EA2 are more (& cheaper) options of lenses, better AF for action, AND being able to focus on what I intend on focusing (w/ CDAF NEX always manage to find a higher contrasting object in the background than the subject itself!); Hopefully these are good enough reasons for getting the LA-EA2?

Main issue for me though is that I am not familiar with DSLR/SLT lenses. I plan on getting a telephoto zoom & a fast prime. the Sony alpha lenses are rather pricey and doesn't seem to offer OSS, and I heard Sigma lenses don't offer stabilization anymore for Sony either.

The Tamron 18-270 seems like a viable option should the optics be at least okay on the tele end. Otherwise a 70-300 or even the 70-200 2.8 if I manage to save up. As for primes I'm thinking of the Sigma 30mm 1.4, and was wondering how it'll compare in use to the E-mount Zeiss? I would like to know if there are any good options from Konica-Minolta as well, or if there are any other suggestions

I may wait until the 5R/6 comes out as well to see if the on sensor PDAF can cure the current focusing issues, but if not I will be getting the LA-EA2 for the NEX-7 (or maybe it'll work even better w/ the 5R/6?)
--
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--
Cheers,
Henry

 

[Klipsen]

Sony dropped OIS when they launched the IBIS in the alpha cameras.

No. Minolta invented and developed sensor-based image stabilisation under the name "AntiShake", a technology that Sony acquired with the purchase of Minolta's camera division, by then Konica Minolta's ditto.

They also motivated third parties to do the same.

No, other manufacturers' patent rights demotivated Sigma from making any lenses with OS - plus in-lens and in-body stabilisations cancel out one another (take it from someone who knows the importance of not leaving both systems on at the same time).

Only 'older' lenses still have the OIS in the alpha mount.

Only 'newer' Sigma lenses have OS, although not all do. Then again, not all their designs exist for other brands than Sigma, Canon and Nikon.

With an alpha-camera, I understand, the OIS and the IBIS do not work all that well together.

Together, they don't work at all, but I'm pretty happy with my 50-500 mm having OS, and for two reasons: it stabilises the viewfinder image, which is almost essential at long focal lengths, and it works with the NEX line as well.

On the Axx bodies, the viewfinder image comes from the main sensor and thus is stabilised if you use either system - but not both, which is good news for the forgetful.

I hope this helps to bust a few myths about image stabilisation, Sony and Sigma.

 

[blue_skies]

I think we are saying the same, but your response is not much clearer than I guess my earlier comments - see my remarks below

Sony dropped OIS when they launched the IBIS in the alpha cameras.

No. Minolta invented and developed sensor-based image stabilisation under the name "AntiShake", a technology that Sony acquired with the purchase of Minolta's camera division, by then Konica Minolta's ditto.

Yes, the Alpha Mount was called A mount by Minolta, and Minolta had already developed OIS technology in the lenses.

Per your other comment below, OIS and IBIS didn't work together, and Sony favored the IBIS for the Axx cameras, hence newer Sony lenses dropped OIS.

They also motivated third parties to do the same.

No, other manufacturers' patent rights demotivated Sigma from making any lenses with OS - plus in-lens and in-body stabilisations cancel out one another (take it from someone who knows the importance of not leaving both systems on at the same time).

This is confusing, because Sigma does put OIS in the non-alpha mount version of most of their lenses, they just dropped it for the alpha mount.

Maybe not motivated by Sony, but your comment that OIS and IBIS not working together is another great motivator.

Only 'older' lenses still have the OIS in the alpha mount.

Only 'newer' Sigma lenses have OS, although not all do. Then again, not all their designs exist for other brands than Sigma, Canon and Nikon.

Semantics - the OIS drop happened about 18 months ago or so. So lenses before that, but well after Sony had taken over the Minolta brand. Yes, 'newer' in the Minolta context, but 'older' in that they are no longer being planned/engineered.

With an alpha-camera, I understand, the OIS and the IBIS do not work all that well together.

Together, they don't work at all, but I'm pretty happy with my 50-500 mm having OS, and for two reasons: it stabilises the viewfinder image, which is almost essential at long focal lengths, and it works with the NEX line as well.

I second that - the stabilized image makes viewing easier and you shoot more assured. But again, with a fast shutter speed, a shaky viewfinder is not an issue. (I do shoot multiple shots if shaky, assuming one will be the best one afterwards).

On the Axx bodies, the viewfinder image comes from the main sensor and thus is stabilised if you use either system - but not both, which is good news for the forgetful.

Yes, LCD or EVF is the same.

In a DSLR you would be using the mirror, and only OIS would stabilize in the viewfinder, not IBIS.

I hope this helps to bust a few myths about image stabilisation, Sony and Sigma.

Me too.
--
Cheers,
Henry

 

[kev777zero]

er...so blue_skies, klipsen, or anyone else, if I buy a Sigma lens for alpha mount now, would there be stabilization if I used it with LA-EA2 on the NEX?

so say I'm getting the sigma 18-250mm; would they all have OS since this lens was announced before Sigma decided to take out OS for alpha mount, or will I have to search for the ones that were manufactured before they took out OS?

and I'll assume all the new announced sigma lenses for alpha mount has no OS...

not that OS matters a whole lot, but I have the SEL55210 now, and it just seems a bit odd for me to trade in OSS & spend double the price (18-250+LA-EA2) just for better AF
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[headofdestiny]

blue_skies, Minolta has never used OIS in SLR/DSLR lenses. They went straight from having no IS to using the sensor-based IS that Sony eventually took over and uses to this day. Sigma didn't bring OSS to Sony lenses until few years ago, well after sensor-based IS had already been established in the Minolta and Sony a-mount system.

There are no Minolta or Sony made a-mount lenses with OIS.

 

[Leaping Carp]

Yes, OS works, at least on my 70-300mm and many others.

Faster AF and more accurate but not much faster unless you spend more money for HSM lenses. It's not that it's slow but the NEX is much faster than people think (when you set it up right ). You're going to get what you pay for so if you pay more you'll get faster focusing lenses.

 

[Annex]

er...so blue_skies, klipsen, or anyone else, if I buy a Sigma lens for alpha mount now, would there be stabilization if I used it with LA-EA2 on the NEX?

so say I'm getting the sigma 18-250mm; would they all have OS since this lens was announced before Sigma decided to take out OS for alpha mount, or will I have to search for the ones that were manufactured before they took out OS?

and I'll assume all the new announced sigma lenses for alpha mount has no OS...

not that OS matters a whole lot, but I have the SEL55210 now, and it just seems a bit odd for me to trade in OSS & spend double the price (18-250+LA-EA2) just for better AF
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Without being unhelpful you need to check the particular lens you want. Many older sigma a mounts still have OSS however some of the newer ones dont.

I have the following Sigma A mounts:

• 8-16mm - This has no OSS and doesnt need it at that wide anyway
• 70-300mm - This has OSS which works fine through an LA-EA2

Watch out though, there are 2/3 variants of the 70-300, not all of which have OSS.

 

[viking79]

What I want from getting the LA-EA2 are more (& cheaper) options of lenses, better AF for action, AND being able to focus on what I intend on focusing (w/ CDAF NEX always manage to find a higher contrasting object in the background than the subject itself!); Hopefully these are good enough reasons for getting the LA-EA2?

Main issue for me though is that I am not familiar with DSLR/SLT lenses. I plan on getting a telephoto zoom & a fast prime. the Sony alpha lenses are rather pricey and doesn't seem to offer OSS, and I heard Sigma lenses don't offer stabilization anymore for Sony either.

The Tamron 18-270 seems like a viable option should the optics be at least okay on the tele end. Otherwise a 70-300 or even the 70-200 2.8 if I manage to save up. As for primes I'm thinking of the Sigma 30mm 1.4, and was wondering how it'll compare in use to the E-mount Zeiss? I would like to know if there are any good options from Konica-Minolta as well, or if there are any other suggestions

I may wait until the 5R/6 comes out as well to see if the on sensor PDAF can cure the current focusing issues, but if not I will be getting the LA-EA2 for the NEX-7 (or maybe it'll work even better w/ the 5R/6?)

My thought on this matter is that the LAEA2 is for someone who has a NEX for compact size, but maybe already has some existing A mount lenses to use and they want an easy transition to NEX.

Another thought is if you are unhappy with the NEX in terms of AF, etc, maybe you don't have the right camera and maybe an A77, A65, A67, A57, or similar SLT would be a better choice? This will give you in body shake reduction.

I.e. in my opinion the LAEA2 is an adapter for when you sometimes use A mount lenses but want good focus, etc, but if you are going to use it all the time it doesn't seem like the best route.

If I were to buy lenses for the LAEA2 I would probably go with something you can't get on E mount easily, or a lens that would take advantage of the faster AF speed, etc.

Eric
--
I never saw an ugly thing in my life: for let the form of an object
be what it may - light, shade, and perspective will always make it
beautiful. - John Constable (quote)

See my Blog at: http://www.erphotoreview.com/ (bi-weekly)
Flickr Photostream: http://www.flickr.com/photos/28177041@N03/ (updated daily)

 

[blue_skies]

Thanks for the feedback - I stand corrected.

I have a friend with Axx cameras here who used to have a Maxxim 7000 (if I remember correctly). I always thought that his 28-105 and 100-300 lenses (or so) did have OIS.

blue_skies, Minolta has never used OIS in SLR/DSLR lenses. They went straight from having no IS to using the sensor-based IS that Sony eventually took over and uses to this day. Sigma didn't bring OSS to Sony lenses until few years ago, well after sensor-based IS had already been established in the Minolta and Sony a-mount system.

There are no Minolta or Sony made a-mount lenses with OIS.

--
Cheers,
Henry

 

[kev777zero]

you are right; I only have E-mount/legacy lenses thus far, and it's been a nice experience really, especially on the normal-wide end (Zeiss 24 for good optics, SEL16 pancake for convenience, SEL50 for portraits/bokeh).

what I feel lacking is mainly the long end, where not only the advantage of size is gone, but you lose fast & accurate focus as well. So I was just thinking of adding a LA-EA2 & a telephoto lens, which would probably cost more than the SEL55210, but still much less than the SEL18200

What I want from getting the LA-EA2 are more (& cheaper) options of lenses, better AF for action, AND being able to focus on what I intend on focusing (w/ CDAF NEX always manage to find a higher contrasting object in the background than the subject itself!); Hopefully these are good enough reasons for getting the LA-EA2?

Main issue for me though is that I am not familiar with DSLR/SLT lenses. I plan on getting a telephoto zoom & a fast prime. the Sony alpha lenses are rather pricey and doesn't seem to offer OSS, and I heard Sigma lenses don't offer stabilization anymore for Sony either.

The Tamron 18-270 seems like a viable option should the optics be at least okay on the tele end. Otherwise a 70-300 or even the 70-200 2.8 if I manage to save up. As for primes I'm thinking of the Sigma 30mm 1.4, and was wondering how it'll compare in use to the E-mount Zeiss? I would like to know if there are any good options from Konica-Minolta as well, or if there are any other suggestions

I may wait until the 5R/6 comes out as well to see if the on sensor PDAF can cure the current focusing issues, but if not I will be getting the LA-EA2 for the NEX-7 (or maybe it'll work even better w/ the 5R/6?)

My thought on this matter is that the LAEA2 is for someone who has a NEX for compact size, but maybe already has some existing A mount lenses to use and they want an easy transition to NEX.

Another thought is if you are unhappy with the NEX in terms of AF, etc, maybe you don't have the right camera and maybe an A77, A65, A67, A57, or similar SLT would be a better choice? This will give you in body shake reduction.

I.e. in my opinion the LAEA2 is an adapter for when you sometimes use A mount lenses but want good focus, etc, but if you are going to use it all the time it doesn't seem like the best route.

If I were to buy lenses for the LAEA2 I would probably go with something you can't get on E mount easily, or a lens that would take advantage of the faster AF speed, etc.

Eric
--
I never saw an ugly thing in my life: for let the form of an object
be what it may - light, shade, and perspective will always make it
beautiful. - John Constable (quote)

See my Blog at: http://www.erphotoreview.com/ (bi-weekly)
Flickr Photostream: http://www.flickr.com/photos/28177041@N03/ (updated daily)

--
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http://kev777zero.artistswanted.org/
http://www.wix.com/drkevinlyu/photography

 

[Leaping Carp]

that's exactly what I did. So far happy with it.

 

[blue_skies]

when I first got the LA-EA2, there was no SEL50, SEL35, nor SEL24 yet - they have all come since (and yes, I am getting tthem all too).

I found the LA-EA2 + A35/1.8, A50/1.8 and A85/2.8 to be a very nice setup for relatively little money.

Now that the SEL lenses are there, these focal lengths do not add anything - the A and E lenses are very comparable in IQ.

The LA-EA2 still does deliver the fast auto-focus, proper focus on foreground, rather than on background, and sure-fire shutter press (no half-press, reframe or DMF methods needed).

On a recent outing, I took the SEL lenses, but wished I had taken the LA-EA2 adapter instead, given the results that I got (a lot of night time shots missed subject focus completely).

As to tele - I prefer the SEL18200 over the A75300, mostly because it is both wide and tele. 300mm is closer than 200mm, but on the Nex-7 you can crop under most circumstances.

I do have 100/f2.8 and 135/f.28 SLR legacy lenses which render with high contrast and a lot less motion blur, especially when light gets low. I would be interested in a fast f/2.8 mid range tele, and perhaps an f/4 longer range tele.

Wide angle - the LA-EA2 brings nothing. All lens options are bulky and pricey, and I am using the E16 with UC1 and VC1 adapters. Will look at the E1018, but am not eager to get one yet (I looked at the A1118 earlier and decided against it).

If you have used a dSLR, the LA-EA2 brings the experience back (A55 level).
If you haven't, you'd be impressed how well the LA-EA2 adapter works.

If you have no A lenses, no LA-EA2, I would consider the Nex-6 with the new 1650 kit lens and E35 first, before picking up the LA-EA2 with lenses.

I do expect however that the LA-EA2 will outperform the Nex-6 in a number of scenario, where PDAF will remain a prefered solution.

you are right; I only have E-mount/legacy lenses thus far, and it's been a nice experience really, especially on the normal-wide end (Zeiss 24 for good optics, SEL16 pancake for convenience, SEL50 for portraits/bokeh).

what I feel lacking is mainly the long end, where not only the advantage of size is gone, but you lose fast & accurate focus as well. So I was just thinking of adding a LA-EA2 & a telephoto lens, which would probably cost more than the SEL55210, but still much less than the SEL18200

What I want from getting the LA-EA2 are more (& cheaper) options of lenses, better AF for action, AND being able to focus on what I intend on focusing (w/ CDAF NEX always manage to find a higher contrasting object in the background than the subject itself!); Hopefully these are good enough reasons for getting the LA-EA2?

Main issue for me though is that I am not familiar with DSLR/SLT lenses. I plan on getting a telephoto zoom & a fast prime. the Sony alpha lenses are rather pricey and doesn't seem to offer OSS, and I heard Sigma lenses don't offer stabilization anymore for Sony either.

The Tamron 18-270 seems like a viable option should the optics be at least okay on the tele end. Otherwise a 70-300 or even the 70-200 2.8 if I manage to save up. As for primes I'm thinking of the Sigma 30mm 1.4, and was wondering how it'll compare in use to the E-mount Zeiss? I would like to know if there are any good options from Konica-Minolta as well, or if there are any other suggestions

I may wait until the 5R/6 comes out as well to see if the on sensor PDAF can cure the current focusing issues, but if not I will be getting the LA-EA2 for the NEX-7 (or maybe it'll work even better w/ the 5R/6?)

My thought on this matter is that the LAEA2 is for someone who has a NEX for compact size, but maybe already has some existing A mount lenses to use and they want an easy transition to NEX.

Another thought is if you are unhappy with the NEX in terms of AF, etc, maybe you don't have the right camera and maybe an A77, A65, A67, A57, or similar SLT would be a better choice? This will give you in body shake reduction.

I.e. in my opinion the LAEA2 is an adapter for when you sometimes use A mount lenses but want good focus, etc, but if you are going to use it all the time it doesn't seem like the best route.

If I were to buy lenses for the LAEA2 I would probably go with something you can't get on E mount easily, or a lens that would take advantage of the faster AF speed, etc.

Eric
--
I never saw an ugly thing in my life: for let the form of an object
be what it may - light, shade, and perspective will always make it
beautiful. - John Constable (quote)

See my Blog at: http://www.erphotoreview.com/ (bi-weekly)
Flickr Photostream: http://www.flickr.com/photos/28177041@N03/ (updated daily)

--
http://www.flickr.com/photos/kevinwlyu/
http://kev777zero.artistswanted.org/
http://www.wix.com/drkevinlyu/photography

--
Cheers,
Henry

 

[kev777zero]

still choosing between lenses (so many more options with a-mount!). What surprises me is how cheap I can get DSLR superzooms for. the 70-300 offerings are cheap too, although the weight bothers me a little (since these lenses were designed for full frame).

some of the fast zoom offers seem quite appealing as well. unfortunately the fast telephoto primes are quite pricey

that's exactly what I did. So far happy with it.

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[Klipsen]

I think we are saying the same, but your response is not much clearer than I guess my earlier comments - see my remarks below

Yes, the Alpha Mount was called A mount by Minolta, and Minolta had already developed OIS technology in the lenses.

Never. Ever.

Per your other comment below, OIS and IBIS didn't work together, and Sony favored the IBIS for the Axx cameras, hence newer Sony lenses dropped OIS.

No, Sony bought Minolta's concept with in-body stabilisation. Pentax and Olympus later "copied" that solution.

They also motivated third parties to do the same.

No, other manufacturers' patent rights demotivated Sigma from making any lenses with OS - plus in-lens and in-body stabilisations cancel out one another (take it from someone who knows the importance of not leaving both systems on at the same time).

This is confusing, because Sigma does put OIS in the non-alpha mount version of most of their lenses, they just dropped it for the alpha mount.

For some of their mainstream lenses, they rely on Sony's own stabilisation. Nothing wrong with that. Their expert lenses, however, do have OS in Sony versions - to the extent that such a version exists.

Maybe not motivated by Sony, but your comment that OIS and IBIS not working together is another great motivator.

Both systems can be deactivated or activated independently of one another.

Only 'older' lenses still have the OIS in the alpha mount.

Only 'newer' Sigma lenses have OS, although not all do. Then again, not all their designs exist for other brands than Sigma, Canon and Nikon.

Semantics - the OIS drop happened about 18 months ago or so. So lenses before that, but well after Sony had taken over the Minolta brand. Yes, 'newer' in the Minolta context, but 'older' in that they are no longer being planned/engineered.

Their 70-200 mm is their most recent expert lens that exist for A-mount, and it has OS.

 

[D Williams]

Besides the 'super' zooms mentioned a good A-mount macro lens or two are excellent compliments to the NEX. Most are relatively fast (f2.8) and almost all provide bitingly sharp images. They basically come in short, medium, and long and there are plenty of used copies of the short and medium variety. Examples of short macros are the Minolta/Sony 50mm and the Tamron 60mm (f2.0). Excellent for flowers and things that don't run away. Good medium macros are the Tamron 90, Minolota 100, and the Sigma 105. When you get to the longer 'real' macros you are into the Sigma 150 and Sigma 180. They are spendy but good, you can get them with OS, and they will probably never be matched in native E-mount.

Another good, available lens for the NEX/LA-E2 is the Minolta 135mm F2.8. It gives an equivalent 200mm reach, has decent to excellent IQ, and is reasonably small and light. Fast enough and short enough to give reach without stabilization under many conditions.

A sigma 10-20 is also a reasonable possibility if you don't want to go $800+ for the new E-mount short zoom.

Finally, if the 50mm f1.8 E-mount isn't focusing fast enough for you to catch the cat or the kids consider a Minolta 50mm f1.4 or f1.8

 

[kev777zero]

thanks for the advice! I am looking for options that are not just superzooms or consumer telephoto primes.

this may be a weird choice, but I'm interested in starting off with this old sigma zoom: 28-105mm F2.8-4 ( http://slrgear.com/reviews/showproduct.php/product/209/cat/31 ). very cheap, quite small/lightweight (although covers full-frame), and it'll give me a fast & broad focal length range to work with too. just don't know how IQ is!

Besides the 'super' zooms mentioned a good A-mount macro lens or two are excellent compliments to the NEX. Most are relatively fast (f2.8) and almost all provide bitingly sharp images. They basically come in short, medium, and long and there are plenty of used copies of the short and medium variety. Examples of short macros are the Minolta/Sony 50mm and the Tamron 60mm (f2.0). Excellent for flowers and things that don't run away. Good medium macros are the Tamron 90, Minolota 100, and the Sigma 105. When you get to the longer 'real' macros you are into the Sigma 150 and Sigma 180. They are spendy but good, you can get them with OS, and they will probably never be matched in native E-mount.

Another good, available lens for the NEX/LA-E2 is the Minolta 135mm F2.8. It gives an equivalent 200mm reach, has decent to excellent IQ, and is reasonably small and light. Fast enough and short enough to give reach without stabilization under many conditions.

A sigma 10-20 is also a reasonable possibility if you don't want to go $800+ for the new E-mount short zoom.

Finally, if the 50mm f1.8 E-mount isn't focusing fast enough for you to catch the cat or the kids consider a Minolta 50mm f1.4 or f1.8

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