25mm 1.4 or 20mm 1.7 II

For the 25:
* much faster AF, easier to aquire focus on children
* eq. 50 fov more flattering for portraits close up
* overall much better IQ (some say otherwise, I own both, and imo it's no contest), especially wide open where subjects really pop out

for the 20:
* cheaper
* more compact in combination with your E-PM2

 

I would go for the twenty and put what you save towards a 45 later

the 25 will be better in low light... but not by much in real terms

K

 

for kids, PL25 - no doubt. I found P20 AF not reliable in low light and it's nearly unusable for moving subjects especially w/touch shutter.
Also, PL25 does not have the unpleasing perspective distortion when photographing close ups of people. It is more tight but I think it helps photos to stand out more due to closer framing. You also gain significantly more control over DoF w/PL25.

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For kids.... dont even bother with the P20. The AF advantages alone make the PL25mm the right choice in your situation. You might consider the Oly 25mm f1.8 as well as a cheaper option to the PL25mm which has equally good AF if you want to save a few bucks (its smaller in size too but is a little slower in aperture).

 

Sebastian, does it have to be a choice between these two lenses only? Here's another vote for your consideration of the Olympus 25mm f/1.8. It's a bit less expensive than the Panasonic 25 and is quite good. Here's one comparison between the Oly and Panny 25s:

http://robinwong.blogspot.com/2014/02/olympus-mzuiko-25mm-f18-lens-review.html

 

The Olympus 25 is a great lens, and Robin Wong is a great photographer, but he is also a paid Olympus employee. His reviews are marketing (but thats not a knock on the lens, just a heads up).

 

I traded in my 20mm for a 25mm Olympus. I shot with the 20mm for quite a long time but it feels closer to a 35mm equiv FOV to me. No reason for the trade except that I wanted something closer to a 50mm equiv FOV. A decision made based solely on personal preference and past experience.

The fact that you said

tells me you should get the 20mm for a while and see how it works for you. You can't go wrong with any of the selection... all will do fine.

 

I have owned both many times...Remember auto focus wont mean didily squat until your baby can walk...so slow autofocus(20mm) a non issue...yes the 25mm will give a slight more dreamy OOF look ..but in my experiance always a bleached out bluish tinge to all skin tones...save your money buy the 20mm!! your going to need lots of cash with a bambino on the way!

 

I sold my 20mm MK1 to buy the 25mm 1.4 for my 1 year old son - it renders nice shots but at 1.4 you've got to make sure the focus is spot on for close portraits so end up mostly using it at f2/2.8 anyway. There's not a whole lot of difference to be honest, sure the 25mm is faster and quieter but never had a problem with the 20mm and I do miss it's portability. They are both really sharp.

I'd probably go for the Olympus 25mm now though, as it's smaller, quieter and cheaper while being just as sharp. The Olympus 45mm has given me the best shots of my son, though it's not as flexible focal length.

 

AGREED! the 45mm is superb but again very limiting FOV indoors....outdoors with large aperature very difficult to nail focus..more so than 20mm...with my hyperactive child anyway! and my child has an automatic reaction....soon as i point camera her way she turns away or pulls a sulky face...guess i play with the camera more than i realise!!!

 

I just went through this...ultimately, I went with the 20 1.7. Here's why:

- Significantly smaller/lighter...lets me take advantage of the whole reason I got into M4/3 in the first place.
- Pretty much the same light gathering capabilities
- Great bokeh under the right circumstances...ridiculously sharp even wide open, great contrast, etc.
- I like the FOV better
- There are plenty of lenses that do what the 25 1.4 does (sharp, fast, good bokeh: 25 1.8, 45 1.8, 75 1.8, 42.5 1.2, the Voigtlanders, etc; two of which - the O45 and O75 - I already have)...only ONE lens is a blazing fast pancake. It warms my heart knowing that I own what is likely the fastest AF pancake ever made.

These reasons may not all be relevant to your case, but they sure helped me!

 

Both lenses are optically good, but since you're shooting with the E-PM2, I might go with the 20mm just because of the smaller size. The 25mm is bulky on the Pen Mini bodies.

 

You're welcome, glad I could be of help!  

Let me know what you end up doing and how you like it! My 20 should be in my hands sometime this week!  

 

I'm going to go and say you should "really" buy the 45 f1.8 if your planning to photograph your first kid. I just had my second daughter. And in the beginning I used the 20mm a lot. Until I realized how much barrel distortion there is. I had the 25mm and even tho it is farther, if you get close enough you will still get this distortion. The closer the image sensor is to the face, the more distortion there will be. When they are babies you will be taking a lot of close up face shots and the 45mm is just right for that. Sure, with the 20/25 you could step back and take the photo at a farther point so there is no barrel distortion, then crop it in post process to get a portrait. But the images you get from the 45mm straight will be so much better, especially the amount of out of focus background you will get and subject seperation.

When they get older, they will not like having the camera pointed at them, and the 45mm again will become useful cause you can be farther away from them when taking the photo. With the 20/25 you'd have to be close up on them. It depends on the type of photos you take too, and every kid is different too. I eventually sold the 25 and kept the 20. I feel the 20 is still fast enough kids photos. But obviously the 25 would be better due to the faster af. But I chose size as the primary reason for keeping the 20.

 

First off, congratulations to you. Get ready for a crazy ride! I have a 1.5 year old kiddo.

I didn't get my GX7 until he was around 10 months old. I borrowed a friend's 20mm right after I got it when I was trying to decide which lenses to start with. I really liked it, save for the slower focus speed.

I now own an Oly 17 1.8, 45 1.8, a Panny 45-140, and the kit Panny 14-42. As D MATIC mentioned above, the 45mm is a great option. Yes, it can be a pain to use, especially inside (hey, kid over by the bookcase, look over here towards me by the refrigerator in the next room!), but my favorite kid pictures have been from it, hands down.

My zooms are too slow to be effective inside, which is where I take many kid shots. For me, the 17mm is just too wide for single subject indoor shots. My next lens will probably be the Oly 25mm, or possibly the PL25mm.

Knowing what I know now, and how I shoot, if I were to do it all over again, I would probably start with a 25mm. A nice mix of not too wide, not too long, fast enough, and fast focus speed. I encourage you to try the lenses out, if possible. The decision might make itself once you see them in action.

Good luck with the baby!