Sony 50/1.4 Review on DPreview.

Discussion of lenses, brand or independent, uses and merits
Forum rules
No more than three images or three external links allowed in any post or reply. Please trim quotations and do not include images in quotes unless essential.
Yagil Henkin
Heirophant
Posts: 86
Joined: Tue Oct 07, 2008 8:29 pm

Sony 50/1.4 Review on DPreview.

Unread post by Yagil Henkin »

Couple of suprising conclusions:
1. On APS, it's leading the 50mm bunch in term of sharpness - even better than the Sigma 50.
2. On full-frame it's the other way around - the corner sharpness makes the Sigma much better performer.
3. Most surprisingly - the Sony 50/1.4 had higher resolution and CA when compared to the Minolta 50/1.4. They suggest that ADI and new coating may make a difference - but they tested only one copy each, so it may be just a sample variation.

http://www.dpreview.com/lensreviews/sony_50_1p4_m15/" onclick="window.open(this.href);return false;
User avatar
InTheSky
Viceroy
Posts: 873
Joined: Wed Oct 08, 2008 4:23 am
Location: Montreal, Quebec, Canada
Contact:

Re: Sony 50/1.4 Review on DPreview.

Unread post by InTheSky »

I have took a lot of shot since i have the A900 with the 50mm F/1.4 and i can say that the lens is performing very good even at F/1.4. Yes it is not as sharp as when you stop down to F/2.8 and more ... but in good focus, you are not seeing to much lost of sharpness in the middle.

But this is true, there is a lot of 50mm 1.4 with focusing problem. Actually i had 3 lens on my hand last week, and only one was really good at focusing without calibration on the A900. Even the best one, i have just tweaked a little -2 correction to it (under tungsten , this is where I'm using it a lot).

50mm are 50mm :-) when you but it on the camera , you feel that this is made to be the prime of all usage on your full frame camera. When i have put it on my A900 the first day, i was thinking: Do i have put my 28mm on it ? (remembering the feeling 28mm give on A700). 50mm on A700 feel more like the 85mm 1.4, but on Full frame this is another lens. (i know who are shooting 35mm film in the past will think what he is talking about :-) ... , but I'm reffering to people like me who has started to shoot SLR first on the Minolta 7D or 5D :-) ).

For the size, the weight, and the good design of the hood (to be store in reverse), i cannot see any of other brand equal to what Sony/Minolta can offer.

Regards,

Frank
Frank
A7 (R, S & R II) + NEX 3N ( and few lenses )
User avatar
[SiC]
Imperial Ambassador
Posts: 493
Joined: Fri Sep 05, 2008 7:16 am
Location: Hammarö, Sweden
Contact:

Re: Sony 50/1.4 Review on DPreview.

Unread post by [SiC] »

Seems great, but I think I'll stick to my cheapo 1.7 until that damn lottery starts working :wink:
Sony A700, A580, Nex-5t, KM D7D & VC-7D, M Dynax 500si
KM 17-35 F2.8-4 D, M 50 F1.7 RS, M 135 F2.8, M 28-100 F3.5-5.6 D, M 100-200 F4.5, T 70-300 F4-5.6 Di USD, S 18-55 F3.5-5.6 SAM, S 18-70 F3.5-5.6
Sony hvl-f42s, Minolta 3600 HS D
Sony Z1C & Z2
User avatar
Dr. Harout
Tower of Babel
Posts: 5788
Joined: Wed May 30, 2007 7:38 pm
Location: Yerevan, Armenia
Contact:

Re: Sony 50/1.4 Review on DPreview.

Unread post by Dr. Harout »

Frank, if I ever change to FF it will be solely to keep my mind in a relaxing state, and not to calculate which focal length is which. I still didn't get used to the APS calculating system. And each time I mount a lens on A700 I calculate the respective focal length on 35 mm (or FF).
A99 + a7rII + Sony, Zeiss, Minolta, Rokinon and M42 lenses

Flickr
User avatar
bakubo
Tower of Babel
Posts: 5774
Joined: Tue Nov 06, 2007 7:55 am
Location: Japan
Contact:

Re: Sony 50/1.4 Review on DPreview.

Unread post by bakubo »

Dr. Harout wrote:Frank, if I ever change to FF it will be solely to keep my mind in a relaxing state, and not to calculate which focal length is which. I still didn't get used to the APS calculating system. And each time I mount a lens on A700 I calculate the respective focal length on 35 mm (or FF).
Hey Doc, it keeps the mind agile! Think of it as mental exercise. :)
User avatar
Dr. Harout
Tower of Babel
Posts: 5788
Joined: Wed May 30, 2007 7:38 pm
Location: Yerevan, Armenia
Contact:

Re: Sony 50/1.4 Review on DPreview.

Unread post by Dr. Harout »

bakubo wrote:
Dr. Harout wrote:Frank, if I ever change to FF it will be solely to keep my mind in a relaxing state, and not to calculate which focal length is which. I still didn't get used to the APS calculating system. And each time I mount a lens on A700 I calculate the respective focal length on 35 mm (or FF).
Hey Doc, it keeps the mind agile! Think of it as mental exercise. :)
And that's one of the reasons I'm not upgrading :lol: :lol:
A99 + a7rII + Sony, Zeiss, Minolta, Rokinon and M42 lenses

Flickr
sparaxis
Initiate
Posts: 42
Joined: Fri Nov 07, 2008 10:30 pm
Location: Baltimore USA

Re: Sony 50/1.4 Review on DPreview.

Unread post by sparaxis »

I think it is safe to say that the Sony lens is reformulated compared to the Minolta lens. The A100 was introduced a few days after the European ban on lead in consumer products went into effect. Thus they would not have been able to get a waiver to continue selling a lens with leaded glass. This probably explains why a number of beloved lenses disappeared. Any lens designed after the late 1990's is probably lead free from the get-go, as the industry had plenty of warning that this was coming. Which probably is why an odd-ball lens like the STF surviced and other "obvious" choices did not.

There are "direct replacements" for many common lead glass types. And no replacements for some of the exotic glasses. The direct replacements usually match the leaded version with respect to the Index of refraction, but the dispersion usually differs slightly. So the trick would be to replace the lead-bearing elements with lead free glass, and then perhaps tweak the formula to restore the performance. The 35 f1.4 was a lens that was obviously reformulated as well. The Hybrid aspheric element was replaced by a glass molded one.

Two interesting facts about the lead-substitute glasses. They are usually lighter, and also harder than the glasses they replace. Schott glass has a lot of info on their web site.

Alan
Post Reply

Who is online

Users browsing this forum: No registered users and 2 guests