Simple test of two 50mm lenses - help me decide

no-X · Posted: Fri Sep 24, 2010 10:00 am Post subject:

As for the cast on the right side - the shots weren't taken during the same minute, there was a few minute delay, so angle of the sun changed a bit - maybe there was a small cloud which made the left side darker, anyway, it isn't a typical property of lens A to make right half of the image darker or greener Very Happy

I wouldn't take it into account, this is likely my fault Embarassed

The poll is active for 7 days, so I'll reveal it on Wednesday.

poilu · Expire: 2019-08-29

metallaro1980 · Posted: Fri Sep 24, 2010 10:14 am Post subject:

no-X · Posted: Fri Sep 24, 2010 10:38 am Post subject:

poilu, I know what you mean, but color vignetting problem is related to the IR filter (you can remember, that Leica had a bit similar problem a few years ago) and regarding Sigma DSLR cameras this issue appears only when early non-telecentric wide-angle lenses of retrofocal type are used stopped down to f/8 or more (e.g. Primagon 35/4.5).

These are two 50mm standard lenses at f/4.

poilu · Expire: 2019-08-29

no-X · Posted: Fri Sep 24, 2010 11:04 am Post subject:

http://forum.mflenses.com/viewtopic,p,142950.html#142950 Wink

Olivier · Expire: 2015-08-06

6198 too.

bobcominitaly · Joined: 22 May 2009 Posts: 71 Location: Terontola (I)

I opted for 6198, because imo its color rendition is a bit more vivid and contrastier (view colors of stucco and sunny spots beneath balconies). However, a little bit of overcast when 6160 was shot might also have caused the difference...

no-X · Posted: Tue Sep 28, 2010 10:06 pm Post subject:

Lens A wins

Lens A (6160) is Asahi S-M-C Macro Takumar 50/4
Lens B (6198) is Asahi S-M-C Takumar 50/1.4 @ f4

Arkku · Joined: 28 Feb 2007 Posts: 1416 Location: Helsinki, Finland

estudleon · Joined: 15 May 2008 Posts: 3754 Location: Argentina

Very close, yes. Both nice images, of course.

But what must I understand? That the macro lens has a long distance rendering almost equal to the great SMC 1,4? Perhaps. Yes, it seems to be so. And that the two are nice? Yes.

I should vote for the B too. The IQ of the 1,4 is known for me, I use this lens like my normal ones.
But when I saw the greenish tonality I thought in pancolar-planar.

Thanks No-x.

visualopsins · Expire: 2025-04-11

I almost asked "Takumars?" Thank you no-X! The comparison of these very same lenses @F/4 has been on my list of things to do for a long time! I have wondered if one was sharper. Imho we have seen here that the macro has more contrast and flat-field sharpness, and that the normal is as sharp as the macro, has smoother changes toward out-of-focus regions where macro out-of-focus changes are more abrupt due to more contrast.