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ZD 14-42 (KIT) vs. CZJ Flektogon 4/20 (on Olympus E510)
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PostPosted: Mon Dec 28, 2009 10:14 pm    Post subject: ZD 14-42 (KIT) vs. CZJ Flektogon 4/20 (on Olympus E510) Reply with quote

I know it's unfair comparison, but I can't help it Very Happy
As you can see, it is not so serious test. Have fun.

Night shot from my balcony (T=4 sec, f/4, ISO 100)

I will try to do blind test here so, let's call it shot 'A' and 'B'. I will disclose what is A and B later (you can see it in the metadata though) Laughing

A



B




I will post other samples tomorrow when it is sunny.


PostPosted: Mon Dec 28, 2009 10:25 pm    Post subject: Reply with quote

what a difference...
the Oly kit must be a good lens Wink


PostPosted: Mon Dec 28, 2009 10:33 pm    Post subject: Reply with quote

A large difference.


PostPosted: Mon Dec 28, 2009 10:38 pm    Post subject: Reply with quote

It surprise me also - but it is in f/4 and slow speed.
Wait until sunrise I will shot f/8 and we can see the real difference Very Happy


PostPosted: Mon Dec 28, 2009 11:04 pm    Post subject: Reply with quote

Till I see, the A has more flare. I can't see any other difference.

F/4? The zeiss is wide open. I think that it isn't the best way to use this lens in the night and with strong lights.

Rino.


PostPosted: Tue Dec 29, 2009 12:07 am    Post subject: Reply with quote

estudleon wrote:
Till I see, the A has more flare. I can't see any other difference.

F/4? The zeiss is wide open. I think that it isn't the best way to use this lens in the night and with strong lights.

Rino.


That's an interesting observation - but why shouldn't we use a wide angle lens at night at full aperture? Confused


PostPosted: Tue Dec 29, 2009 1:10 am    Post subject: Reply with quote

estudleon wrote:
Till I see, the A has more flare. I can't see any other difference.

F/4? The zeiss is wide open. I think that it isn't the best way to use this lens in the night and with strong lights.

Rino.


It is true Rino, the Flek lost in the coating but is sharper


PostPosted: Tue Dec 29, 2009 1:24 am    Post subject: Reply with quote

francotirador wrote:
estudleon wrote:
Till I see, the A has more flare. I can't see any other difference.

F/4? The zeiss is wide open. I think that it isn't the best way to use this lens in the night and with strong lights.

Rino.


It is true Rino, the Flek lost in the coating but is sharper


There must be something wrong with my monitor, or my spectacles, because the 2nd picture, the one taken with the kit lens, looks distinctly sharper than the first.


PostPosted: Tue Dec 29, 2009 2:13 am    Post subject: Reply with quote

sichko wrote:
francotirador wrote:
estudleon wrote:
Till I see, the A has more flare. I can't see any other difference.

F/4? The zeiss is wide open. I think that it isn't the best way to use this lens in the night and with strong lights.

Rino.


It is true Rino, the Flek lost in the coating but is sharper


There must be something wrong with my monitor, or my spectacles, because the 2nd picture, the one taken with the kit lens, looks distinctly sharper than the first.

in the area highlights, the Zuiko is better (coating) but in areas of medium and low light I think it's better Flek.


PostPosted: Tue Dec 29, 2009 10:11 am    Post subject: Reply with quote

I took the shot at the same spot this morning:

All pictures taken with ISO 200, f/11, T=1/40 sec
2 versions: without and with 'auto-contrast' in Photoshop.

Without auto-contrast

A


B


PostPosted: Tue Dec 29, 2009 10:13 am    Post subject: Reply with quote

With auto contrast

A



B


PostPosted: Tue Dec 29, 2009 10:15 am    Post subject: Reply with quote

What do you think?
By the way both shots taken with sunny day WB - that explains the blue cast.


PostPosted: Tue Dec 29, 2009 10:43 am    Post subject: Reply with quote

Could you please provide some 100% crops from the corners and centre of these photos?


PostPosted: Tue Dec 29, 2009 11:03 am    Post subject: Reply with quote

sichko wrote:

There must be something wrong with my monitor, or my spectacles, because the 2nd picture, the one taken with the kit lens, looks distinctly sharper than the first.


Why must there be something wrong?


PostPosted: Tue Dec 29, 2009 1:45 pm    Post subject: Reply with quote

The 1st night shot just looks out of focus to me. The day shots look about equal in terms of IQ, but have different qualities.


PostPosted: Tue Dec 29, 2009 3:56 pm    Post subject: Reply with quote

Minimum difference favoring Flek, but very small. In areas of midtone. Flektogon is possible that the MC has better performance.
Zuiko is a great lens. I'm looking for the 24mm.
Greetings


PostPosted: Tue Dec 29, 2009 4:31 pm    Post subject: Reply with quote

scsambrook wrote:
estudleon wrote:
Till I see, the A has more flare. I can't see any other difference.

F/4? The zeiss is wide open. I think that it isn't the best way to use this lens in the night and with strong lights.

Rino.


That's an interesting observation - but why shouldn't we use a wide angle lens at night at full aperture? Confused


Why ?

1- Full aperture doesn't the best about sharpness in wide angle lenses (and in a lot more too). Benefits the flat of dark zones 'cos the lost of sharpness and the OOF.

2- At wide open, there are some problems to focus the image. The most usefull is the use of the prefocus system.

3- In the CZJ 4/40 in particular, the single coat do more complicated the rendering in the high lights into de pic.

Regards, Rino.


PostPosted: Tue Dec 29, 2009 4:44 pm    Post subject: Reply with quote

Shrek wrote:
Could you please provide some 100% crops from the corners and centre of these photos?


All the comparisions are usefull, in differents grades. And this is one usefull too.

But the images with the CZJ 4/20, if you wanto to take the best possibles with it, they must be takken with the F/ 16 aperture. Between the F/16 and the F/11 or the F/22 are a lot of differences in center and corners IQ.

This was a constant in the three CZJ 4/20 that I had (now only one).

Rino.


PostPosted: Tue Dec 29, 2009 4:58 pm    Post subject: Reply with quote

estudleon wrote:
scsambrook wrote:
estudleon wrote:
Till I see, the A has more flare. I can't see any other difference.

F/4? The zeiss is wide open. I think that it isn't the best way to use this lens in the night and with strong lights.

Rino.


That's an interesting observation - but why shouldn't we use a wide angle lens at night at full aperture? Confused


Why ?

1- Full aperture doesn't the best about sharpness in wide angle lenses (and in a lot more too). Benefits the flat of dark zones 'cos the lost of sharpness and the OOF.

2- At wide open, there are some problems to focus the image. The most usefull is the use of the prefocus system.

3- In the CZJ 4/40 in particular, the single coat do more complicated the rendering in the high lights into de pic.

Regards, Rino.


Thanks Rino, but how does that affect the comparison? Apart from the zoom lens being multi-coated and being stopped down by 1/3 stop everything else seems like a level playing field to me.Interesting to see something being unexpectedly "better" than than the 20mm Flek, don't you think? Smile Or maybe that sample has a problem ...


PostPosted: Tue Dec 29, 2009 7:43 pm    Post subject: Reply with quote

Oh Stephen, I didn't understand before. Excuse me.

The best comparision is between the lens itself. Which is the best pics that we can take with it and what is the one that we had taken. I hope to be clear but my english......

The comparision to know What to avoid and what to look for.

The comparision between the zuiko and the CZJ perhaps don't let us to know about what is the better but let us to know where use the CZJ, effects of the single coat in it, how is the best way to use it in the night and under the sun too. What yes and what not to express to the maximun the best characteristics of the lens.

Use and note, use and note, use and note, use and note. . . . . . .

Regards, Rino.


PostPosted: Tue Dec 29, 2009 10:46 pm    Post subject: Reply with quote

Hi Rino!

Your English is fine - I understand exactly what you're saying and I agree with you entirely. All lenses have their strengths and many have some weaknesses - and some have many weaknesses. Yes, use and note ... an excellent philosophy.


PostPosted: Tue Dec 29, 2009 11:16 pm    Post subject: Reply with quote

Interesting discussion going on ... Very Happy
As you already notice: A=Flektogon; B=Zuiko Digital.

What I think is unfair in this comparison is the different format used by the Flek. They have to cover much-much bigger area than the Zuiko (2x diagonal = 4 x the area), so it means the comparison is a bit like using MF format lenses on 135. The more fair comparison will be on Full Frame.

In this regard I can't disagree with Wrotniak and Olympus about using 135 lenses on 4/3 format can be not so wonderful (except for some exceptional legendary lenses or to get access to much cheaper alternatives than pro-lines Zuiko Digital lenses).

Or using this Flektogon with tilt/shift adapter on 4/3 may be an interesting project - may be for creating a panorama? Very Happy


PostPosted: Sun Jan 03, 2010 7:00 am    Post subject: Another sample from Flektogon 4/20 Reply with quote