50mm lens f1.4 vs. f1.7

[Eyesthruthelens]

Can you see the differences at f1.7.. :think:

more photos here: http://www.flickr.com/photos/eyesthruthelens/sets/72157594446337229/detail/

 

[kcuf2]

it seems there is a teeny weeny bit of difference...but a very very subtle one that is.. the bokeh for 1.4 is just a bit a bit a bit more blur..

 

[mlowjl]

Do my eyes deceive me or do the 1.4 shots seem sharper? Brighter too, by just a little.

 

[Galdor]

it seems there is a teeny weeny bit of difference...but a very very subtle one that is.. the bokeh for 1.4 is just a bit a bit a bit more blur..

Do my eyes deceive me or do the 1.4 shots seem sharper? Brighter too, by just a little.

Agree.

 

[yokechye]

ya... 1.4 looks sharper

 

[kcuf2]

mmm..pls dun kill me for being a bit greedy

issit possible for u to shoot some bright coloured objects? i m pretty interested in knowing the ability of these 2 lens to handle colour fringing at 1.4 and 1.7

 

[Johnston]

Agreed. 1.4 looks sharper and the colour is nicer.

 

[forbytes]

some issues needs to be addressed, such as filters - are they the same? filter does have an impact on colour significantly followed by sharpness. IOr shoot with no filters which is the best case. Is the colour balance the same?

Some lens are generally more warm then others (not going to state the brand) but can be compensated with fine tweaking of colour balance.

 

[AncientMariner]

I think what most people notice about the f1.4 lens being sharper or brighter is simply better contrast.

 

[tankm]

Thanks for the comparison. Interesting. The 1.4 does look slightly sharper in the first crop photo but not on the other two.

 

[fastshot]

Maybe it is the low res of the pictures here, but I don't see any practical difference between the two. Subtle differences in color, contrast, sharpness can be easily compensated by post processing especially when shooting raw. What's harder to compensate in post processing (in my limited experience) is bokeh and color fringing.

I think there is some truth in saying people who has great post processing skills can make good pictures with very ordinary lenses. But I do enjoy using those nice expensive lenses too much to settle for the ordinary lenses - I guess the "shiokness" factor is part of enjoying photography.

 

[Eyesthruthelens]

Actually I can't really see any big differences btw these 2 copy of lenses..
Either I got a good f1.7 or a lousy f1.4
Actually I'm expecting to see some differences in the Bokeh but seem like they are the same..

Maybe it is the low res of the pictures here, but I don't see any practical difference between the two. Subtle differences in color, contrast, sharpness can be easily compensated by post processing especially when shooting raw. What's harder to compensate in post processing (in my limited experience) is bokeh and color fringing.

I think there is some truth in saying people who has great post processing skills can make good pictures with very ordinary lenses. But I do enjoy using those nice expensive lenses too much to settle for the ordinary lenses - I guess the "shiokness" factor is part of enjoying photography.

 

[johngobs]

I'm no expert on this one, but i think you will see the dirrerence in situation when light is limited, since the 1.4 is faster than 1.7

Just my guess...

 

[forbytes]

yes, the bokeh for 1.4 is indeed better for 1.7. but remember people normally shooting with zooms (whatever range they are using) and normally have "slightly" inferior bokeh unless you are spending hugh $$$ on high quality lens. Hence for the $$$/quality bokeh ratio, i feel f1.7 could easily win many lens out there. this applies to other makes as well.

Sorry for the unfair comparision. please don't :flame: me

 

[forbytes]

I'm no expert on this one, but i think you will see the dirrerence in situation when light is limited, since the 1.4 is faster than 1.7

Just my guess...

agree on this. when lens are attached to bodies, the aperture are open wide. hence, 1.4 will be bigger than 1.7, more light falls onto focus sensor. result = easy to focus. when you shoot, aperture close to the value set in the camera, open shutter and take picture. in such "dark" cases, you do have an advantage in focusing.

 

[Lawyon]

To me, 1.4 better...differences viewed could be due to monitor.

 

[tankm]

Right on. Even on the same monitor with different input (digital or analog) shows a difference in terms of color and sharpness.

To me, 1.4 better...differences viewed could be due to monitor.

 

[TME]

No discernable difference except for some colour difference and exposure difference which might simply be due to inherent construction design differences from a f/1.4 and f/1.7 as well as the number and type of aperture blades... I agree with forbytes that the shots should be done without filter... and the subjects have little fine detail that can differentiate if the much more expensive f/1.4 can outresolve the f/1.7... which might be moot anyway since at only 6MP, I wonder if the lens is already outresolving the sensor... and also someone mentioned about f/1.4 being brighter... for AF perhaps it makes a lot of difference only under very low light... but for most practical purposes, who shoots @ f/1.4? The DOF is so narrow that OOF is a real problem unless u're on a tripod with a static object that occupies a relatively narrow front to rear perspective or u've got a particular look u want to create to draw attention to the focussed area as opposed to the OOF areas in which case the bokeh would be extremely important... so for me, the f/1.7 wins hands down for sharpness, bokeh, colour and clarity... no need to spend more on the f/1.4... I hardly use it (the f/1.7) but I feel good that I have a very fast lens when I need it...

 

[TuTu_CaR]

aibt off topic,
normally when you guys shoot, do you all put on filters? Will the filter degrade any quality

 

[isomers007]

the 1.4 has better contrast and sharper too. can see the diff on my monitor although on first look, cant see much anyway. there's always post-processing. so who cares. just get the f1.7 for a cheaper alternative. afterall whether you get that picture is what counts.