Images from Sigma 35mm f1.4 dg

[ricleo]

Hehe I think the increase in IQ wide open at F1.4 and cost savings was a good idea. Just perhaps not suited for focusing on fast moving kids and pets that I was trying to do today, but perfect for portraits of the wife and night scenes

lol, what a surprise. Ring USM is still top notch, Sigma's and Tamron's ultrasonic motors aren't exactly on the same level but close enough for many. Why did you sell it before trying out the new one? Don't believe every hype on the net, better try it out yourself.

 

[ageha]

Hehe I think the increase in IQ wide open at F1.4 and cost savings was a good idea. Just perhaps not suited for focusing on fast moving kids and pets that I was trying to do today, but perfect for portraits of the wife and night scenes

For portraits and still life even manual focus is fast enough.

 

[tomcat]

That's why it is not necessary to have USM AF

 

[ageha]

That's why it is not necessary to have USM AF

Not even HSM.

 

[tomcat]

HSM is good enough. What's more important is image quality. No point have lightspeed fast AF but lousy image quality.

 

[ageha]

HSM is good enough. What's more important is image quality. No point have lightspeed fast AF but lousy image quality.

Focus precision and IQ go hand in hand. The right mix is important.

 

[tomcat]

By image quality, I am referring to that which is due to optical quality - chromatic aberrations, softness when wide opened, geometric distortions, softness at the edges etc . Focus precision problems the kind that Sigma lenses are prone to I can live with because they are easily correctable by recalibration or focus micro-adjustment. The same can't be said for lenses with wanting optical quality since they cannot be corrected without selling them off and changing over to other better optical qualitied equivalent lenses.

 

[roDz]

This lens has "A" on it...so i will be happy with good IQ...its not meant for sports, so a reasonably fast AF will do for me...dont need lightning fast...

 

[tomcat]

Gong Xi Fa Cai from Cookie and the 35mm...

 

[cichlid]

Gong Xi Fa Cai from Cookie and the 35mm...

Hi, you focused on the orange or the cat?

 

[tomcat]

Hi, you focused on the orange or the cat?

I had focussed on the eyes of the cat in that pic. Both the orange and the cat were in focus because I had used an aperture setting of f/4.5. It is just that the cat has much more extremely fine details that even though they are finely captured by the camera, tends to blur out when the image is severely reduced in size for posting.

See the 100% crop of the cat's face in the above image for example:

 

[ageha]

I had focussed on the eyes of the cat in that pic. Both the orange and the cat were in focus because I had used an aperture setting of f/4.5. It is just that the cat has much more extremely fine details that even though they are finely captured by the camera, tends to blur out when the image is severely reduced in size for posting.

See the 100% crop of the cat's face in the above image for example:

The eyebrows and the orange look sharper than the nose.

 

[cichlid]

I had focussed on the eyes of the cat in that pic. Both the orange and the cat were in focus because I had used an aperture setting of f/4.5. It is just that the cat has much more extremely fine details that even though they are finely captured by the camera, tends to blur out when the image is severely reduced in size for posting.

See the 100% crop of the cat's face in the above image for example:

Thanks, learnt something today

 

[tomcat]

The eyebrows and the orange look sharper than the nose.

That's a phenomenon I observed when photographing cats' faces head-on. Even when using small apertures, the bridge of the nose has a tendency to appear out of focus even when the whiskers which are in the same focal plane of the nose are in sharp focus. That's why I usually prefer to shoot cats' head shots with their heads slightly turned.

 

[Mr Khaw]

your cat looks like its smailing some how..

 

[tomcat]

your cat looks like its smailing some how..

That's because the shape of the cheeks make it look like it is curling its lips up like it is smiling. Many cats have this look.

 

[ageha]

That's because the shape of the cheeks make it look like it is curling its lips up like it is smiling. Many cats have this look.

Maybe it is really smiling?

 

[ManWearPants]

Anyone with both Sigma 50 and 35mm can comment on their IQ similiarities or differences. I already have the Sigma 50. I am aware of the difference in FL but wonders if they produce same creamy bokeh, same LoCA and CA at MFD wide open, same light gathering abilities noting that the front elements of 50 is 77mm while the 35 is 67mm.

 

[tomcat]

Maybe it is really smiling?

As the care giver, I would certainly like to think that they are always smiling at me.

 

[ageha]

Anyone with both Sigma 50 and 35mm can comment on their IQ similiarities or differences. I already have the Sigma 50. I am aware of the difference in FL but wonders if they produce same creamy bokeh, same LoCA and CA at MFD wide open, same light gathering abilities noting that the front elements of 50 is 77mm while the 35 is 67mm.

Oh well, DxOMark will tell you how many T stops both lenses have.