ManWearPants
Senior Member
Yupz, my friend won photo competitions just by using a PnS. I'm impressed.
Having said that, I am going to get a Lumix L3
50mm F1.2L and 135mm F2L
- Thread starter hokkaido88
- Start date
- Status
Having said that, I am going to get a Lumix L3
Personally, i am not for the bigger f-stops for creamy bokeh, but for larger lens diameter with a reasonable handling weight to allow brighter pics. Ok, before I get flak-ed. Let me explain...
Larger lens size allows more light to come thru, therefore enabling me to take brighter pics in lower light conditions. My home is quite shady and I dun want to switch on lights, slap on a flash to take candid shots of my toddler (without +EV). And I feel that flash may harm the fragile eyes of kids.
I agree that diff pple take diff pics with diff views on the same object. To each with his own.
Do correct me if I am wrong on any of my perceptions so that I may learn from you pros.
Disclaimer: I am a one-month old newbie who inherited my gear from a person that have the same perception.
Larger lens size allows more light to come thru, therefore enabling me to take brighter pics in lower light conditions. My home is quite shady and I dun want to switch on lights, slap on a flash to take candid shots of my toddler (without +EV). And I feel that flash may harm the fragile eyes of kids.
I agree that diff pple take diff pics with diff views on the same object. To each with his own.
Do correct me if I am wrong on any of my perceptions so that I may learn from you pros.
Disclaimer: I am a one-month old newbie who inherited my gear from a person that have the same perception.
Last edited:
flipfreak
Senior Member
thats more or less the reason to get fast lenses. low light photography.
Which is why I will continue to invest in good lenses, namely Ls, becos they are really brighter. So that I can take pics anytime at home without me going "aww f**k, too dark" after i take the pic. Cos candid moments of kids are really fleeting moments that can be once-in-a-lifetime.
To me, that is my focus and hence, my gear (inherited or not). I guess pple will need to look at their purchases on a need basis. And to really differentiate needs and wants.
It's the max aperture value that matters, not the lens dia size..
Of coz.. a lens with larger aperture most probably have larger dia size.. but there may be exception.. for e.g., the sigma 50mm F1.4 has larger front element than the canon EF50mm F1.4, but the max aperture is the same.
Of coz.. a lens with larger aperture most probably have larger dia size.. but there may be exception.. for e.g., the sigma 50mm F1.4 has larger front element than the canon EF50mm F1.4, but the max aperture is the same.
Cartman2000
Senior Member
How would an L f2.8 let in more light than a non-L f2.8?
But will the sigma be able to take brighter pics better in low light than the canon one?
flipfreak
Senior Member
its the same but probably less light fall off?
flipfreak
Senior Member
the amt of light is determined by the aperture. not the lens diameter.
Yupz, my friend won photo competitions just by using a PnS. I'm impressed.
truth be told, I did win a prize at the very 1st Canon marathon using an old run down Canon G1
Oic... point taken.
I guess in that case, it will be for the build quality and the fast AF bah...
Anthony Lee
Senior Member
Now this is confusing. What has aperture opening got to do with lens diameter? Larger aperture opening will let in more light and not the size of the lens.
Shin Howard
Senior Member
Just did a search, saw 'twin towers' and portraits of insects.
Pretty good macro shots.
Sorry, bcos of my newbie perception.
I am beginning to understand more liao. Thanks for the explanation. I learnt quite alot in understanding the technical bits.
Cartman2000
Senior Member
AF speed is reliant on USM motor and weight of glass. 85mm 1.2L focuses slower than 85 1.8, both are USM but the 1.2 has heavy glass
surrephoto
Senior Member
True that AF speed is reliant on USM motor and weight of glass. But the true trade-off is low-light focus ability.
For the 85L II/I...
-About 50%/30% AF speed of 85 f1.8 USM in normal/good lighting conditions.
-Very high accuracy and hit-rate vs 85 f1.8 USM. 85L version 1 supposedly more accurate based on reviews.
-Minimal focus seeking in low to extreme low light condition... conditions where 85 1.8 would die inevitably.
I have owned the 85L I for about 4 days and let me tell you this... I haven't failed to nail a non-moving subject at f1.2.
Actually he is not wrong to say that larger diameter is to let more light into the lens. The purpise of a broader less is to reduce vignetting and other optical improvements. To reduce vignetting, more like is let in via a larger diameter to the corners of the sensor. Can google if want to find out more
If you're referring to the lens diameter, then yes there is some correlation because f/stop is a ratio of focal length to aperture diameter size. For instance a 50mm f/1.2's aperture is
50 / 1.2 = 41.67mm
So the minumum diameter of a lens has to be 41.67mm. That being said, most lenses still have other mechanisms and stuff around the aperture assembly which means a larger still outer diameter.
- Status
Similar threads
