Photography questions

[Rashkae]

Ah, I see. I think I thought your maths were wrong since you went from 300mm to 400mm.

But remember, the "smart teleconverter" only crops the image for you. You might as well switch it off and use the full pic.

 

[Rashkae]

So 300mm on my APS-C is 300mm x 1.5 or just 300mm?

300mm will always be 300mm. You just get an automatic crop that makes it resemble a 450mm lens.

 

[android17]

Erm wait. If I did not use the smart teleconverter, in 35mm format, it should be 1.5x 200 which is 300mm.

But I used the smart teleconverter which is 2x the focal length. So it is 2x 200mm = 400mm. In 35mm format, it is 1.5x 400mm = 600mm.

Yeah.

U overestimated the smart Tele function. In layman terms, smart Tele means digital zoom (aka fake zoom). What it does is simply enlarge the picture then crop off the center part. It does not increase the focal length at all. Basically this is the same as opening a picture in PhotoShop, enlarge it and then cut out the center.

If u wanna "digital zoom" ur pictures, u r better off doing it in PhotoShop rather than using smart Tele. At least in PhotoShop u hv much more control over how u wanna adjust the image's colours, sharpness etc and crop ur photo.

 

[tehzeh]

Ah, I see. I think I thought your maths were wrong since you went from 300mm to 400mm.

But remember, the "smart teleconverter" only crops the image for you. You might as well switch it off and use the full pic.

U overestimated the smart Tele function. In layman terms, smart Tele means digital zoom (aka fake zoom). What it does is simply enlarge the picture then crop off the center part. It does not increase the focal length at all. Basically this is the same as opening a picture in PhotoShop, enlarge it and then cut out the center.

If u wanna "digital zoom" ur pictures, u r better off doing it in PhotoShop rather than using smart Tele. At least in PhotoShop u hv much more control over how u wanna adjust the image's colours, sharpness etc and crop ur photo.

oh so that's what the smart teleconverter does.. Rashkae and android17, thanks for the info.

 

[Chiacj]

You still have it wrong.

If you're using a 200mm focal length lens:

With APS-C size DSLR, say (1.5x crop), your camera is having about 1.5 x 200mm =300mm focal length. Using smart teleconverter of 1.5 x would yield you up to 450mm.

With a FF DSLR, your lens will be 200mm. And using the smart teleconverter of 1.5x would give you up to 300mm.

Follow the maths if you're using 2x smart teleconverter instead of 1.5x in my example above.

Hope this helps.

 

[android17]

You still have it wrong.

If you're using a 200mm focal length lens:

With APS-C size DSLR, say (1.5x crop), your camera is having about 1.5 x 200mm =300mm focal length. Using smart teleconverter of 1.5 x would yield you up to 450mm.

With a FF DSLR, your lens will be 200mm. And using the smart teleconverter of 1.5x would give you up to 300mm.

Follow the maths if you're using 2x smart teleconverter instead of 1.5x in my example above.

Hope this helps.

technically not correct.

A lens' focal length wont change no matter whether u r using FF or APS-C. The difference is you get a narrower view (by cropping out the corners) which looks as if you are using a lens with 1.5x the focal length of the lens u r using.

Thats y its called a crop factor.

Definition of Crop: to cut off the ends or a part of

 

[Rashkae]

You still have it wrong.

If you're using a 200mm focal length lens:

With APS-C size DSLR, say (1.5x crop), your camera is having about 1.5 x 200mm =300mm focal length. Using smart teleconverter of 1.5 x would yield you up to 450mm.

With a FF DSLR, your lens will be 200mm. And using the smart teleconverter of 1.5x would give you up to 300mm.

Follow the maths if you're using 2x smart teleconverter instead of 1.5x in my example above.

Hope this helps.

Yes, that's what he did, but using the 2x convertor, which gave him a cropped equivalent of 600mm.