1:1?

[Goondoo]

Hi all,
Just tried taking a close up shot using my D70s, 18-70mm kit lense + a macro filter.

(unedited)

Is this considered 1:1? or more? or less?

Working distance is about 3 inch at 70mm.

Full auto focus and metering, think this quality can consider good macro?

 

[megaweb]

Try to take a shot of a ruler.

 

[tltan]

Does it really matter if its 1:1 for macro? As long as its sharp, nice etc. Doesnt matter. Unless its for recording purpose and you want to know the size of that insect. Otherwise, I think, just enjoy shooting!
:thumbsup:

 

[Goondoo]

Try to take a shot of a ruler.

I will try that tonight. What do I do with it after that? Should I size down the picture?

Does it really matter if its 1:1 for macro? As long as its sharp, nice etc. Doesnt matter. Unless its for recording purpose and you want to know the size of that insect. Otherwise, I think, just enjoy shooting!
:thumbsup:

I am actually recycling a old filter meant for underwater. Just to know if the quality is acceptable, e.g. the bokeh, the colouration etc.
So do you find the picture sharp enough?

 

[Denosha]

For your reference, 1:1 (on 1.6x crop) looks like this:

 

[HiTeck]

For your reference, 1:1 (on 1.6x crop) looks like this:

What is meant by 1.6x crop ?

 

[ExplorerZ]

What is meant by 1.6x crop ?

true 1:1 macro lens actually give 1.6:1 magnification on a 1.6x crop DSLR like canon 350d.

anyway to TS, if that is a typical lighter, i don think it is close to 1:1 yet.

 

[Scaglietti]

true 1:1 macro lens actually give 1.6:1 magnification on a 1.6x crop DSLR like canon 350d.

anyway to TS, if that is a typical lighter, i don think it is close to 1:1 yet.

Errr... 1:1 macro lens will give 1:1 for FF and crop sensor...

BC

 

[ExplorerZ]

Errr... 1:1 macro lens will give 1:1 for FF and crop sensor...

BC

izzit? i tot the 1:1 is for FF, and cropped sensor will increase it due to crop factor? :dunno:

 

[Scaglietti]

izzit? i tot the 1:1 is for FF, and cropped sensor will increase it due to crop factor? :dunno:

Remember that 1:1 refers to image size(on film/sensor):actual size. Basically the projected image size is the same for FF and cropped sensor. The cropped sensor just capture the center cropped image.

A 35mm object will occupy the full width of the FF and a 23.5mm object will occupy the full width of the DX sensor.



BC

 

[blurblock]

izzit? i tot the 1:1 is for FF, and cropped sensor will increase it due to crop factor? :dunno:

No it won't.

For example, if you take a 3cm x 2cm rectangle and you will fill up a 35mm film (or "Full Frame" CCD/Cmos for that matter), it will leave 3cm x 4cm space on a 6x6 film or would not even fill up a APS film (or "APS Sized" digital CCD/CMOS for that matter).

That is 1:1 .... it means 1cm on the subject will be translated to 1cm on film / CCD. Crop factor does not matter at all.

 

[ExplorerZ]

Remember that 1:1 refers to image size(on film/sensor):actual size. Basically the projected image size is the same for FF and cropped sensor. The cropped sensor just capture the center cropped image.

A 35mm object will occupy the full width of the FF and a 23.5mm object will occupy the full width of the DX sensor.



BC

oopz, completely forgotton about that. :embrass: