Ugly Hedgehog® - Photography Forum
Canon SX50 Digital Teleconverter Experiment
If you want to reply, then register here. Registration is free and your account is created instantly, so you can post right away.
Page: <<prev 1 2 3 4 next>>
Jan 12, 2015 13:35:27   #
JimH123
 
SilverthorneRuth wrote:
On my newer Canon SX60, when I go to "Digital Zoom", my only choices are "Standard" and "Off". If I choose "Off", the menu says "turns off digital zoom, but allows optical zoom". Only available on the SX50, then?


Make sureyou are in a mode that allows it. Must be JPEG only. And it may not be a choice in full Auto mode. I think that the rotary dial set to P or the aperture/shutter priority mode or even manual will permit it.

| Reply
Jan 12, 2015 15:45:13   #
Jackinthebox
 
imagemeister wrote:
Here is another non-definitve comparison..........

Bottom line, the Sony CIZ is plenty good for me ! - just dial it in -- no fumbling with a TC, removing lens, loosing light, loosing DOF, buying software, buying a bigger computer, learning the software, using more memory cards, ECT. - well you get the idea !


What does it have to do with the OP's posting?

| Reply
Jan 12, 2015 15:46:52   #
Jackinthebox
 
imagemeister wrote:
Have you done a direct comparison ? - Have seen a direct comparison??........with the Sony CIZ?


What has it got to do with the OP's subject?

| Reply
Jan 12, 2015 16:06:25   #
imagemeister (a regular here)
 
Jackinthebox wrote:
What has it got to do with the OP's subject?


I thought we were talking about ALL digital TC's here - including Sony's - which is probably the best ......

| Reply
Jan 12, 2015 18:28:21   #
Dlevon
 
SilverthorneRuth wrote:
On my newer Canon SX60, when I go to "Digital Zoom", my only choices are "Standard" and "Off". If I choose "Off", the menu says "turns off digital zoom, but allows optical zoom". Only available on the SX50, then?


The converter is a different setting.

| Reply
Jan 12, 2015 19:40:15   #
Stephen.Killian
 
That is why I like the SX50 so much it is a small little camera that just keeps on giving me more surprizes when I keep playing with it, I use it more that my Nikon because I have just one Lens and it is just great for me

| Reply
Jan 12, 2015 20:18:20   #
JimH123
 
SilverthorneRuth wrote:
On my newer Canon SX60, when I go to "Digital Zoom", my only choices are "Standard" and "Off". If I choose "Off", the menu says "turns off digital zoom, but allows optical zoom". Only available on the SX50, then?


I googled it and it does have this feature.

| Reply
Jan 12, 2015 20:34:58   #
JimH123
 
imagemeister wrote:
Have you done a direct comparison ? - Have seen a direct comparison??........with the Sony CIZ?


To do a comparison, it would have to be two similar cameras. I have the Canon SX50 and two Sony DSLRs - the A57 and the A99. It is not a fair contest to compare the SX50 Digital Teleconverter against a real DSLR with either a crop or a full sensor. The can both be set to provide the same equiv. focal length and the results can be compared. By the little SX50 sensor image has to be magnified more time to produce the same image size. In fact the SX50 sensor is only 1/5.6 the size of the full frame. To put that in perspective, to produce a picture 10 in. wide, the full frame only has to be magnified about 7 times whereas the SX50 sensor has to be magnified about 39.5 times. There is absolutely no question the full frame result is going to be better.

So what it would take is a match up of a Sony Bridge of similar Focal length and similar sensor size. And then they can be compared with good targets.

Just to give an example of what I am talking about, recently I posted a picture of a bridge with a sign at the far right side and I heavily cropped the image to see how the lettering on the sign would look. I used the full frame Sony A99 with first a Tamron 24-70 F2.8 zoom with it set to around 50mm and the lettering was very readable. And I repeated with an old Minolta lens and again it was very readable. Since getting the Canon SX50, I returned and made the same shot under the same conditions. And when I cropped to increase the size of the sign, I couldn't even tell it had lettering. I had earlier done the same thing with a Fujifilm HS30EXR and had the same results. At the time, I was thinking the Fujifilm camera sure wasn't that good. But now I see that the SX50 is about exactly the same. And it is because of one thing -- a tiny sensor. And both bridge cameras, when zoomed in on the sign were perfectly clear. But when magnified 5.6 times more than the Full Frame camera to get the sign to the same size, the results were completely unusable.

The conclusion from this is that the tiny sensor camera do produce a nice usable image that looks very nice. But you cannot crop it nearly as much. The image just runs out of resolution too rapidly.

Since I have both types, I need to now decide which camera I need for each type of picture I intend to take.

I added some picture below to show what I was talking about. And I also used a TIFF file for image two and when I had figured out what I had done, decided to leave it there and load a JPEG of the same image. Here is a good example to show how much detail has been thrown away going to JPEG. (The TIFF file looks blurry only due to the compression done by the web site. Hit download to see it without the compression.)
Here is the full size bridge
Here is the full size bridge...
(Download)
And here is the A99 crop of the sign. The small picture used as the thumbnail has had too much detail lost, you will need to download
And here is the A99 crop of the sign.  The small p...
(Download)
And here is the SX50 crop
And here is the SX50 crop...
(Download)
I noticed I used a TIFF file for the 2nd photo. Just to be consistant, here is a JPEG
I noticed I used a TIFF file for the 2nd photo.  J...
(Download)

| Reply
Jan 12, 2015 21:00:31   #
imagemeister (a regular here)
 
JimH123 wrote:
To do a comparison, it would have to be two similar cameras. I have the Canon SX50 and two Sony DSLRs - the A57 and the A99. It is not a fair contest to compare the SX50 Digital Teleconverter against a real DSLR with either a crop or a full sensor. The can both be set to provide the same equiv. focal length and the results can be compared. By the little SX50 sensor image has to be magnified more time to produce the same image size. In fact the SX50 sensor is only 1/5.6 the size of the full frame. To put that in perspective, to produce a picture 10 in. wide, the full frame only has to be magnified about 7 times whereas the SX50 sensor has to be magnified about 39.5 times. There is absolutely no question the full frame result is going to be better.

So what it would take is a match up of a Sony Bridge of similar Focal length and similar sensor size. And then they can be compared with good targets.

Just to give an example of what I am talking about, recently I posted a picture of a bridge with a sign at the far right side and I heavily cropped the image to see how the lettering on the sign would look. I used the full frame Sony A99 with first a Tamron 24-70 F2.8 zoom with it set to around 50mm and the lettering was very readable. And I repeated with an old Minolta lens and again it was very readable. Since getting the Canon SX50, I returned and made the same shot under the same conditions. And when I cropped to increase the size of the sign, I couldn't even tell it had lettering. I had earlier done the same thing with a Fujifilm HS30EXR and had the same results. At the time, I was thinking the Fujifilm camera sure wasn't that good. But now I see that the SX50 is about exactly the same. And it is because of one thing -- a tiny sensor. And both bridge cameras, when zoomed in on the sign were perfectly clear. But when magnified 5.6 times more than the Full Frame camera to get the sign to the same size, the results were completely unusable.

The conclusion from this is that the tiny sensor camera do produce a nice usable image that looks very nice. But you cannot crop it nearly as much. The image just runs out of resolution too rapidly.

Since I have both types, I need to now decide which camera I need for each type of picture I intend to take.

I added some picture below to show what I was talking about. And I also used a TIFF file for image two and when I had figured out what I had done, decided to leave it there and load a JPEG of the same image. Here is a good example to show how much detail has been thrown away going to JPEG. (The TIFF file looks blurry only due to the compression done by the web site. Hit download to see it without the compression.)
To do a comparison, it would have to be two simila... (show quote)


You have lost me - COMPLETELY !

| Reply
Jan 12, 2015 21:08:14   #
Stephen.Killian
 
Good, I was thinking that I was lost and I just was thinking I had a bad day at working and now it is coming home with me also.

| Reply
Jan 12, 2015 21:19:38   #
JimH123
 
imagemeister wrote:
You have lost me - COMPLETELY !


Its not that hard. I took a picture of the bridge where you can see a tiny sign over on the right hand side.

I then blew the sign up real big. Far more crop than one would really want to do and I inspected the sign to see how legible the lettering was. And I did this with a full frame Sony A99 and with the Canon SX50.

What you can see from this is that there is plenty of room for cropping when using the full frame. But with the tiny sensor of the SX50, there isn't much detail deeper than what you see at full size.

The purpose of the experiment was to show that there is a penalty with the tiny sensor. It is a great little camera with lots of magnification, and the pictures if not cropped very heavily will look good. But to get the most detail, a larger sensor (plus good glass) is needed

And the second purpose was to point out why one could not compare Sony's Clear Image Zoom on the A99 to the Digital Teleconverter on the SX50. The playing field is not level. The much larger sensor is going to win all battles.

| Reply
Jan 12, 2015 21:31:09   #
imagemeister (a regular here)
 
I thought we were talking about tele-converter interpolation - for all size sensors ......

| Reply
Jan 12, 2015 22:09:41   #
JimH123
 
imagemeister wrote:
I thought we were talking about tele-converter interpolation - for all size sensors ......


A question had been asked about comparing Sony 's Clear Image Zoom with Canon's Digital Teleconverter, and the point I was making was that it would not be fair fight to compare the larger sensor Sony with the tiny sensor SX50. The larger sensor Sony camera would win all comparisons

| Reply
Jan 12, 2015 22:34:02   #
imagemeister (a regular here)
 
JimH123 wrote:
A question had been asked about comparing Sony 's Clear Image Zoom with Canon's Digital Teleconverter, and the point I was making was that it would not be fair fight to compare the larger sensor Sony with the tiny sensor SX50. The larger sensor Sony camera would win all comparisons


My mistake maybe, ....I guess I will start my own topic !

| Reply
Jan 12, 2015 23:20:04   #
Lazy Old Coot
 
Yes it does. ........ Cot

Jackinthebox wrote:
Can anyone tell me if this works on an SX40hs?

| Reply
Page: <<prev 1 2 3 4 next>>
If you want to reply, then register here. Registration is free and your account is created instantly, so you can post right away.
UglyHedgehog.com - Forum
Copyright 2011-2019 Ugly Hedgehog, Inc.